Forward-Deployed AI Engineer

🏢 Summary: Frontend role focused on building and maintaining modern React and Next.js applications enhanced with generative AI capabilities. The position involves integrating LLM-powered features into production systems and collaborating directly with enterprise clients on AI platform solutions. It combines advanced frontend engineering with practical AI implementation in real-world environments. 🗂️ Requirements: 3–5 years commercial experience with React, Next.js, TypeScript, Strong knowledge of Next.js including App Router, Understanding of React Server Components and Server Actions, Experience building and maintaining production-grade web applications, Experience integrating AI-powered features into applications, Hands-on experience with OpenAI or Anthropic APIs, Knowledge of streaming responses, structured outputs, tool calling, prompt engineering, Experience with Git and CI/CD workflows, Experience with AI-assisted development tools, Fluent English (C1+) 📃 Skills: React, Next.js, TypeScript, JavaScript, OpenAI, Anthropic, LLM, Git, CI/CD, AppRouter, RSC, ServerActions, PromptEngineering, Vercel, MCP, RAG 🏢 Description: Frontend React/Next.js Developer with AI Mindset About Blazity At Blazity, we are a team of AI engineering experts building AI-powered products, agents, and intelligent workflows on top of modern web technologies. We partner with enterprise clients as trusted technology advisors, helping them build scalable products that combine exceptional user experiences with cutting-edge AI capabilities. We believe the best frontend engineers today are AI-native engineers. They don't just use AI tools to write code — they understand how AI products work, how LLM-powered features are designed, and how to deliver reliable experiences for real users. We're looking for a Frontend React/Next.js Developer with an AI mindset who wants to work on products at the intersection of modern frontend engineering and generative AI. About the Project You'll join a team working with a leading enterprise AI platform helping organizations evaluate, monitor, and improve the reliability and performance of AI systems deployed in production environments. This is a client-facing role. You'll collaborate directly with client engineers, product teams, and stakeholders while helping deliver business-critical solutions. Excellent communication skills and fluent English are essential, as you'll participate in technical discussions and day-to-day collaboration with international teams. Must-have Technical Skills 3–5 years of commercial experience building applications with React, Next.js, and TypeScript. Strong understanding of modern Next.js development, including App Router. Good understanding of React Server Components and Server Actions. Experience building and maintaining production-grade web applications. Experience integrating AI-powered functionality into products. Hands-on experience with OpenAI and/or Anthropic APIs. Familiarity with: streaming responses, structured outputs, tool calling, prompt engineering fundamentals. Experience working with Git and modern CI/CD workflows. Experience using AI-assisted development tools such as Claude Code, Cursor, Windsurf, GitHub Copilot, or similar. Soft Skills Strong communication skills and active listening. Ability to work directly with clients and stakeholders. Ownership mindset and proactive approach to problem-solving. Ability to collaborate effectively within cross-functional teams. Adaptability and willingness to learn new technologies. English at C1 level or higher (written and spoken). Nice-to-Have Experience with Vercel AI SDK. Experience with MCP (Model Context Protocol). Exposure to Agent SDKs. Experience building RAG-based solutions. Previous experience in consulting environments. What You Will Do Build Modern Applications Develop and maintain scalable applications using React, Next.js, and TypeScript. Deliver high-quality, maintainable, and performant frontend solutions. Collaborate with designers, engineers, and product stakeholders. Build AI-Powered Features Integrate OpenAI and Anthropic models into production applications. Develop AI-powered workflows and user experiences. Implement streaming, tool usage, and structured outputs. Collaborate with Clients Participate in technical discussions and project workshops. Work directly with client stakeholders and engineering teams. Help translate business requirements into technical solutions. Grow as an AI Engineer Learn modern AI engineering practices from experienced team members. Gain hands-on experience building real-world AI-powered products. Contribute to projects at the forefront of AI adoption. What Makes Us Special? 📈 Our team has a genuine impact on the company’s decisions and direction. ✨ No bureaucracy – we keep things simple and efficient. 🗺️ 100% remote work from Poland. ⏳ Flexible working hours. 🤝 Open communication and continuous feedback. 🏥 Health insurance fully covered by us. 🏃 Sports card fully covered by us. 🌴 29 paid days off. 🍕 Team gatherings and social events. Employment Details B2B: 80–120 PLN net + VAT / hour Location: 100% remote from Poland

🏢 Summary: The offer is for a Senior AI Fullstack Engineer to design and deliver production-ready, LLM-powered web applications using modern React and Next.js architecture. The role focuses on building autonomous agents, RAG systems, and AI-driven workflows integrated with enterprise-grade products. It involves end-to-end ownership of scalable AI solutions from architecture to deployment. 🗂️ Requirements: 8+ years experience as consultant or forward deployed engineer, Strong experience with Next.js (App Router), React, TypeScript, Deep understanding of Server and Client Components (RSC), Experience with streaming, caching, revalidation, Server Actions, Experience with Vercel AI SDK, LangGraph or MCP, Experience building RAG systems, Hands-on experience with Anthropic and OpenAI APIs, Experience shipping LLM-powered features to production, Practical experience with prompt engineering and structured outputs, Experience with tool calling and agent workflows, Experience with multi-turn orchestration, Understanding of token economics and context windows, Experience with prompt evaluation methods, Ability to design robust, production-ready AI systems 📃 Skills: Next.js, React, TypeScript, RSC, Vercel, LangGraph, MCP, RAG, Claude, OpenAI, Anthropic, Prompting, Streaming, ServerActions, Agents, APIs 🏢 Description: About the Role At Blazity, we are a team of React.js and Next.js experts building modern, API-first digital products for enterprise clients. We are expanding our AI capabilities—autonomous agents, AI-driven automation, and LLM-powered workflows—and are looking for a Senior AI Fullstack Engineer who can design and ship production-ready AI systems. You will work at the intersection of modern web architecture and generative AI , taking ownership of solutions delivered to real users. Our requirements Must-have Technical Excellence: 8+ years of experience as a consultant / forward deployed engineer Strong experience with Next.js (App Router), React, TypeScript Deep understanding of: Server vs Client Components (RSC) streaming, caching, revalidation, Server Actions Vercel AI SDK / LangGraph / MCP Experience building RAG systems Claude extended thinking / prompt caching / Batch APIs AI Engineering: Proven experience shipping LLM-powered features to production Hands-on with Anthropic / OpenAI APIs (messages, tool use, streaming) Practical experience with: prompt engineering (structured output, few-shot, XML) tool calling / agent workflows multi-turn orchestration Understanding of: token economics (input/output costs, context window) latency vs quality trade-offs Reliability & Quality: Experience with: prompt evaluations (LLM-as-judge, rule-based) handling hallucinations and failure modes Ability to design robust AI systems , not just prototypes Soft Skills: Strong ownership mindset Experience working directly with clients Clear communication and structured thinking (English C1) Ability to make decisions in ambiguous environments Nice-to-have: What You Will Do Ship Production Apps: Build scalable web applications using Next.js (App Router) and TypeScript , ensuring high performance and clean architecture. Engineer AI Workflows: Develop and orchestrate LLM-powered features using Anthropic and OpenAI APIs, focusing on tool use and streaming. Agentic Orchestration: Design autonomous agent loops and multi-turn workflows, knowing when to use a structured pipeline versus a dynamic agent. Optimize & Evaluate: Manage token economics (pricing, context windows) and implement prompt evaluations (LLM-as-judge, rule-based) to ensure system reliability. Collaborate: Work directly with senior engineers, founders, and client teams to shape AI capabilities from concept to production. What we offer B2B: 120 – 180 PLN/h + VAT 🔥 100% remote (Poland) 29 paid vacation days Private healthcare + sports card High-impact work on real AI systems

🏢 Summary: Project Manager role focused on end-to-end delivery of enterprise digital products in an Agile environment, with strong emphasis on stakeholder communication and engineering team enablement. The position combines classic IT project management with AI-driven process optimization and collaboration on modern web and AI-powered systems. 🗂️ Requirements: 2–3 years Project Manager experience in IT services, Experience in international environments, Strong knowledge of Agile and Scrum, Understanding of T&M, Fixed Price, SLAs, Change Requests, Ability to manage scope, budget, timeline, risks, Experience with stakeholder and client management, Strong analytical skills with reports and dashboards, Fluent English (C1), Active use of AI tools in daily work, Understanding of web development concepts 📃 Skills: Agile, Scrum, T&M, SLA, React, Next.js, AI, LLM, Automation, Dashboards 🏢 Description: About us At Blazity, we are a team of React.js and Next.js experts building modern, API-first digital products for enterprise clients. We partner with global organizations as trusted technology advisors, delivering complex web platforms, e-commerce solutions, and increasingly — AI-powered systems, including autonomous agents and LLM-driven workflows. We value ownership, transparency, and strong collaboration — both internally and with our clients. About the role We are looking for a Project Manager who will take ownership of delivering high-quality digital products for our enterprise clients. This role combines classic project management with a strong focus on communication, stakeholder alignment, and enabling engineering teams to do their best work. You will be responsible for managing projects end-to-end while working closely with developers, clients, and leadership. About you Must-have: 2–3 years of experience as a Project Manager in IT services, working in international environments Strong understanding of Agile (Scrum) and concepts like T&M, Fixed Price, SLAs, Change Requests Ability to manage projects holistically: scope, budget, timeline, risks Excellent communication skills — absolutely key in this role Strong analytical mindset — you like working with data, reports, and dashboards High attention to detail and reliability — people trust you to deliver Strong stakeholder management skills and confidence in client-facing situations High adaptability and flexibility — comfortable working in a fast-changing, dynamic environment Fast learner — able to quickly understand new domains, tools, and project contexts Fluent English (C1) Interest in AI and automation (AI-first mindset) Active usage of AI tools to optimize daily work and project management processes Nice to have: Experience working with enterprise clients Experience with AI or process automation (e.g. using AI tools to improve workflows, productivity, or delivery processes) Exposure to AI/LLM-based projects Technical background or understanding of web development (React / Next.js) What you will do Manage projects end-to-end: from discovery to delivery Plan scope, timelines, budgets, and resource allocation Identify risks early and proactively address them Build strong relationships with clients and act as a trusted partner Ensure smooth communication between stakeholders and development teams Support engineers by removing blockers and enabling effective delivery Lead and support Agile processes (Scrum ceremonies, backlog prioritization, planning) Create clear reports, summaries, and performance insights Maintain accurate and structured project documentation Collaborate with the Delivery team and contribute to improving internal processes Leverage AI tools to streamline project workflows, reporting, and communication Identify opportunities to automate internal processes and improve delivery efficiency using AI Support adoption of AI-driven solutions within project and delivery processes What we offer B2B contract: 60–80 PLN net + VAT / hour 100% remote work (Poland-based) 29 paid vacation days Private medical care (fully covered) Sports card (fully covered) Work on impactful, modern projects for enterprise clients High level of ownership and real influence on how projects are delivered Opportunity to grow within a strong Delivery team and learn from experienced PMs If you’re someone who thrives in a dynamic environment, communicates clearly, adapts quickly to change, and enjoys working closely with people and technology — we’d love to talk. 🚀

🏢 Summary: Junior AI Developer role focused on building and integrating LLM-based features, simple AI workflows, and early-stage agent systems in real-world production projects. The position emphasizes hands-on experimentation with AI tools and using web technologies as a foundation for developing intelligent systems. It is designed for students or early-career developers with practical experience in AI experimentation. 🗂️ Requirements: Active use of agentic coding tools (Claude, Codex, Cursor), Hands-on experimentation with LLMs (chatbots, automation, structured outputs), Understanding of LLM concepts and AI feature development, Knowledge of JavaScript or TypeScript, Knowledge of React or Next.js, Understanding of REST APIs, Experience integrating LLM APIs, Ability to design and iterate prompts, English C1 level 📃 Skills: JavaScript, TypeScript, React, Next.js, REST, APIs, LLM, OpenAI, Anthropic, Prompting, Git, Claude, Codex, Cursor 🏢 Description: About the Role At Blazity, we are building modern web applications and rapidly expanding into AI-powered systems — agents, automation, and LLM-based workflows . We are looking for a high-potential Junior AI Developer (student or early career) who is strongly interested in AI and LLMs , actively experiments with them, and wants to turn that into real-world, production experience. This is not a standard frontend role — this is an AI-first position , where web development is a tool to build intelligent systems. Our requirements AI-first mindset You actively use agentic coding tools like: Claude Code / Codex / Cursor You have experimented with AI , e.g.: building a chatbot automating tasks with LLMs generating structured outputs You are curious: how LLMs work how to build real AI features (not just use them) This role is for people who already do things with AI, not just read about it. Technical foundations Knowledge of: JavaScript / TypeScript React or Next.js (even small projects) Understanding of APIs (REST basics) Learning mindset You learn by building (projects > theory) You are comfortable making mistakes and iterating You are proactive and self-driven Big plus First experience with: OpenAI / Anthropic APIs prompt engineering (structured output, few-shot) You built: small AI apps (chatbot, automation, AI tool) GitHub projects showing AI experiments Participation in hackathons (especially AI-related) Other English C1 What You Will Do Work on real AI features Support development of: LLM-based features simple AI workflows early-stage agent-like systems Help with: prompt design and iteration testing and improving AI outputs building simple integrations with LLM APIs What we offer Hands-on experience with real AI systems in production Work with experienced engineers building AI solutions Fast growth path toward AI Engineer role Opportunity to work on real client projects (not toy problems) Location 100% remote from Poland

🏢 Summary: Frontend Engineer role focused on building and owning the UI layer of production-ready AI products for B2B clients using TypeScript and React. The position involves developing performant, maintainable interfaces, integrating REST APIs, and handling real-time data flows in close collaboration with backend engineers. This is a hands-on role working on client-facing AI systems where usability and reliability are critical. 🗂️ Requirements: 3–5 years of experience building production frontend applications, Strong experience with TypeScript and React, Experience integrating REST APIs, Experience handling asynchronous UI states, Ability to manage authentication, loading, and streaming states, Experience with SSE or WebSockets, Ability to read and debug Python and FastAPI code 📃 Skills: TypeScript, React, Vite, REST, SSE, WebSockets, Python, FastAPI, Tailwind, shadcn 🏢 Description: About Agentica Agentica is an AI automation startup that designs and deploys custom AI products and agents for B2B clients worldwide. The company builds production-ready AI systems that automate and replace manual business processes across helpdesks, internal tools, e-commerce, production, and other high-friction areas. Its team delivers practical agentic AI solutions for clients ranging from cybersecurity software distributors to global Web3 companies. The Role You’ll own the frontend layer of AI products and client projects, working mainly with TypeScript and React. This is hands-on work on production systems where usability, performance, and reliability matter. You’ll work closely with the tech team and be responsible for shipping clean, maintainable UI code ready for client use. What You’ll Do Build and maintain frontend applications using TypeScript, React, and Vite. Collaborate with backend engineers to integrate REST APIs and manage async data flows. Prototype new interfaces with clients in early stages. Implement clean, extensible component architectures. Handle auth states, loading states, and streaming data (SSE / WebSockets). Read and debug Python / FastAPI backends when needed. Guide coding agents while ensuring code quality. What We’re Looking For Clear communication and strong ownership. AI-first mindset and ability to learn quickly. 3–5 years building production frontend applications. Strong TypeScript and React experience. Experience integrating APIs and handling async UI states. Comfortable reading Python / FastAPI code. Nice to Have Tailwind CSS or component libraries (e.g., shadcn/ui). B2B SaaS or enterprise product experience. What We Offer Attractive salary PLN 12,000–20,000 depending on experience. High-ownership projects with real technical depth and steep learning curves. Early-stage leverage: join while the company is scaling fast and shape how it grows. Fully remote or hybrid from our office in central Warsaw. Flexible working hours built around output, not presence. A senior, technically sharp team with hands-on AI and software delivery experience. Apply now and build leading AI products. Join a team that cares about quality, ownership, and real client impact.

🏢 Summary: Short-term (4+1 weeks) remote contract for a React Native Developer to build and deliver production-ready mobile features using React Native and Expo. The role focuses on ownership of implementation, clean architecture, and configuring EAS build pipelines for iOS and Android. Start ASAP with high engineering standards and independent work style. 🗂️ Requirements: Strong commercial experience with React Native, Hands-on experience with Expo ecosystem, Very good knowledge of TypeScript, Experience with Expo EAS build and deployment pipelines, Solid understanding of mobile app architecture, Experience with CI/CD pipelines, Ability to write maintainable and scalable code, Strong debugging and problem-solving skills, Experience with Apple and Google in-app payments, Experience integrating RevenueCat, Familiarity with mobile analytics tools, Experience publishing apps to App Store and Google Play 📃 Skills: React, ReactNative, Expo, TypeScript, EAS, CI/CD, RevenueCat, Firebase, iOS, Android, StyleSheet 🏢 Description: About the Role At Blazity we build modern digital products using React.js, Next.js, and API-first architectures for international clients. We focus on delivering clean, scalable, production-grade solutions with strong engineering ownership and high development standards. We are currently looking for a React Native Developer to join a short-term mobile project estimated for 4 weeks, with a possible 1-week extension if needed. The ideal candidate is someone who can take ownership of the implementation, work independently, and deliver high-quality mobile applications using React Native and Expo. Start: ASAP Our Requirements Must-have Technical Skills Strong commercial experience with React Native Hands-on experience with Expo ecosystem Very good knowledge of TypeScript Experience with Expo EAS build and deployment pipelines Solid understanding of mobile app architecture and production-ready development Experience working with CI/CD pipelines Ability to write maintainable, scalable, and well-structured code Strong debugging and problem-solving skills Nice-to-have Experience with Apple / Google in-app payments Experience integrating RevenueCat Familiarity with mobile analytics solutions (e.g. Firebase Analytics) Experience publishing apps to App Store / Google Play Soft Skills Ownership mindset — we are looking for engineers who understand and own their technical decisions Strong communication skills and proactive collaboration Ability to work independently in a fast-paced environment Attention to code quality and maintainability English at a communicative level (B2/C1) Technology Stack React Native (Expo) TypeScript Expo EAS Pipeline React Native StyleSheet useTheme (optional theming support) RevenueCat Apple / Google in-app payments Firebase Analytics (optional) CI/CD pipelines What You Will Do Build and deliver mobile application features using React Native and Expo Maintain high engineering standards and clean architecture Configure and manage EAS build pipelines for iOS and Android Collaborate closely with the team to deliver production-ready features within tight timelines Take ownership of implementation decisions and code quality Support deployment and release processes Project Details Duration: 4 weeks Possible extension: +1 additional week Start date: ASAP Work style: Remote Location: Poland preferred Salary Range B2B: 140-160 PLN net+VAT/h What We Offer Fast-moving, hands-on project environment Fully remote collaboration from Poland Opportunity to work with experienced React and Next.js engineers High ownership and autonomy International projects and modern tech stack

🏢 Summary: Long-term remote B2B opportunity for an experienced Fullstack Software Developer to build scalable React/Next.js and Python (FastAPI) applications enhanced with AI/LLM integrations. The role focuses on modern frontend architecture, async backend services, real-time systems, and production-grade AI workflows. You will design end-to-end architectures and deliver secure, high-performance solutions in a distributed engineering team. 🗂️ Requirements: 5+ years experience as Fullstack or Software Engineer, Strong React and Next.js experience in production, Strong TypeScript proficiency, Strong Python experience with async programming, Experience with FastAPI, Experience designing scalable distributed systems and APIs, Knowledge of frontend architecture, state management, performance optimization, Experience with automated testing frameworks, Experience with REST, GraphQL, WebSockets, Hands-on experience integrating AI/LLM services (OpenAI, Azure AI or similar), Experience with LangChain or similar agent frameworks, Strong system design and software architecture knowledge, Experience working in Agile environments, Fluency in English, EU citizenship and residence in Poland 📃 Skills: React, Next.js, TypeScript, Python, FastAPI, Tailwind, Playwright, Vitest, React, Testing, Library, pytest, REST, GraphQL, WebSockets, OpenAI, Azure, LangChain, AI, LLM 🏢 Description: Project Information: Type of project: IT services Work mode: Remote from Poland Budget: 130–160 PLN net/h (B2B) Project length: Long-term Start date: ASAP (depending on candidate’s availability) Only candidates with citizenship in the European Union and residence in Poland Description: We are seeking an experienced Software Developer (React + Python + AI) to join an innovative engineering remote team working on modern full-stack applications enhanced with AI capabilities. In this role, you will contribute to designing scalable systems, building high-performance web applications, and integrating advanced AI/LLM solutions into production environments. Project Scope: - Design and develop modern web applications using React / Next.js and TypeScript - Build reusable, scalable, and accessible UI components using Tailwind and modern design systems - Drive frontend architecture decisions including state management, modularization, and performance optimization - Ensure high-quality frontend delivery with strong test coverage (Playwright, Vitest, React Testing Library) - Design and develop backend services using Python (async) and FastAPI - Build scalable REST and event-driven APIs as well as real-time systems - Implement WebSockets or similar technologies for real-time communication - Develop unit, integration, and end-to-end testing strategies for backend systems - Design and implement end-to-end system architecture in collaboration with cross-functional teams - Integrate services using REST APIs, GraphQL, and WebSockets - Participate in performance tuning, scalability improvements, and system optimization - Integrate AI/LLM-based solutions using OpenAI / Azure AI services - Develop AI workflows using frameworks such as LangChain or similar agent-based tools - Apply prompt engineering techniques and optimize model interactions for production use cases - Orchestrate multiple AI models and services to deliver intelligent features - Apply security and privacy best practices across the full stack - Ensure adherence to secure coding standards and maintain high code quality through code reviews and automated testing - Collaborate closely with engineering teams to ensure consistency, reliability, and scalability of solutions Competence Demands: - Minimum 5+ years of experience as a Fullstack or Software Engineer - Strong experience with React / Next.js and TypeScript in production-grade applications - Strong proficiency in Python (async programming) and FastAPI - Experience designing scalable distributed systems and APIs - Solid understanding of frontend architecture, performance optimization, and state management - Experience with testing frameworks (Playwright, Vitest, React Testing Library, pytest or similar) - Familiarity with REST, GraphQL, and WebSockets - Hands-on experience integrating AI/LLM services (OpenAI, Azure AI, or similar) - Knowledge of agent frameworks such as LangChain or similar tools - Strong understanding of system design principles and software architecture - Experience working in Agile environments and cross-functional teams - Strong communication skills - Fluency in English (written and spoken) We Offer: - Remote working model - Dynamic and innovation-driven engineering environment - Full-time B2B agreement - Private medical care with dental care (covering 70% of costs) - Multisport card (also for an accompanying person) - Life insurance Recruitment Process: - Introductory call - Technical interview - Final decision

🏢 Summary: Front-end Engineer role focused on building and scaling React-based user interfaces for an internal GenAI and LLM-powered productivity platform. The position involves creating intuitive, high-performance UIs, integrating backend APIs, and delivering seamless AI-driven user experiences. This is a hybrid, full-time B2B contract role based in Krakow. 🗂️ Requirements: Commercial experience in front-end development, Proficiency in React.js, Strong knowledge of JavaScript (ES6+), Strong knowledge of CSS, Experience integrating REST or GraphQL APIs, Ability to handle asynchronous data flows, Strong UX/UI understanding, Knowledge of accessibility best practices, Knowledge of performance optimization, Experience with front-end testing practices 📃 Skills: React, JavaScript, ES6, CSS, Tailwind, CSS-in-JS, REST, GraphQL, APIs, UX, UI, Accessibility, Performance, Testing 🏢 Description: Krakow, Poland | Hybrid, 2 days/week Full‑time | B2B contract Shape the future of work with AI An internal GenAI & LLM‑powered productivity platform is already redefining how thousands of employees interact with intelligent tools. Now, we need you – a front‑end engineer with a passion for smooth, human‑centric interfaces – to bring these experiences to life. You won't just write components. You'll design and deliver React‑based UIs that make complex AI feel simple, intuitive, and even delightful. What you'll do Build responsive, high‑performance UIs that scale across devices and internal tools Rapidly prototype new features at the intersection of productivity and AI Collaborate closely with product managers and UX designers to turn research into polished interfaces Seamlessly integrate backend APIs (REST / GraphQL) into fluid front‑end experiences Champion modern front‑end best practices – accessibility, performance, maintainability, testing What you bring Must‑have: Solid commercial experience in front‑end development Deep proficiency in React.js, JavaScript (ES6+), and CSS (Tailwind / CSS‑in‑JS is a plus) Strong sense of UX/UI design – you notice the details others miss Experience integrating with backend APIs and handling asynchronous data flows Highly desirable: Previous work on AI / GenAI products or UX‑heavy applications (chat interfaces, copilots, creative tools, dashboards with complex interactions)

🏢 Summary: Senior Lead Engineer role focused on leading architecture and delivery of high-scale enterprise systems using React, Node.js, and TypeScript, while integrating advanced AI agents into deterministic workflows. The position combines hands-on development, technical leadership, and ownership of mission-critical systems in close collaboration with AI architects. It offers high impact on production-ready AI solutions for global enterprises. 🗂️ Requirements: 10+ years of software engineering experience, Proven experience in Lead, Principal, or Expert engineering roles, Expert-level knowledge of React, Expert-level knowledge of Node.js, Expert-level knowledge of TypeScript, Experience designing and scaling enterprise systems, Experience conducting code reviews and mentoring engineers, Ability to integrate AI/LLM agents into enterprise systems, Strong problem-solving skills for complex production issues, English proficiency at minimum B2 level 📃 Skills: React, Node.js, TypeScript, JavaScript, LLM, AI, Neurosymbolic, State, Machines, Python, NX, Snowflake 🏢 Description: Position: Senior Lead Engineer (React, Node.js & AI) Location: Kraków (On-site) Salary: 35,000 – 45,000 PLN net + VAT (B2B) + 10% yearly performance bonus About the Project Our Client is an innovative software company specializing in transforming raw AI capabilities into durable, deterministic enterprise systems. Known for their elite engineering culture, they specialize in delivering high-scale, production-ready AI solutions for global Fortune 500 enterprises. As a Senior Lead Engineer, you will become the right hand to the Principal Architect. This is a high-impact, operational leadership role where you will take full accountability for core React/Node/TS interfaces and backend systems, mentor the engineering team, and seamlessly integrate cutting-edge AI agents into complex enterprise workflows. Your leadership will drive delivery, allowing the Principal Architect to focus entirely on macro-level AI strategies and frontier models. Your Role Architecture & Delivery: Designing, building, and scaling core enterprise systems and interfaces using React, Node.js, and TypeScript. Technical Leadership: Taking extreme ownership of the codebase, enforcing world-class standards, conducting code reviews, and mentoring the engineering team to help them grow into independent problem solvers. AI Integration: Collaborating closely with the AI architecture team to embed LLM agents, neurosymbolic systems, and state machines into secure, deterministic enterprise workflows. Problem Solving: Acting as the ultimate escalation point for complex technical challenges, leading the charge to unblock production when critical issues arise. Strategic Execution: Translating high-level business requirements and macro-architecture directly into flawless, high-performing code that creates durable operating leverage. Requirements Experience: 10+ years of hard-core software engineering experience, with a proven track record in Lead, Principal, or Expert roles. Tech Stack Mastery: Absolute, atomic-level expertise in React, Node.js, and TypeScript ecosystem. Extreme Ownership: A proactive mindset – you don’t wait for tasks; you identify problems, design solutions, align resources, and deliver with absolute certainty. Leadership & Mentoring: Ability to elevate the team, set uncompromising quality standards, and guide junior/mid engineers. Business DNA: Deep understanding that code serves tangible business goals (ROI) and creates long-term value, rather than just being technical art. Communication: English at minimum B2 level to collaborate effectively with an elite team and global partners. Nice to have Practical experience or strong interest in Python, NX, and Snowflake. Hands-on exposure to frontier AI/LLM models and agents. What We Offer Global Impact: The chance to build next-generation neurosymbolic systems redefining how global enterprises utilize AI. Elite Environment: Direct collaboration alongside C-level executives, visionaries, and core software architects. High-End Hardware: New Apple MacBook Pro and external monitors provided as needed. Flexible Culture: Flexible working hours within a modern, fully-equipped office setup. Premium Office Perks: Access to a modern office in Kraków featuring a playroom, bike parking, shower, free coffee, beverages, and snacks (with no dress code). Growth & Benefits: Dedicated conference budget to support your continuous professional development.

🏢 Summary: Senior Frontend React Developer role focused on building and optimizing advanced UI applications with generative AI features in an enterprise environment. The position involves collaborating with cross-functional teams to deliver high-quality, user-centric solutions and integrating CI/CD and AI operational workflows. Hybrid work model based in Warsaw. 🗂️ Requirements: 4+ years of experience in React development, 4+ years of experience in JavaScript development, Strong knowledge of DevOps practices, Hands-on experience with Jira, Hands-on experience with GitLab, Hands-on experience with OpenShift, Proficiency in Linux, Experience with unit testing, Experience with system testing, Fluent Polish, Fluent English, Legal right to work in Europe 📃 Skills: React, JavaScript, DevOps, Jira, GitLab, OpenShift, Linux, CI/CD, Agile, Scrum, AI, Testing 🏢 Description: Empower innovation at the forefront of UI and AI technology — craft impactful user experiences that shape the future! Warszawa-based opportunity with hybrid work model (up to 2 remote days per week). As a Senior Frontend React Developer , you will be working for our client, a leader in enterprise software solutions, focusing on delivering cutting-edge UI and generative AI services. Join a collaborative, agile team committed to creating high-quality, user-centric applications that drive digital transformation and innovation. Your main responsibilities: Develop and optimize complex frontend applications using React and JavaScript, ensuring seamless user experiences Collaborate with cross-functional teams including data scientists and DevOps to deliver innovative UI solutions, including generative AI features Confirm technical designs, troubleshoot issues, and implement best practices for code quality and performance Contribute to the integration of CI/CD pipelines and operational workflows involving AI services Participate actively in Agile/Scrum ceremonies, promoting effective teamwork and continuous improvement You're ideal for this role if you have: 4+ years of proven experience in React and JavaScript development Strong understanding of DevOps practices with hands-on experience using Jira, GitLab, and OpenShift Proficiency in Linux OS and performing unit and system testing Excellent command of English, both written and spoken Ability to independently deliver high-quality code and confirm technical designs It is a strong plus if you have: (optional) Experience working with financial data, including Market Data and Reference Data Full-stack development expertise Knowledge of CI/CD pipelines and generative AI operational workflows Language Required for the role: Fluent in Polish and English Eligibility for the role: Only candidates with an existing legal right to work in Europe will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.