AgentX Staż wakacyjny Junior Developer (AI / Full-Stack)

🏢 Summary: Senior AI-native full-stack engineer role focused on building and owning production-grade agentic systems end-to-end, from architecture to deployment and on-call. The position involves developing multi-agent workflows, RAG pipelines, and AI infrastructure, as well as delivering client-facing B2B solutions on top of an internal agent platform. Strong ownership, hands-on LLM production experience, and full-stack execution across frontend, backend, and cloud infrastructure are required. 🗂️ Requirements: 5+ years of production software engineering experience, 1-2+ years building and operating LLM systems in production, Experience deploying agentic systems with real users, Strong full-stack development experience, Hands-on experience with LLM APIs, RAG, prompt engineering, Experience with at least one agentic framework or custom orchestration, Ability to design, ship, and maintain systems end-to-end, Experience with cloud infrastructure and production deployments, Strong written English 📃 Skills: TypeScript, React, Node.js, Python, PostgreSQL, AWS, Anthropic, OpenAI, LangGraph, CrewAI, RAG, LLM, APIs, SQL, VectorDB 🏢 Description: Who we are AgentX is a platform for building and running production AI agents — and a team that ships real systems on top of it for clients who need more than a demo. The platform is the infrastructure: orchestration, memory, tools, evals, deployment — the layer that makes agentic systems actually work in production, not just in a notebook. On top of it, we build end-to-end solutions for our clients. One of the systems running on AgentX today is KsięgoBoty — a multi-agent product used daily by hundreds of Polish accounting firms. Paying customers, production load, real consequences when something breaks. We've also done to ourselves what we build for others: restructured how we work around AI tools, agent-first architectures, and a delivery model that doesn't need a Jira layer between thinking and shipping. This isn't theory — it's how we operate every day. Who we're looking for A senior engineer who owns outcomes, not tasks. This isn't a role for someone who's shipped "an LLM demo at a hackathon." We need someone who has already put agentic systems into production — with real users, real edge cases, real 2am Slack messages when something goes sideways. If you need a PM to translate the problem, a Jira board with three rounds of grooming, and acceptance criteria to tell you what "done" means — this isn't for you, and that's fine. If instead you read a Slack message like "accountants are losing 2 hours a day reconciling this" and your brain immediately jumps to "okay, what does the user actually need, what's the simplest thing that works, and how do we ship it" — keep reading. You'll own problems end-to-end. Frontend, backend, the agent layer, the deploy, the follow-up when a customer hits something weird. You decide what to build, you build it, you ship it, you watch what happens. And you get that this actually matters. On the other end of every feature there's an accountant closing books at 9pm, a firm owner trying to keep their business running. It's not just code. What "AI-native" actually means here Not "I've used ChatGPT." We mean: Claude Code / Cursor / Codex is your IDE , not a plugin you switch on when you feel like it. You know when "accept all" is safe and when it absolutely isn't. You have strong opinions on agent orchestration — when to reach for LangGraph/CrewAI/Agno vs. when to write 50 lines of plain Python that work better. You understand production reality of LLM systems — guardrails, evals, observability, retry logic, cost control, what to do when a model is non-deterministic in a way that breaks your contract with the user. You can tell when a model is the wrong tool and reach for code instead. For you, AI is a tool — not the point. What you'll actually own Agentic systems in production — multi-step workflows, RAG pipelines, agent orchestration. From architecture decision to deployment to the 3am on-call when something drifts. The AgentX platform itself — the primitives, the orchestration layer, the evals, the deployment story. You're building the thing that makes every client engagement faster and more reliable than the last. Full-stack client solutions on top of AgentX — TypeScript/React on the frontend, Python on the backend, integrated with LLM providers (Anthropic, OpenAI, others as they come). Infrastructure that holds up — Postgres, AWS, vector stores, ingestion pipelines, the unsexy layer that makes everything else possible. Quality standards for AI systems — you help us define what "good" looks like. Evals, guardrails, failure modes. Because "mostly right but wrong in scary ways" is not a feature. Our stack TypeScript, React, Node.js, Python, PostgreSQL, AWS, Anthropic + OpenAI APIs, agentic frameworks. You don't need every box ticked — you need to be the kind of specialist who picks up unfamiliar pieces quickly and confidently. What we expect (must-haves) 5+ years shipping production software , at least 1-2 of them with real LLM systems in production — not side projects, not demos Strong full-stack background — you're comfortable owning from frontend to infra, even if your center of gravity is one side AI-native coding workflow — Claude Code, Cursor, Codex, whatever — as your daily driver Hands-on with LLM APIs, RAG, prompt engineering, and at least one agentic framework (or you've built your own orchestration and have opinions on why) Strong written English — you'll communicate with clients, partners, and async teammates Ability to run a project from discovery to delivery with minimal supervision — we'll align on outcomes, you'll figure out how Nice-to-have Experience building B2B SaaS for non-technical users (SMBs, professional services) Voice agents, real-time systems (LiveKit or similar) Accounting / fintech / regulated domain exposure How we work Fast pace, but Monday to Friday. Weekends are yours. We don't do crunch, we don't do fake urgency, we don't do meetings that could've been a message. We'd rather ship steadily for years than sprint for six months and lose you. Direct line to the founder. Direct line to clients. No process layer between you and the work. Small team, real decisions, real ownership. The honest pitch Real ownership of real product areas — not a seat on a feature factory Frontier work — you're building both the platform that makes production agents work and the client systems running on top of it Compensation that reflects seniority — 14 000 – 25 000 PLN netto + VAT (B2B), with room above for someone exceptional Fully paid AI stack — Claude Max, Cursor, whatever you need to work at full speed Remote-first , flexible hours, Poland-based No filler meetings, no Jira bloat — we measure shipped systems in production, not hours logged Push back on the founder when he's wrong. He will be, regularly. How the process works 1. You send us stuff recruitment@agentx.so Your CV — yes, we read them One thing you built end-to-end you're proud of — and what you'd change about it today One AI product (yours or someone else's) you think is genuinely good, and why Your take: a client says our agent is "mostly right but wrong in ways that scare them." What do you do first? 2. We reply within 2-3 days — either "let's talk" or "not this time, here's why." No black hole. 3. We meet — 30-45 min call with the founder. We talk about your work, you ask us hard questions. If the chemistry isn't there, no hard feelings. 4. Problem-solving session (top 2-3 candidates) — we give you a real problem we're working on. You come back with how you'd approach it: your thinking, your trade-offs, your questions. We're not watching over your shoulder. We want to see how you think. 5. Decision within 2-3 days. If yes — you start when you're ready. Tomorrow, next week, after notice period. Your call.

🏢 Summary: Senior Software Engineer role focused on designing and delivering scalable, distributed payment platform solutions in a cloud-native environment. The position combines hands-on backend development in .NET with technical leadership, architectural ownership, and mentoring responsibilities. A key aspect of the role is introducing and leading agent-based (AI-driven) engineering workflows across the SDLC. 🗂️ Requirements: 5+ years of software engineering experience (Back-End or Full-Stack), Experience with .NET and C#, Experience with cloud platforms (Azure, AWS, or GCP), Experience with Docker and .NET 6+, Experience building scalable, low-latency, event-driven distributed systems, Experience designing and integrating RESTful and gRPC APIs, Experience with microservices and cloud-native architectures, Experience with SQL databases, Experience in payments or financial systems, Hands-on experience with agentic development tools (e.g., Claude Code, Copilot Workspace), Ability to evaluate and validate AI-generated code, Experience working in Agile Scrum environments 📃 Skills: C#, .NET, SQL, SQLServer, Azure, AWS, GCP, Docker, REST, gRPC, Microservices, Cloud, Terraform, Postgres, VueJS, React, Jira, Confluence, Claude, Copilot 🏢 Description: Overview Permanent, full-time, hybrid Connecting clients to markets – and talent to opportunity. With 4,300 employees and over 400,000 retail and institutional clients from more than 80 offices spread across five continents, we’re a Fortune-100, Nasdaq-listed provider, connecting clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors. Whether you want to forge a career connecting our retail clients to potential trading opportunities, or ingrain yourself in the world of institutional investing, The StoneX Group is made up of four segments that offer endless potential for progression and growth. Business Segment Overview: A Swift-accredited service bureau and member, our Payments division provides NGOs, institutions and non-profits the ability to make a local difference, globally – with transparent pricing across 180+ countries and 140+ currencies. Technology Ecosystem: Back End: C#, .NET Database: SQL Server Cloud: Azure Responsibilities Position Purpose: StoneX Payments is looking for a Senior Software Engineer to design, develop and implement software applications that make up key components of our platforms. You will deliver high-quality software that is aligned with customer needs and business goals. You will be expected to set standards in a highly modernize and distributed environment. You will be responsible for the technical excellence and approach taken by less experienced team members, including providing guidance and oversight, planning and estimation, analyzing software performance and configuration systems, peer code reviews and documentation, and the deployment and integration of new software from technology standards you set. You will collaborate with product owners in an agile scrum to scope, develop and deploy solutions, continuously iterating to ensure that new features are adding value to our customers. You are expected to conduct design and code reviews within the engineering team and vetting designs across your teams with business initiatives. You are expected to get into the details of our solutions, lead implementation, and take ownership of the team’s output. Come help us develop the next-generation payments platform! The ideal candidate is passionate about growing their skills and building complex distributed systems. Primary duties will include: Execute on the software development life cycle (SDLC) for the team including estimating, analysis, code design, development, testing, debugging, and maintenance. Implement engineering standards, best practices, and quality assurance procedures. Work closely with product owners to understand product requirements and translate them into technical stories. Provide technical expertise and insight to analyze complex requirements and break down features and initiatives into tasks. Take responsibility for the quality of the applications as well as its alignment with technology and product goals. Review and give constructive feedback on code. Identify recurring issues and opportunities to improve engineering process and coding standards. Lead the execution of software solutions along with monitoring and supporting tools to ensure the software works well in the operating environment. Actively participate in strategic implementation regarding technology solutions and platform architecture Mentor and grow less experienced engineers. Forward thinking on modern technology and the payments industry. Agentic Development Leadership: This is the major differentiator of the role. Introduce, design, and operationalize agent-based engineering workflows across the SDLC. Use tools such as Claude Code, capable of repository-wide reasoning, automated refactoring, debugging, and commit generation to accelerate engineering throughput. Build “agent-ready” codebases through modular design, clean documentation, and comprehensive test coverage — key enablers of successful agentic development. Actively contribute to and/or lead the new agentic development team for Payments (e.g., new wallet solution POC). Evaluate AI-generated code for quality, correctness, architectural alignment, and security. Develop internal best practices, training materials, and standards for agent-accelerated engineering. Qualifications To land this role you will need : 5+ years software engineering experience, primarily Back-End or Full-Stack. Experience with .NET and Cloud platforms (Azure/AWS/GCP). Experience working with Docker, .NET 6+, C#. Experience designing and writing robust software for highly scalable, low-latency, event driven, distributed platforms. Strong experience with object-oriented programming and design, including C# or any other programming languages. Experience designing, implementing, and integrating with RESTful and gRPC APIs. Experience with modern architectures and practices including microservices, cloud computing, micro frontends, and domain driven design. Experience with financial products, specifically payments. Experience with Jira and Confluence. Able to work in a positive team culture with a strong sense of accountability and collaboration. Able to balance incoming requirements with a focus on tactical execution. Excellent coding skillset and peer code review. Excellent verbal and written communication skills. Excellent analytical and problem-solving skills. Excellent skills working in a distributed Lean Agile Scrum Team. Deep understanding of modern cloud native technology with microservice/microsite design patterns. What makes you stand out: Experience in SaaS, Payments, FinTech, or E:commerce. Experience with IaC, specifically Terraform. Experience with microservice design pattern, specifically Twelve-Factor. Experience with document databases. Experience working with VueJs/React, and Postgres. Agentic Development Skills: (What makes this role unique) Hands-on experience with agentic development tools such as Claude Code, Copilot Workspace, or equivalent. Ability to orchestrate multi-agent workflows (refactoring, debugging, dependency updates, code generation). Deep understanding of how design quality affects agent output (modularity, documentation, test coverage). Experience evaluating and validating AI-generated code. Ability to build frameworks, patterns, and tooling for agent-powered engineering at scale. Working environment: FTE (UoP). Hybrid at ul. Mogilska 35 – we have private parking for employees.

🏢 Summary: Mid-level React/TypeScript Engineer role focused on building and owning production-grade frontend applications (dashboards, operator panels, customer apps) on top of AI agent systems. The position involves close collaboration with backend services and active use of AI coding tools while maintaining strong engineering judgment and code quality. You will take full ownership of features from design to deployment in a production environment with real users. 🗂️ Requirements: 3–5 years commercial experience in frontend development, Strong proficiency in TypeScript, Deep understanding of React and rendering lifecycle, Experience building scalable frontend architectures, Experience integrating with REST APIs and authentication systems, Ability to work with backend technologies (Node.js or Python), Experience with state management and data synchronization, Proficiency with Next.js, Experience working with MongoDB, Experience deploying or working with AWS, Ability to use AI coding tools critically and effectively 📃 Skills: TypeScript, React, Next.js, Tailwind, Node.js, Python, MongoDB, AWS, REST, Claude, Cursor, MCP 🏢 Description: Who we are AgentX is a platform for building and running production AI agents - and a team that ships real systems on top of it for clients who need more than a demo. The platform is the infrastructure: orchestration, memory, tools, evals, deployment - the layer that makes agentic systems actually work in production. On top of it, we build end-to-end solutions for our clients. One of the systems running on AgentX today is KsięgoBoty - a multi-agent product used daily by hundreds of Polish accounting firms. Paying customers, production load, real consequences when something breaks. We're small, technical, AI-heavy, and we ship. Who we're looking for A solid React engineer who actually understands what's happening under the hood, and uses AI tools daily without outsourcing their brain to them. You'll join the team that owns the user-facing layer of our products: the dashboards, the operator panels, the customer-facing apps that sit on top of the agents. We need someone we can trust to take a feature, build it well, and ship it without it coming back broken three days later. This isn't a flashy role and we're not looking for a flashy person. We need craftsmanship. If you read a ticket and your first instinct is "what's the data model, what's the component structure, where does state actually live" - keep reading. If your first instinct is "I'll just vibe-code it with Cursor and hope the PR passes" - this isn't for you, and that's fine. What we mean by "good React engineer" You write TypeScript well: types help you, they don't slow you down You understand React deeply enough to debug a re-render problem without guessing You can structure a non-trivial frontend so it doesn't turn into a tangle in six months You've worked with a real backend: REST, auth, data sync, edge cases — and you can hold both ends of a feature in your head You read other people's code carefully and review like an adult: kindly, but honestly You are comfortable using AI tools daily, but you do not outsource your judgment to them You know how to check AI-generated code instead of trusting it because it “looks right” ~3–5 years of commercial experience is roughly where we expect this person to sit. Less is fine if you're sharp; more is fine if you actually want a Mid role. How we work with AI We use AI heavily. Claude Code, Codex, Cursor, MCP, agent workflows: they're a normal part of how we work, the same way Git or Docker is. You'll be expected to use them the same way: not as a gimmick, not as a shortcut around understanding the codebase, but as leverage. That means: break work into clear chunks, guide the tools through implementation, review their output critically, fix what's wrong, and own the final result. You should be faster with these tools than without them - and you should know exactly where they're about to lie to you. AI doesn't turn a bad engineer into a good one. It just makes them ship faster, which is worse. So: We do not want people who only know how to prompt. We also do not want people who proudly refuse to use AI and treat it like autocomplete with better marketing. The right person sits in the middle: strong fundamentals, strong taste, strong ownership - multiplied by modern AI tooling. What you'll actually own Frontend, day-to-day. React, TypeScript, Tailwind, Next.js. Real product surfaces - operator dashboards, customer panels, internal tools that real people use to do real work. Fullstack when needed. You won't live exclusively in the frontend. Node/Python on the backend when a feature needs it - you don't have to be an expert, but you have to be willing. Quality. The thing you ship works, doesn't break the next thing, and doesn't make the codebase worse. We notice this. Working with the team. Code reviews, architecture decisions - we figure out the harder calls together. You're not coding in a vacuum. The stack TypeScript / React / Next.js · Tailwind · Node.js · Python (some) · MongoDB · AWS · Claude / Cursor / MCP for tooling. We don't use Go. Nice-to-have (not required) You've built a side project that you actually shipped, not just started You've worked with LLM APIs in production (not "I made a chatbot in a tutorial") You care about UX - not as a designer, but as someone who notices when something feels wrong What we offer 13 000 – 18 000 PLN netto + VAT, B2B Remote-friendly, Poland-based A small team that ships and doesn't waste your time Direct work with the founders - no Jira theater, no three-round groomings, no PM filtering your ideas Modern AI tooling fully paid for (Claude Max, Cursor, Codex, whatever helps you work better) Real ownership of the frontend layer of a product people use every day How the process works 1. You send us stuff recruitment@agentx.so Your CV — yes, we read them One thing you built end-to-end you're proud of — and what you'd change about it today One AI product (yours or someone else's) you think is genuinely good, and why Your take: a client says our agent is "mostly right but wrong in ways that scare them." What do you do first? 2. We reply within 2-3 days — either "let's talk" or "not this time, here's why." No black hole. 3. We meet — 30-45 min call with the founder. We talk about your work, you ask us hard questions. If the chemistry isn't there, no hard feelings. 4. Problem-solving session (top 2-3 candidates) — we give you a real problem we're working on. You come back with how you'd approach it: your thinking, your trade-offs, your questions. We're not watching over your shoulder. We want to see how you think. 5. Decision within 2-3 days. If yes — you start when you're ready. Tomorrow, next week, after notice period. Your call.

🏢 Summary: Lead Full Stack Engineer role responsible for leading development of a mission-critical trading and payments platform while managing a small agile team. Combines hands-on full stack engineering with technical leadership, architecture ownership, and delivery accountability. Strong focus on .NET, React, Azure, and implementing agent-based engineering workflows across the SDLC. 🗂️ Requirements: Proven experience as Senior or Lead Full Stack Engineer, Experience leading small engineering teams, Strong proficiency in C# and .NET, Experience building RESTful APIs, Hands-on experience with React and TypeScript, Experience with Azure cloud services, Experience with Kubernetes and cloud-native architecture, Knowledge of microservices and event-driven architecture, Experience with CI/CD pipelines and automated testing, Experience working in Agile Scrum teams, Hands-on experience with agentic development tools, Ability to evaluate and validate AI-generated code, Bachelor’s degree in Computer Science, Engineering or related field 📃 Skills: C#, .NET, ASP.NET, React, TypeScript, JavaScript, HTML5, CSS, SASS, Azure, Kubernetes, Docker, Rancher, MongoDB, SQL, PostgreSQL, Kafka, AMQP, CQRS, Git, CI/CD, AzureDevOps, GitHub, Copilot, Claude, Microservices 🏢 Description: Overview Permanent, full-time, hybrid Connecting clients to markets – and talent to opportunity. With 4,300 employees and over 400,000 retail and institutional clients from more than 80 offices spread across five continents, we’re a Fortune-100, Nasdaq-listed provider, connecting clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors. Whether you want to forge a career connecting our retail clients to potential trading opportunities, or ingrain yourself in the world of institutional investing, The StoneX Group is made up of four segments that offer endless potential for progression and growth. Business Segment Overview: A Swift-accredited service bureau and member, our Payments division provides NGOs, institutions and non-profits the ability to make a local difference, globally – with transparent pricing across 180+ countries and 140+ currencies. Technology Ecosystem: Languages & Frameworks: Back End: C#, .NET 9, ASP.NET Front End: React, TypeScript/JavaScript (ES6+), HTML5, and CSS/SASS. Architecture: Microservices, Event-driven (Kafka, AMQP), CQRS Cloud & Infra: Azure, Kubernetes, Docker, Rancher Databases: MongoDB, MS SQL Server, PostgreSQL Tooling: Git, Visual Studio, VS Code, Rider, Copilot, CI/CD pipelines (Azure DevOps, GitHub) Responsibilities Position Purpose: We are seeking a Lead Full Stack Engineer to head the development of Connect, a mission-critical platform enabling trading, pricing, and more for our clients. This role combines hands-on engineering excellence with team leadership, making it ideal for someone who thrives in a high-impact environment, enjoys full stack development, and is motivated to grow people as well as products. As Lead, you will manage a small, agile team of around five engineers, while also contributing directly to the technical direction and codebase. You will be accountable for engineering quality, delivery predictability, and team growth, ensuring that the team operates effectively and efficiently. This is a career-defining opportunity for an experienced full stack engineer with strong .NET, React, and Azure expertise to step into a leadership role with direct people management. Primary duties will include: Lead and manage a cross-functional scrum team of ~5 engineers, fostering a culture of collaboration accountability, and continuous improvement. Guide software design and architecture decisions to ensure scalable, robust, and maintainable solutions. Own the refinement process - break down complex features into clear, actionable development tasks. Contribute production-ready code while setting high standards in testing, CI/CD, and documentation. Act as a technical mentor, supporting professional growth and upskilling within the team. Drive delivery predictability and ensure commitments are met, partnering closely with Product and QA engineers. Communicate progress, risks, and technical decisions clearly to engineering leadership and stakeholders. Stay ahead of emerging technologies, especially within .NET, React, and Azure ecosystems, and recommend improvements to tools and practices. Agentic Development Leadership: This is the major differentiator of the role. Introduce, design, and operationalize agent-based engineering workflows across the SDLC. Use tools such as Claude Code, capable of repository-wide reasoning, automated refactoring, debugging, and commit generation to accelerate engineering throughput. Build “agent-ready” codebases through modular design, clean documentation, and comprehensive test coverage — key enablers of successful agentic development. Actively contribute to and/or lead the new agentic development team for Payments (e.g., new wallet solution POC). Evaluate AI-generated code for quality, correctness, architectural alignment, and security. Develop internal best practices, training materials, and standards for agent-accelerated engineering. Qualifications To land this role you will need : Proven experience as a Senior or Lead Full Stack Engineer, with demonstrated success leading small teams. Strong proficiency in C#/.NET for backend development, including building and maintaining RESTful APIs. Hands-on expertise with React and modern frontend practices (TypeScript, component-driven design, state management). Experience with Azure cloud services (App Services, Functions, Kubernetes, etc.) and cloud-native architecture. Deep understanding of system architecture, scalable design patterns, and performance optimization across the stack. Ability to facilitate refinement sessions and translate product requirements into technically sound, manageable work. Strong grounding in CI/CD pipelines, automated testing, and DevOps principles. Excellent communicator, able to inspire and guide technical teams while also engaging effectively with non-technical stakeholders. Comfortable working in Agile environments with cross-functional teams. Agentic Development Skills: (What makes this role unique) Hands-on experience with agentic development tools such as Claude Code, Copilot Workspace, or equivalent. Ability to orchestrate multi-agent workflows (refactoring, debugging, dependency updates, code generation). Deep understanding of how design quality affects agent output (modularity, documentation, test coverage). Experience evaluating and validating AI-generated code. Ability to build frameworks, patterns, and tooling for agent-powered engineering at scale. Education / Certification Requirements: Bachelor’s degree or higher in Engineering (Computer Systems, Software, IT&T, Systems) or relevant experience. Working environment: FTE (UoP). Hybrid at ul. Mogilska 35 – we have private parking for employees.

🏢 Summary: Permanent hybrid role for a Lead Full Stack Engineer to lead development of a mission-critical trading and payments platform, combining hands-on coding with team leadership. The position focuses on building scalable microservices-based solutions using .NET, React, and Azure while introducing agent-based engineering workflows across the SDLC. The role includes ownership of architecture, delivery quality, and implementation of AI-powered development practices. 🗂️ Requirements: Proven experience as Senior or Lead Full Stack Engineer, Experience leading and managing small engineering teams, Strong proficiency in C# and .NET, Experience building RESTful APIs, Hands-on experience with React and TypeScript, Experience with Azure cloud services, Knowledge of microservices and cloud-native architecture, Experience with CI/CD pipelines and automated testing, Experience working in Agile/Scrum environments, Hands-on experience with agentic development tools, Ability to evaluate and validate AI-generated code, Bachelor’s degree in Engineering or relevant experience 📃 Skills: C#, .NET, ASP.NET, React, TypeScript, JavaScript, HTML5, CSS, SASS, Azure, Kubernetes, Docker, Rancher, Kafka, AMQP, CQRS, MongoDB, SQL, PostgreSQL, Git, CI/CD, AzureDevOps, GitHub, Claude, Copilot 🏢 Description: Overview Permanent, full-time, hybrid Connecting clients to markets – and talent to opportunity. With 4,300 employees and over 400,000 retail and institutional clients from more than 80 offices spread across five continents, we’re a Fortune-100, Nasdaq-listed provider, connecting clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors. Whether you want to forge a career connecting our retail clients to potential trading opportunities, or ingrain yourself in the world of institutional investing, The StoneX Group is made up of four segments that offer endless potential for progression and growth. Business Segment Overview: A Swift-accredited service bureau and member, our Payments division provides NGOs, institutions and non-profits the ability to make a local difference, globally – with transparent pricing across 180+ countries and 140+ currencies. Technology Ecosystem: Languages & Frameworks: Back End: C#, .NET 9, ASP.NET Front End: React, TypeScript/JavaScript (ES6+), HTML5, and CSS/SASS. Architecture: Microservices, Event-driven (Kafka, AMQP), CQRS Cloud & Infra: Azure, Kubernetes, Docker, Rancher Databases: MongoDB, MS SQL Server, PostgreSQL Tooling: Git, Visual Studio, VS Code, Rider, Copilot, CI/CD pipelines (Azure DevOps, GitHub) Responsibilities Position Purpose: We are seeking a Lead Full Stack Engineer to head the development of Connect, a mission-critical platform enabling trading, pricing, and more for our clients. This role combines hands-on engineering excellence with team leadership, making it ideal for someone who thrives in a high-impact environment, enjoys full stack development, and is motivated to grow people as well as products. As Lead, you will manage a small, agile team of around five engineers, while also contributing directly to the technical direction and codebase. You will be accountable for engineering quality, delivery predictability, and team growth, ensuring that the team operates effectively and efficiently. This is a career-defining opportunity for an experienced full stack engineer with strong .NET, React, and Azure expertise to step into a leadership role with direct people management. Primary duties will include: Lead and manage a cross-functional scrum team of ~5 engineers, fostering a culture of collaboration accountability, and continuous improvement. Guide software design and architecture decisions to ensure scalable, robust, and maintainable solutions. Own the refinement process - break down complex features into clear, actionable development tasks. Contribute production-ready code while setting high standards in testing, CI/CD, and documentation. Act as a technical mentor, supporting professional growth and upskilling within the team. Drive delivery predictability and ensure commitments are met, partnering closely with Product and QA engineers. Communicate progress, risks, and technical decisions clearly to engineering leadership and stakeholders. Stay ahead of emerging technologies, especially within .NET, React, and Azure ecosystems, and recommend improvements to tools and practices. Agentic Development Leadership: This is the major differentiator of the role. Introduce, design, and operationalize agent-based engineering workflows across the SDLC. Use tools such as Claude Code, capable of repository-wide reasoning, automated refactoring, debugging, and commit generation to accelerate engineering throughput. Build “agent-ready” codebases through modular design, clean documentation, and comprehensive test coverage — key enablers of successful agentic development. Actively contribute to and/or lead the new agentic development team for Payments (e.g., new wallet solution POC). Evaluate AI-generated code for quality, correctness, architectural alignment, and security. Develop internal best practices, training materials, and standards for agent-accelerated engineering. Qualifications To land this role you will need : Proven experience as a Senior or Lead Full Stack Engineer, with demonstrated success leading small teams. Strong proficiency in C#/.NET for backend development, including building and maintaining RESTful APIs. Hands-on expertise with React and modern frontend practices (TypeScript, component-driven design, state management). Experience with Azure cloud services (App Services, Functions, Kubernetes, etc.) and cloud-native architecture. Deep understanding of system architecture, scalable design patterns, and performance optimization across the stack. Ability to facilitate refinement sessions and translate product requirements into technically sound, manageable work. Strong grounding in CI/CD pipelines, automated testing, and DevOps principles. Excellent communicator, able to inspire and guide technical teams while also engaging effectively with non-technical stakeholders. Comfortable working in Agile environments with cross-functional teams. Agentic Development Skills: (What makes this role unique) Hands-on experience with agentic development tools such as Claude Code, Copilot Workspace, or equivalent. Ability to orchestrate multi-agent workflows (refactoring, debugging, dependency updates, code generation). Deep understanding of how design quality affects agent output (modularity, documentation, test coverage). Experience evaluating and validating AI-generated code. Ability to build frameworks, patterns, and tooling for agent-powered engineering at scale. Education / Certification Requirements: Bachelor’s degree or higher in Engineering (Computer Systems, Software, IT&T, Systems) or relevant experience. Working environment: FTE (UoP). Hybrid at ul. Mogilska 35 – we have private parking for employees.

🏢 Summary: Permanent hybrid role for a Mid Fullstack Engineer responsible for designing, building, and enhancing scalable, business-critical applications across C#/.NET backend and React frontend. The position involves end-to-end feature ownership, AI-assisted development, and collaboration within Agile teams to deliver high-quality, cloud-oriented solutions. The engineer contributes to architecture, testing, CI/CD, and continuous improvement across the stack. 🗂️ Requirements: 3–6 years professional software engineering experience, Strong knowledge of C# and .NET, Experience with ASP.NET Core and Web APIs, Experience with React and TypeScript, Experience designing and consuming RESTful APIs, Experience with relational databases and data modeling, Knowledge of clean code principles and automated testing, Experience with Git and CI/CD pipelines, Hands-on use of AI-assisted coding tools, Ability to review and validate AI-generated code 📃 Skills: C#, .NET, ASP.NET, React, TypeScript, REST, SQL, SQLServer, Git, CI/CD, Azure, Docker, Microservices, Claude, Copilot 🏢 Description: Overview Permanent, full-time, hybrid Connecting clients to markets – and talent to opportunity. With 5,400+ employees and over 80,000 institutional, commercial, and payments clients, we operate from more than 80 offices spread across six continents. As a Fortune 100, Nasdaq-listed provider, we connect clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors. Whether you want to forge a career connecting our retail clients to potential trading opportunities, or ingrain yourself in the world of institutional investing, StoneX Group is made up of four business segments that offer endless potential for progression and growth. Business Segment Overview: A Swift-accredited service bureau and member, our Payments division provides NGOs, institutions and non-profits the ability to make a local difference, globally – with transparent pricing across 180+ countries and 140+ currencies. Responsibilities Position Purpose: We are seeking a Mid Fullstack Engineer to design, build, and enhance scalable, business-critical applications across backend and frontend layers. This role is ideal for an engineer who: Works confidently across C#/.NET backend and React frontend Owns features end-to-end with minimal supervision Raises quality and engineering discipline within their squad Effectively leverages AI-assisted development tools to improve productivity and maintainability As a Mid Fullstack Engineer, you are a strong, autonomous contributor and an emerging technical leader within your team. You combine solid fullstack expertise with disciplined engineering practices and pragmatic adoption of agentic development workflows. Key Responsibilities will include: 1. Fullstack Development & Feature Ownership Contribute across the full software development lifecycle — from refinement and technical design through implementation, testing, deployment, and production support. Build and maintain backend services using C# and .NET ( ASP.NET Core, Web APIs). Develop modern frontend components using React and TypeScript. Design and consume RESTful APIs, ensuring clear and stable contracts between frontend and backend. Work with databases and data models to ensure performance, integrity, and reliability. Own medium-sized features end-to-end across the stack. Write clean, modular, and testable code with appropriate unit and integration tests. Participate actively in code reviews and architectural discussions. You are expected to deliver independently while contributing to continuous improvement of the overall system. 2. Agentic Development Application (Squad-Level Optimization) Agent-augmented engineering is an expected capability at this level. Actively use AI-assisted development tools (e.g., Claude Code, GitHub Copilot, or equivalent) to: Accelerate feature implementation across backend and frontend Generate and improve unit/integration tests Refactor components and services Assist in debugging and issue investigation Improve documentation and code clarity Critically evaluate and validate AI-generated code before committing it to production. Ensure AI-assisted output aligns with: Established architectural patterns Security and compliance standards Maintainability expectations Contribute to making the codebase more “agent-ready” by: Improving modularity and separation of concerns Strengthening TypeScript typing and API contracts Increasing automated test coverage Reducing unnecessary coupling Share effective AI-assisted development practices with teammates. You are an advanced practitioner of agentic tools who improves how your squad leverages them safely and effectively. 3. Delivery & Collaboration Collaborate closely with Product, QA, DevOps, and senior engineers to deliver high-quality features. Participate in story refinement, estimation, and technical breakdown. Identify and surface technical risks early. Support production systems through debugging and root cause analysis. Contribute to CI/CD pipelines and ensure reliable deployments. You help strengthen delivery predictability and engineering quality within your team. 4. Technical Growth & Influence Demonstrate strong ownership and accountability across frontend and backend components. Provide thoughtful, constructive code reviews that improve quality. Mentor junior engineers informally where appropriate. Continuously improve your fullstack expertise and understanding of cloud-native patterns. Stay current with evolving .NET, React, Azure, and AI-assisted development practices. You are progressing toward broader architectural influence and cross-team impact (Senior trajectory). Qualifications To land this role you will need: Fullstack Engineering 3–6 years of professional software engineering experience with meaningful fullstack exposure. Strong working knowledge of C# and .NET ( ASP.NET Core, Web APIs). Solid experience building frontend applications with React and TypeScript. Experience designing and consuming RESTful services. Familiarity with relational databases (e.g., SQL Server) and basic data modeling. Understanding of clean code principles, maintainable design, and automated testing. Experience using Git, CI/CD pipelines, and modern development workflows. Agentic Development Capabilities Hands-on experience using AI-assisted coding tools (e.g., GitHub Copilot, Claude Code, or equivalent). Ability to evaluate AI-generated backend and frontend code critically. Understanding of how modular design, strong typing, documentation, and test coverage improve AI tool effectiveness. Pragmatic mindset — using AI to accelerate delivery without compromising quality or security. Collaboration & Mindset Strong team collaboration and communication skills. Ability to take feedback constructively and improve continuously. Growth mindset with ambition to expand technical ownership and cross-stack expertise. Comfortable working in Agile, cross-functional environments. Nice to Have Exposure to Azure or other cloud platforms. Experience with Docker, microservices, or distributed systems. Familiarity with CI/CD pipelines and automated testing frameworks. Experience contributing to shared component libraries or frontend standards. Interest or exposure to financial services, payments, or trading platforms. Working environment: Hybrid 4-days in office with private parking for employees.

🏢 Summary: Permanent, full-time hybrid role for a Mid Fullstack Engineer responsible for designing, building, and enhancing scalable, business-critical applications across C#/.NET backend and React frontend. The position involves end-to-end feature ownership, REST API development, database work, CI/CD contribution, and AI-assisted development practices. The engineer collaborates in Agile squads to deliver high-quality, cloud-oriented solutions with strong engineering standards. 🗂️ Requirements: 3–6 years professional software engineering experience, Strong knowledge of C# and .NET, Experience with ASP.NET Core and Web APIs, Experience with React and TypeScript, Experience designing and consuming RESTful APIs, Experience with relational databases and data modeling, Knowledge of clean code and maintainable design principles, Experience with automated testing (unit and integration), Experience with Git and CI/CD pipelines, Hands-on use of AI-assisted coding tools, Ability to review and validate AI-generated code, Experience working in Agile environments 📃 Skills: C#, .NET, ASP.NET, React, TypeScript, REST, SQL, SQLServer, Git, CI/CD, Azure, Docker, Microservices, AI, Copilot, Claude 🏢 Description: Overview Permanent, full-time, hybrid Connecting clients to markets – and talent to opportunity. With 5,400+ employees and over 80,000 institutional, commercial, and payments clients, we operate from more than 80 offices spread across six continents. As a Fortune 100, Nasdaq-listed provider, we connect clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors. Whether you want to forge a career connecting our retail clients to potential trading opportunities, or ingrain yourself in the world of institutional investing, StoneX Group is made up of four business segments that offer endless potential for progression and growth. Business Segment Overview: A Swift-accredited service bureau and member, our Payments division provides NGOs, institutions and non-profits the ability to make a local difference, globally – with transparent pricing across 180+ countries and 140+ currencies. Responsibilities Position Purpose: We are seeking a Mid Fullstack Engineer to design, build, and enhance scalable, business-critical applications across backend and frontend layers. This role is ideal for an engineer who: Works confidently across C#/.NET backend and React frontend Owns features end-to-end with minimal supervision Raises quality and engineering discipline within their squad Effectively leverages AI-assisted development tools to improve productivity and maintainability As a Mid Fullstack Engineer, you are a strong, autonomous contributor and an emerging technical leader within your team. You combine solid fullstack expertise with disciplined engineering practices and pragmatic adoption of agentic development workflows. Key Responsibilities will include: 1. Fullstack Development & Feature Ownership Contribute across the full software development lifecycle — from refinement and technical design through implementation, testing, deployment, and production support. Build and maintain backend services using C# and .NET ( ASP.NET Core, Web APIs). Develop modern frontend components using React and TypeScript. Design and consume RESTful APIs, ensuring clear and stable contracts between frontend and backend. Work with databases and data models to ensure performance, integrity, and reliability. Own medium-sized features end-to-end across the stack. Write clean, modular, and testable code with appropriate unit and integration tests. Participate actively in code reviews and architectural discussions. You are expected to deliver independently while contributing to continuous improvement of the overall system. 2. Agentic Development Application (Squad-Level Optimization) Agent-augmented engineering is an expected capability at this level. Actively use AI-assisted development tools (e.g., Claude Code, GitHub Copilot, or equivalent) to: Accelerate feature implementation across backend and frontend Generate and improve unit/integration tests Refactor components and services Assist in debugging and issue investigation Improve documentation and code clarity Critically evaluate and validate AI-generated code before committing it to production. Ensure AI-assisted output aligns with: Established architectural patterns Security and compliance standards Maintainability expectations Contribute to making the codebase more “agent-ready” by: Improving modularity and separation of concerns Strengthening TypeScript typing and API contracts Increasing automated test coverage Reducing unnecessary coupling Share effective AI-assisted development practices with teammates. You are an advanced practitioner of agentic tools who improves how your squad leverages them safely and effectively. 3. Delivery & Collaboration Collaborate closely with Product, QA, DevOps, and senior engineers to deliver high-quality features. Participate in story refinement, estimation, and technical breakdown. Identify and surface technical risks early. Support production systems through debugging and root cause analysis. Contribute to CI/CD pipelines and ensure reliable deployments. You help strengthen delivery predictability and engineering quality within your team. 4. Technical Growth & Influence Demonstrate strong ownership and accountability across frontend and backend components. Provide thoughtful, constructive code reviews that improve quality. Mentor junior engineers informally where appropriate. Continuously improve your fullstack expertise and understanding of cloud-native patterns. Stay current with evolving .NET, React, Azure, and AI-assisted development practices. You are progressing toward broader architectural influence and cross-team impact (Senior trajectory). Qualifications To land this role you will need: Fullstack Engineering 3–6 years of professional software engineering experience with meaningful fullstack exposure. Strong working knowledge of C# and .NET ( ASP.NET Core, Web APIs). Solid experience building frontend applications with React and TypeScript. Experience designing and consuming RESTful services. Familiarity with relational databases (e.g., SQL Server) and basic data modeling. Understanding of clean code principles, maintainable design, and automated testing. Experience using Git, CI/CD pipelines, and modern development workflows. Agentic Development Capabilities Hands-on experience using AI-assisted coding tools (e.g., GitHub Copilot, Claude Code, or equivalent). Ability to evaluate AI-generated backend and frontend code critically. Understanding of how modular design, strong typing, documentation, and test coverage improve AI tool effectiveness. Pragmatic mindset — using AI to accelerate delivery without compromising quality or security. Collaboration & Mindset Strong team collaboration and communication skills. Ability to take feedback constructively and improve continuously. Growth mindset with ambition to expand technical ownership and cross-stack expertise. Comfortable working in Agile, cross-functional environments. Nice to Have Exposure to Azure or other cloud platforms. Experience with Docker, microservices, or distributed systems. Familiarity with CI/CD pipelines and automated testing frameworks. Experience contributing to shared component libraries or frontend standards. Interest or exposure to financial services, payments, or trading platforms. Working environment: Hybrid 4-days in office with private parking for employees.

🏢 Summary: 3-month paid internship focused on building and prototyping AI-driven applications and automation tools in small, autonomous teams. Interns design, implement and integrate solutions using modern AI tools, APIs and services, delivering functional projects end-to-end. The role emphasizes experimentation, problem-solving and practical use of AI to improve efficiency and quality. 🗂️ Requirements: Student status in Computer Science or related field or proven practical project experience, Ability to independently solve technical problems, Strong interest in AI and automation, Willingness to experiment with and implement AI tools, Basic programming skills in at least one language, Ability to logically break down problems, Basic knowledge of Git, Ability to read technical documentation, Ability to integrate APIs and external services 📃 Skills: Python, JavaScript, Java, Git, AI, Automation, APIs, REST, Prototyping 🏢 Description: Co jest dla nas ważne? Umiejętność samodzielnego rozwiązywania problemów i chęć eksperymentowania Zainteresowanie AI, automatyzacją i nowoczesnym podejściem do tworzenia oprogramowania Naturalna skłonność do budowania, testowania i poprawiania rozwiązań AI-powered mindset: otwarta głowa na testowanie nowych narzędzi AI i chęć wdrażania ich tam, gdzie mogą przynieść realną oszczędność czasu lub poprawę jakości. Status studenta – kierunek: informatyki lub kierunków pokrewnych, lub praktyczne doświadczenie projektowe poza studiami Mile widziane: podstawy programowania w co najmniej jednym języku, np. Python, JavaScript, Java lub podobnym umiejętność logicznego rozkładania problemu na kroki podstawowa znajomość pracy z Gitem umiejętność czytania dokumentacji technicznej komunikatywność i gotowość do regularnego pokazywania postępów Podczas stażu będziesz: Budować proste lub średnio złożone aplikacje i narzędzia Automatyzować procesy z użyciem AI Prototypować rozwiązania wspierające pracę zespołów biznesowych lub technologicznych Integrować różne usługi, API i narzędzia Analizować problemy, projektować podejścia, implementować i demonstrować efekt Szukamy osób, które chcą się sprawdzić w nowym modelu tworzenia oprogramowania: małe zespoły, wysoki poziom samodzielności, intensywne wykorzystywanie narzędzi AI, odpowiedzialność za dowiezienie realnego rozwiązania W ramach 3 miesięcznego stażu każda osoba lub para stażystów otrzyma do realizacji średnio złożony projekt, który będzie można samodzielnie zaplanować, zbudować i doprowadzić do działającego efektu Oferujemy Płatny staż w największej polskiej firmie modowej o międzynarodowym zasięgu 25% zniżki na zakupy w salonach i sklepach online marek LPP - dla Ciebie i Twoich bliskich Codzienną pracę na nowoczesnym sprzęcie Budżet integracyjny Kartę Multisport Jak wysłać swoje zgłoszenie na staż? Krok 1 Należy wypełnić formularz aplikacyjny Krok 2 Następnie należy poczekać na kontakt z naszej strony oraz zaproszenie na spotkanie online, które potrwa 30 minut Krok 3 Po rozmowie rekrutacyjnej, niezależnie od podjętej decyzji, nastąpi ponowny kontakt z naszej strony wraz z przekazaniem feedbacku

🏢 Summary: Lead Fullstack Engineer role responsible for driving the technical direction and evolution of an FX Payments platform using .NET, React, and Azure. Combines hands-on development with team leadership, architectural ownership, and implementation of AI-assisted engineering practices. Focused on scalable cloud-native systems, delivery excellence, and measurable productivity improvements. 🗂️ Requirements: Significant experience as Senior or Lead Fullstack Engineer, Strong expertise in C# and .NET for backend APIs and distributed systems, Hands-on experience with React and TypeScript in modern frontend architectures, Experience with Azure cloud services and containerized workloads, Knowledge of scalable system design and distributed architecture, Experience with CI/CD pipelines and automated testing, Hands-on use of AI-assisted development tools, Ability to review and validate AI-generated code, Experience leading engineering teams in Agile environments, Bachelor’s degree in Information Technology 📃 Skills: C#, .NET, React, TypeScript, Azure, Kubernetes, CI/CD, REST, Microservices, GitHub, Copilot, Claude, Docker, SQL, DevOps 🏢 Description: Overview Permanent, full-time, hybrid Connecting clients to markets – and talent to opportunity. With 5,400+ employees and over 80,000 institutional, commercial, and payments clients, we operate from more than 80 offices spread across six continents. As a Fortune 100, Nasdaq-listed provider, we connect clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors. Whether you want to forge a career connecting our retail clients to potential trading opportunities, or ingrain yourself in the world of institutional investing, StoneX Group is made up of four business segments that offer endless potential for progression and growth. Business Segment Overview: A Swift-accredited service bureau and member, our Payments division provides NGOs, institutions and non-profits the ability to make a local difference, globally – with transparent pricing across 180+ countries and 140+ currencies. Responsibilities Position Purpose: We are seeking a Lead Fullstack Engineer to lead the FX Payments engineering team through the next stage of platform evolution. This role combines: Hands-on fullstack engineering (.NET, React, Azure) Direct people leadership of a scrum team (~5 engineers) Architectural ownership of a critical product domain Operationalization of agentic development practices within the team You will be accountable for engineering quality, delivery predictability, and team capability growth — while driving the practical adoption of agent-powered workflows that measurably improve productivity and code quality. This is a high-impact leadership role for a senior engineer ready to shape both systems and engineering culture. Key Responsibilities will include: 1. Technical & Architectural Leadership Own the technical direction of FX Payments within your domain. Lead design and evolution of scalable, maintainable fullstack solutions using: C# / .NET (backend APIs and services) React / TypeScript (modern frontend architecture) Azure cloud-native services Ensure architectural decisions support performance, resiliency, observability, and regulatory compliance. Conduct structured design reviews and maintain architectural documentation and ADRs. Drive modernization of legacy components toward modular, testable, cloud-ready patterns. 2. Agentic Development Leadership This is a defining aspect of the role. Introduce and standardize agent-based engineering workflows within the team (e.g., Claude Code, Copilot Workspace, or equivalent). Enable the team to safely leverage AI agents for: Code refactoring Test generation Debugging assistance Documentation improvement Dependency upgrades Ensure all AI-generated code is reviewed rigorously for: Architectural alignment Security vulnerabilities Regulatory compliance Maintainability Improve the “agent-readiness” of the codebase through: Modular design Clear domain boundaries Strong test coverage High-quality documentation Establish team-level best practices for safe, auditable AI-assisted development. Partner with Principal Engineers and platform leaders to align with broader agentic engineering standards. Your objective is not experimentation alone — but measurable improvements in throughput, quality, and developer effectiveness within your domain. 3. Delivery Ownership & Execution Excellence Lead and manage a cross-functional scrum team (~5 engineers). Drive effective refinement — translating product requirements into clear, technically sound work items. Maintain predictable delivery through disciplined planning, risk management, and dependency tracking. Contribute production-ready code across backend and frontend components. Ensure strong CI/CD, automated testing, and deployment hygiene. Partner closely with Product, QA, and Architecture stakeholders. 4. People Leadership & Engineering Culture Provide direct people management, coaching, and performance feedback. Mentor engineers in: System design Clean coding standards Cloud-native patterns Responsible use of agentic tooling Build a culture of ownership, accountability, and continuous improvement. Encourage experimentation with guardrails — balancing innovation with production stability. Identify skill gaps and support targeted upskilling (including AI-augmented engineering practices). Qualifications To land this role you will need: Core Fullstack Engineering Significant experience as a senior or lead fullstack engineer. Strong backend expertise in C# / .NET (REST APIs, distributed systems). Deep hands-on experience with React and modern frontend architecture (TypeScript, component-driven design, state management). Azure cloud experience (App Services, Functions, Kubernetes, containerized workloads). Strong understanding of scalable system design, performance tuning, and distributed architecture. Experience with CI/CD pipelines, automated testing frameworks, and DevOps practices. Agentic Development Capabilities Hands-on experience using AI-assisted development tools (e.g., Claude Code, GitHub Copilot, Copilot Workspace, or equivalent). Ability to guide a team in adopting AI tools responsibly within enterprise environments. Understanding of how modular architecture, documentation quality, and test coverage impact AI agent effectiveness. Experience reviewing and validating AI-generated code for correctness and maintainability. Strong judgment in balancing acceleration with governance and security. Leadership & Collaboration Proven experience leading small engineering teams. Strong facilitation skills for refinement and technical discussions. Ability to communicate architectural decisions and delivery risks clearly. Experience working in Agile, cross-functional environments. Strong stakeholder management and collaboration skills. Education / Certification Requirements: Bachelor’s degree in information technology. Working environment: Hybrid 4-days in office.

🏢 Summary: Lead Fullstack Engineer role driving the evolution of an FX Payments platform, combining hands-on development with team leadership and architectural ownership. The position focuses on building scalable cloud-native solutions using .NET, React, and Azure while introducing AI-assisted development practices. Responsible for delivery quality, system modernization, and measurable improvements in engineering productivity. 🗂️ Requirements: Significant experience as Senior or Lead Fullstack Engineer, Strong expertise in C# and .NET for REST APIs and distributed systems, Deep hands-on experience with React and TypeScript, Experience with Azure cloud services and containerized workloads, Strong knowledge of scalable system design and distributed architecture, Experience with CI/CD pipelines and automated testing, Hands-on experience with AI-assisted development tools, Experience leading and mentoring engineering teams, Bachelor’s degree in Information Technology 📃 Skills: C#, .NET, React, TypeScript, Azure, Kubernetes, Docker, CI/CD, REST, Git, Copilot, Claude, Agile 🏢 Description: Overview Permanent, full-time, hybrid Connecting clients to markets – and talent to opportunity. With 5,400+ employees and over 80,000 institutional, commercial, and payments clients, we operate from more than 80 offices spread across six continents. As a Fortune 100, Nasdaq-listed provider, we connect clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors. Whether you want to forge a career connecting our retail clients to potential trading opportunities, or ingrain yourself in the world of institutional investing, StoneX Group is made up of four business segments that offer endless potential for progression and growth. Business Segment Overview: A Swift-accredited service bureau and member, our Payments division provides NGOs, institutions and non-profits the ability to make a local difference, globally – with transparent pricing across 180+ countries and 140+ currencies. Responsibilities Position Purpose: We are seeking a Lead Fullstack Engineer to lead the FX Payments engineering team through the next stage of platform evolution. This role combines: Hands-on fullstack engineering (.NET, React, Azure) Direct people leadership of a scrum team (~5 engineers) Architectural ownership of a critical product domain Operationalization of agentic development practices within the team You will be accountable for engineering quality, delivery predictability, and team capability growth — while driving the practical adoption of agent-powered workflows that measurably improve productivity and code quality. This is a high-impact leadership role for a senior engineer ready to shape both systems and engineering culture. Key Responsibilities will include: 1. Technical & Architectural Leadership Own the technical direction of FX Payments within your domain. Lead design and evolution of scalable, maintainable fullstack solutions using: C# / .NET (backend APIs and services) React / TypeScript (modern frontend architecture) Azure cloud-native services Ensure architectural decisions support performance, resiliency, observability, and regulatory compliance. Conduct structured design reviews and maintain architectural documentation and ADRs. Drive modernization of legacy components toward modular, testable, cloud-ready patterns. 2. Agentic Development Leadership This is a defining aspect of the role. Introduce and standardize agent-based engineering workflows within the team (e.g., Claude Code, Copilot Workspace, or equivalent). Enable the team to safely leverage AI agents for: Code refactoring Test generation Debugging assistance Documentation improvement Dependency upgrades Ensure all AI-generated code is reviewed rigorously for: Architectural alignment Security vulnerabilities Regulatory compliance Maintainability Improve the “agent-readiness” of the codebase through: Modular design Clear domain boundaries Strong test coverage High-quality documentation Establish team-level best practices for safe, auditable AI-assisted development. Partner with Principal Engineers and platform leaders to align with broader agentic engineering standards. Your objective is not experimentation alone — but measurable improvements in throughput, quality, and developer effectiveness within your domain. 3. Delivery Ownership & Execution Excellence Lead and manage a cross-functional scrum team (~5 engineers). Drive effective refinement — translating product requirements into clear, technically sound work items. Maintain predictable delivery through disciplined planning, risk management, and dependency tracking. Contribute production-ready code across backend and frontend components. Ensure strong CI/CD, automated testing, and deployment hygiene. Partner closely with Product, QA, and Architecture stakeholders. 4. People Leadership & Engineering Culture Provide direct people management, coaching, and performance feedback. Mentor engineers in: System design Clean coding standards Cloud-native patterns Responsible use of agentic tooling Build a culture of ownership, accountability, and continuous improvement. Encourage experimentation with guardrails — balancing innovation with production stability. Identify skill gaps and support targeted upskilling (including AI-augmented engineering practices). Qualifications To land this role you will need: Core Fullstack Engineering Significant experience as a senior or lead fullstack engineer. Strong backend expertise in C# / .NET (REST APIs, distributed systems). Deep hands-on experience with React and modern frontend architecture (TypeScript, component-driven design, state management). Azure cloud experience (App Services, Functions, Kubernetes, containerized workloads). Strong understanding of scalable system design, performance tuning, and distributed architecture. Experience with CI/CD pipelines, automated testing frameworks, and DevOps practices. Agentic Development Capabilities Hands-on experience using AI-assisted development tools (e.g., Claude Code, GitHub Copilot, Copilot Workspace, or equivalent). Ability to guide a team in adopting AI tools responsibly within enterprise environments. Understanding of how modular architecture, documentation quality, and test coverage impact AI agent effectiveness. Experience reviewing and validating AI-generated code for correctness and maintainability. Strong judgment in balancing acceleration with governance and security. Leadership & Collaboration Proven experience leading small engineering teams. Strong facilitation skills for refinement and technical discussions. Ability to communicate architectural decisions and delivery risks clearly. Experience working in Agile, cross-functional environments. Strong stakeholder management and collaboration skills. Education / Certification Requirements: Bachelor’s degree in information technology. Working environment: Hybrid 4-days in office.