Mid Fullstack Developer (Python/React)

🏢 Summary: Full Stack Engineer role in the banking sector focused on delivering production-ready solutions within a scalable microservices architecture. The position combines backend application design and frontend development, emphasizing RESTful APIs, PostgreSQL databases, and automated CI/CD pipelines. This is a long-term B2B engagement with a hybrid work model and collaboration across global engineering teams. 🗂️ Requirements: Proven commercial experience in backend application design and enterprise deployment, Strong experience working within microservices architecture, Hands-on experience building and deploying RESTful APIs, Strong proficiency in PostgreSQL schema design and querying, Experience supporting automated CI/CD production releases, Full professional English proficiency 📃 Skills: Java, ReactJS, PostgreSQL, REST, Microservices, CI/CD, Docker, Kubernetes, GCP 🏢 Description: co.brick talents — powered by AI, powered by people. Join a global engineering team within the banking sector focused on delivering high-quality production code through a scalable microservices architecture. In this Full Stack role, you will balance backend application design and frontend development while fostering a modern, high-performing engineering culture. You will collaborate across regional boundaries, address technical risks, and drive automated deployment practices to push changes to production frequently. Details Engagement Details Contract Type: B2B Allocation: Full-time workload. Start Date: ASAP / 1-month notice period acceptable. Duration: Long-term (> 12 months). Work Model: Hybrid – 6 days per month required in the Kraków office (flexible scheduling, including the option to complete all 6 days in a single block). Recruitment Process: 2 rounds (Technical Interview & Live Coding). Responsibilities Hands-on Delivery: Write, review, and ship production-ready full-stack code aligned with a distributed microservices structure. API & Database Engineering: Design, develop, and deploy robust RESTful APIs and write schemas for relational databases. Cross-Functional Collaboration: Partner with a global engineering and business network, removing delivery impediments and proactively flagging risks to program management. Process Optimization: Monitor business, engineering, and non-functional project requirements to eliminate technical debt and process inefficiencies. Requirements Senior Engineering Baseline: Proven commercial track record in backend application design, development, and enterprise deployment. Architecture: Strong experience implementing and maintaining code within a microservices ecosystem. CI/CD Mindset: Demonstrated ability to support frequent, automated production releases. API Development: Extensive hands-on experience building and deploying RESTful APIs. Database Skills: Strong proficiency in schema design and querying within PostgreSQL databases. Languages: Full professional English proficiency (the sole project language). Nice to Have Solid experience with Java , preferably using recent versions of the language. Practical familiarity with frontend development using ReactJS . Understanding of cloud-native systems, containerization, and orchestration technologies ( Docker, Kubernetes, and GCP ). Prior domain experience working within the financial or fintech/banking sector. Polish B2+

🏢 Summary: Full-time remote contract for a Drupal Full Stack Developer to build and optimize web applications across backend and frontend layers. The role involves developing custom Drupal modules and themes, integrating APIs, and ensuring high performance and clean architecture. Engagement is for 2–3 months with strong potential for extension. 🗂️ Requirements: Commercial experience with PHP, Strong knowledge of OOP principles, Hands-on experience with Drupal architecture, Experience with custom Drupal modules and themes, Practical knowledge of JavaScript, Knowledge of HTML5 and CSS3/SASS, Experience with responsive design, Familiarity with MySQL or MariaDB, Experience with Drush and Composer, Experience with Git workflows, Experience with RESTful APIs or GraphQL 📃 Skills: PHP, OOP, Drupal, JavaScript, HTML5, CSS3, SASS, MySQL, MariaDB, Drush, Composer, Git, REST, GraphQL, Twig 🏢 Description: co.brick talents — powered by AI, powered by people. Join our client as a Drupal Full Stack Developer to drive the backend and frontend development of web applications. You will be responsible for creating robust PHP architectures, designing custom Drupal modules, and implementing responsive user interfaces. This role requires an engineer who can manage the entire development lifecycle, ensuring high performance, clean code, and seamless integration between backend data structures and frontend presentation layers. Details Role: Drupal Full Stack Developer Allocation: Full-time Work Model: 100% Remote Duration: 2–3 months with a strong possibility of extension Rate: 100 – 120 PLN / h Responsibilities Full-Stack Development: Write clean, well-designed PHP code and manage both backend logic and frontend templates within the Drupal ecosystem. Module & Theme Customization: Create and configure custom Drupal modules, hooks, and twig-based themes to match specific business requirements. API Integration: Design and consume RESTful APIs or GraphQL endpoints to facilitate headless or traditional monolithic setups. Performance Optimization: Diagnose and resolve database bottlenecks, caching issues, and frontend rendering speeds to ensure high application availability. Code Quality: Participate in peer code reviews, maintain version control workflows (Git), and follow Drupal coding standards. Requirements Core Language: Proficient commercial experience with PHP and object-oriented programming (OOP) principles. CMS Expertise: Strong hands-on experience with Drupal architecture, backend configurations, and frontend site-building. Frontend Tech: Practical knowledge of JavaScript, HTML5, CSS3/SASS, and responsive design methodologies. Database & Tooling: Familiarity with relational databases (MySQL/MariaDB), Drush, Composer, and Git workflows. Communication: Ability to work effectively in a remote team setup.

🏢 Summary: Senior Fullstack Engineer role focused on delivering full-stack solutions within an AI-integrated SDLC where AI is embedded across planning, development, review, testing, and deployment. The position combines backend and frontend engineering with AI orchestration, automation, and cloud-native architecture in a remote-first setup. The engineer will also evolve shared AI toolchains and contribute to architectural and code quality standards. 🗂️ Requirements: Team-level AI-integrated SDLC experience across planning, development, review, testing, deployment, Shared AI toolchain management under version control, Hands-on use of Claude Code, GitHub Copilot, Cursor or equivalent as team tools, Building and maintaining custom AI skills and sub-agents for team use, Experience with parallel AI agent orchestration, Spec-driven development using OpenAPI, ADRs, PRDs as AI context, AI-assisted code review integrated into PR process, Working knowledge of AI orchestration frameworks, Backend development with .NET / C# and ASP.NET Core, Frontend development with TypeScript and React or Angular, Experience with SQL databases and ORM frameworks, Experience with Docker and Kubernetes, Experience with CI/CD pipelines, Experience with cloud platforms (Azure, AWS, or GCP) 📃 Skills: C#, .NET, ASP.NET, SQL, SQLServer, PostgreSQL, EFCore, OAuth, JWT, Python, Java, Node.js, TypeScript, JavaScript, React, Angular, LangChain, LlamaIndex, CrewAI, Docker, Kubernetes, GitHubActions, AzureDevOps, Azure, AWS, GCP, OpenAPI, CQRS, DDD, EventSourcing, Microservices 🏢 Description: We are looking for a Senior Fullstack Engineer who combines deep technical expertise with real, team-level experience working in an AI-integrated software development lifecycle. Individual use of AI coding assistants is not sufficient for this role. We are specifically looking for engineers who have worked in teams where AI was embedded into every phase of delivery — from planning and design through development, review, testing, and deployment. We follow a remote-first setup with no mandatory regular office visits for this position. From time to time, you may be invited to join in-person meetings in one of our offices (Warsaw, Lodz, Wroclaw, Gdansk, or Bialystok), for example for client visits or team reunions. AI-First Requirements Experience working in an AI-enabled engineering team is mandatory — not a personal workflow preference. You have been part of a team where AI was systematically embedded across all delivery phases: planning, development, review, testing, and deployment. You can speak from direct experience about how it worked, what failed, and what you would change. Specific mandatory requirements: Team-level AI-integrated SDLC experience — shared toolchain, shared configurations, shared assets under version control Hands-on with Claude Code, GitHub Copilot, Cursor, or equivalent as a team tool, not only personal usage Built and maintained custom skills and sub-agents used across a team, not just personally Experience with parallel agent orchestration for concurrent workstream execution Disciplined plan → review plan → execute approach with AI involved at every phase Maintained shared prompt libraries, skill repositories, or agent configurations in version control AI-assisted code review integrated into the PR process: CodeRabbit, Copilot review, or similar Experience with spec-driven or document-driven development where structured specifications (OpenAPI, ADRs, PRDs) serve as AI context inputs, not just human references Working knowledge of at least one AI orchestration framework: LangChain, LlamaIndex, Microsoft Agent Framework, CrewAI, or equivalent Automation-first mindset: proactively identify repetitive or inefficient parts of current work and automate them using AI and other available tools. Cost-aware AI usage: understanding how AI credits are consumed across different tools, models, and workflows, and ability to choose the most appropriate model or approach for each task. Technical Requirements Backend: .NET / C#, ASP.NET Core, SQL Server / PostgreSQL, EF Core, OAuth 2.0 / JWT. Python, Java, or Node.js is a strong plus. Frontend: TypeScript, JavaScript, React(preferable) and/or Angular, state management, async patterns, frontend testing. Architecture: Full spectrum from monolith to microservices — DDD, CQRS, Event Sourcing, event-driven design, message brokers. Infrastructure: Docker, Kubernetes, CI/CD (GitHub Actions / Azure DevOps), Azure / AWS / GCP, structured observability. Responsibilities Deliver full-stack features to a high standard of quality, performance, and reliability Contribute to architectural decisions and system design trade-offs Evolve and maintain the team's shared AI toolchain across all SDLC phases Conduct code reviews including AI-assisted tooling; uphold and enforce engineering best practices Proactively surface risks, bottlenecks, and security concerns Communicate and collaborate directly with clients in English Mentor engineers on both technical fundamentals and AI-augmented workflow practices Professional Qualities Ownership mindset · Strong written and verbal English · Comfortable in client-facing roles · Raises the AI workflow maturity of those around them

🏢 Summary: Remote-first AI-First Fullstack Engineer role focused on building and maintaining full-stack applications while deeply integrating AI tools into the development workflow. The position emphasizes advanced use of AI coding assistants, agent-based workflows, and structured AI planning alongside strong backend and frontend engineering skills. Engineers contribute to architecture, code quality, and continuous improvement of AI-augmented practices. 🗂️ Requirements: 3+ years commercial experience with .NET and C#, Experience building REST APIs, middleware, and authentication flows (OAuth 2.0, OpenID Connect, JWT), Hands-on experience with AI coding assistants (Claude Code, GitHub Copilot, Cursor or equivalent), Understanding of AI agents and sub-agents and their composition, Experience creating or using custom AI skill definitions, Familiarity with AI planning workflows for structured implementation plans, Ability to perform prompt engineering and critically evaluate AI outputs, Experience configuring project-level AI instructions (e.g., copilot-instructions.md, CLAUDE.md), Solid proficiency in JavaScript and TypeScript, Practical experience with React or Angular, Experience with SQL databases and ORMs, Knowledge of CI/CD pipelines, Experience with Docker, Fluent English communication for technical collaboration 📃 Skills: .NET, C#, REST, OAuth2, OpenID, JWT, SQL, ORM, NoSQL, JavaScript, TypeScript, React, Angular, Python, Java, Node.js, Docker, Kubernetes, GitHubActions, AzureDevOps, Azure, AWS, GCP, CI/CD, DDD, CQRS 🏢 Description: We are looking for an AI-First Fullstack Engineer who is actively building a real AI-augmented development practice — not just using autocomplete. You will work across varied client engagements, contribute to meaningful technical decisions, and be expected to grow quickly in an environment that takes AI tooling seriously. This is a role for engineers who are intentional about how they use AI and want to develop that skill alongside their core technical craft. We follow a remote-first setup with no mandatory regular office visits for this position. From time to time, you may be invited to join in-person meetings in one of our offices (Warsaw, Lodz, Wroclaw, Gdansk, or Bialystok), for example for client visits or team reunions. Responsibilities Develop and maintain full-stack features with attention to quality, performance, and reliability Apply AI tools actively throughout your workflow: generation, refactoring, review, testing, and research Participate in architectural and design discussions — contribute ideas, ask good questions, and learn from senior engineers Write clean, reviewable code and actively engage in code reviews Communicate clearly with the team and client stakeholders in English Flag risks, blockers, and technical concerns early Continuously refine your AI workflow and share learnings with the team AI-First Requirements Must have: Hands-on experience with Claude Code, GitHub Copilot, Cursor, or equivalent AI coding assistants Understanding of agents and sub-agents: what they are, how they are composed, and when to use them Experience with custom skills: creating or using reusable AI skill definitions that extend tool capabilities beyond defaults Familiarity with AI planning workflows: using AI to generate structured implementation plans (e.g. task breakdowns, step-by-step plans stored as files or tickets) before generating code Prompt engineering sufficient to produce reliable, high-quality output; ability to critically evaluate and override AI suggestions when needed Experience building or configuring project-level AI instructions (e.g. copilot-instructions.md , CLAUDE.md , or similar) to shape agent behavior at the repo level Nice to have: Awareness of how AI tools fit into different SDLC phases: requirements analysis, design, implementation, code review, testing, and documentation — not just code generation Practical experience orchestrating multiple AI agents in parallel for concurrent task execution Familiarity with agentic loop patterns: tool use, reflection, iterative self-correction Technical Requirements 3+ years of commercial experience with .NET / C# — REST APIs, middleware, dependency injection, authentication flows: OAuth 2.0, OpenID Connect, JWT SQL databases and ORMs; NoSQL familiarity is a plus Additional experience in Python, Java, or Node.js is a plus Solid proficiency in JavaScript and TypeScript Practical experience with React (preferable) and/or Angular Familiarity with state management, async patterns, and frontend testing basics Comfortable working on both monolithic and service-oriented codebases Awareness of DDD, CQRS concepts (hands-on experience is a plus, not required) Basic familiarity with message-driven or event-driven patterns Docker fundamentals; basic Kubernetes awareness is a plus CI/CD: GitHub Actions, Azure DevOps, or similar Cloud exposure: Azure, AWS, or GCP Basic observability: structured logging, understanding of tracing concepts Salary ranges B2B 110 - 136 PLN/ hour EC 14500 - 17800 PLN/ month

🏢 Summary: Senior Full Stack Developer role focused on building AI-driven solutions for Global Markets using NLP technologies. The position involves designing and delivering scalable microservices-based systems in a hybrid work model while contributing across the full software development lifecycle. You will work in a small agile team to create robust digital products for institutional banking. 🗂️ Requirements: Minimum 5 years software development experience, Strong knowledge of SOLID, Clean Code, DDD, BDD, Proven experience with Java and Python, Hands-on experience with Spring Framework, Experience with SQL and NoSQL databases, Experience with PostgreSQL and MongoDB, Experience with microservices architecture, Experience with event streaming technologies, Fluent English, Legal right to work in Europe 📃 Skills: Java, Python, Spring, SQL, NoSQL, PostgreSQL, MongoDB, Microservices, EventStreaming, JavaScript, Vue, NLP, AI, MachineLearning, LangChain, LangGraph 🏢 Description: Ignite innovation at the forefront of financial technology — design and develop transformative AI-driven solutions. Krakow-based opportunity with hybrid work model (up to 3 remote days per week). As a Senior Full Stack Developer , you will be working for our client, a leader in Global Markets Technology within the Corporate and Institutional Banking sector. You will be part of an award-winning AI Markets team, leveraging natural language processing (NLP) to revolutionize how institutional investors interact with global markets. This role offers a unique opportunity to contribute to cutting-edge digital services that shape the future of financial technology and accelerate your career growth. Your main responsibilities: Collaborate within a team of 4-6 engineers alongside a dedicated product owner to deliver high-quality features. Break down business requirements into user stories and execute iterative deliveries to production. Engage in all phases of the development lifecycle, including analysis, testing, and production support. Maintain a focus on product support, ensuring solutions are sustainable and robust. Identify areas of technical debt and balance new functionality development. Design scalable, efficient solutions following established technology guidelines. Pair with team members to share knowledge and develop innovative system architectures. You're ideal for this role if you have: At least 5 years of extensive development experience in software engineering. Deep understanding of software development principles (SOLID, Clean Code, DDD, BDD). Demonstrable expertise in Java and Python. Extensive experience with Spring Framework. Proficiency with SQL and NoSQL databases (PostgreSQL, MongoDB). Prior experience with event streaming technology and microservices architecture. Ability to collaborate and teach engineering teams to develop new systems. Effective written and spoken communication skills in English, fluent level. It is a strong plus if you have: JavaScript / Vue.js experience. Knowledge or experience in machine learning, NLP, AI, data science, or prompt engineering. Familiarity with LangChain, LangGraph, and Clean Architecture principles. Language required for the role: Fluent command of English, both written and spoken. Eligibility to work in this 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.

🏢 Summary: Senior AI-first Engineer role focused on building and modernizing full-stack systems using advanced AI-assisted development workflows. The position involves designing scalable architectures, delivering production-grade .NET and React solutions, and orchestrating multiple AI agents for parallel task execution. Work spans distributed systems, cloud environments, and high-quality engineering practices in client-facing projects. 🗂️ Requirements: Hands-on experience with AI coding assistants (Claude Code, GitHub Copilot, Cursor or equivalent), Ability to build custom AI skills and orchestrate multiple AI agents in parallel, Strong prompt engineering with critical evaluation of AI-generated output, Production experience with .NET and C# for REST APIs and middleware, Deep knowledge of OAuth2, OpenIDConnect, and JWT, Strong proficiency in JavaScript and TypeScript, Minimum 2 years production experience with React, Experience with state management, asynchronous patterns, and frontend testing, Experience designing monolith, microservices, and distributed architectures, Knowledge of DDD, CQRS, EventSourcing, and event-driven systems, Experience with message brokers (Kafka, RabbitMQ, AzureServiceBus or similar), Hands-on experience with Docker and knowledge of Kubernetes, Experience with CI/CD pipelines, Experience with cloud platforms (Azure, AWS, or GCP), Strong knowledge of SQL and ORM tools 📃 Skills: C#, .NET, REST, OAuth2, OpenIDConnect, JWT, JavaScript, TypeScript, React, DDD, CQRS, EventSourcing, Kafka, RabbitMQ, AzureServiceBus, Docker, Kubernetes, GitHubActions, AzureDevOps, Azure, AWS, GCP, SQL, NoSQL, Python, Java, Node.js, Copilot, Claude, Cursor 🏢 Description: We are looking for a Senior AI-first Engineer who combines deep technical expertise with a genuine, hands-on approach to AI-assisted development. You will work across varied client engagements — from modernizing legacy systems to architecting new products — and are expected to contribute at a high level regardless of project context. The ideal candidate has built a real, personalized AI development workflow — including custom skills, reusable prompt templates, and project-level instructions — and continues to refine it. Out-of-the-box tool usage is not sufficient for this role. We follow a remote-first setup with no mandatory regular office visits for this position. From time to time, you may be invited to join in-person meetings in one of our offices (Warsaw, Lodz, Wroclaw, Gdansk, or Bialystok), for example for client visits or team reunions. Responsibilities Design, develop, and maintain full-stack features with high standards of quality, performance, and reliability Apply AI tools throughout the workflow: generation, refactoring, review, testing, and research Contribute to architectural decisions — technology selection, system design, and trade-off analysis Conduct thorough code reviews and uphold engineering best practices across the team Identify risks, bottlenecks, and security concerns proactively and propose solutions Work directly with clients in English — requirements clarification, technical discussions, progress updates Mentor junior and mid-level engineers through day-to-day guidance and knowledge sharing Stay current with AI tooling developments and contribute findings to the broader team Requirements Hands-on experience with Claude Code, GitHub Copilot, Cursor, or equivalent AI coding assistants Ability to create custom skills and sub-agents and orchestrate multiple AI agents in parallel for concurrent task execution Strong prompt engineering skills; able to produce reliable, high-quality output and critically evaluate AI-generated results Production-grade .NET / C# (REST APIs, middleware, dependency injection) with solid understanding of OAuth 2.0, OpenID Connect, and JWT Deep proficiency in JavaScript and TypeScript 2+ years of hands-on production experience with React (highly preferable) and/or Angular Strong grasp of state management, asynchronous patterns, and frontend testing Confident designing systems across monoliths, microservices, and distributed architectures Working knowledge of DDD, CQRS, Event Sourcing, and event-driven systems, including message brokers (Kafka, RabbitMQ, Azure Service Bus, or similar) Hands-on use of Docker and working knowledge of Kubernetes, along with CI/CD pipelines (GitHub Actions, Azure DevOps, or similar) Experience with cloud platforms (Azure, AWS, or GCP) and observability practices (structured logging, distributed tracing, alerting) Solid background with SQL databases and ORMs; familiarity with NoSQL is a plus Additional exposure to Python, Java, or Node.js is highly desirable Clear communication skills in English (B2+), both written and spoken; comfortable in client-facing environments Salary ranges B2B 135 - 195 PLN/ hour EC 17000 - 24000 PLN/ month

🏢 Summary: Contract opportunity for a Fullstack Developer to design and deliver web applications using modern Python and JavaScript frameworks, with a focus on AI-driven solutions. The role involves building and maintaining backend services, developing responsive frontend interfaces, and deploying applications in a cloud environment. Onsite presence is required in the Greater Copenhagen Area with a hybrid setup. 🗂️ Requirements: Strong backend development experience with Python, Experience with FastAPI, SQLAlchemy, Alembic, Proficiency in JavaScript and TypeScript, Experience with React and NextJS, Experience with PostgreSQL, Knowledge of Qdrant or other vector databases, Experience with Azure cloud platform, Experience with Docker containerization, Ability to develop and maintain fullstack web applications, Availability to work onsite minimum 3 days per week 📃 Skills: Python, FastAPI, SQLAlchemy, Alembic, JavaScript, TypeScript, React, NextJS, PostgreSQL, Qdrant, Azure, Docker, LLM, LangChain, LangGraph 🏢 Description: Introduction & Summary We are seeking a highly skilled Fullstack Developer. The ideal candidate will possess extensive experience in backend and frontend development, with proficiency in Python and JavaScript frameworks. If you have a passion for developing innovative solutions and a keen interest in AI technologies. Main Responsibilities As a Fullstack Developer, you will be responsible for designing and implementing web applications and services. Your focus will be on enhancing user experiences through effective software solutions. Develop and maintain backend services using Python with FastAPI. Implement frontend solutions utilizing React / NextJS. Work with PostgreSQL (Relational) and Qdrant (Vector) databases. Utilize Azure and Docker for deploying applications. Collaborate with cross-functional teams to define, design, and ship new features. Ensure code quality and maintainability throughout the development process. Debug and optimize existing applications. Key Requirements Strong experience in backend development using Python (FastAPI, SQLAlchemy, Alembic). Proficient in frontend technologies, specifically Javascript/Typescript with React / NextJS. Experience with relational databases, particularly PostgreSQL. Knowledge of vector databases like Qdrant. Familiarity with cloud platforms such as Azure. Experience with Docker for containerization. Experience with LLM / AI technologies is a plus. Bonus: Familiarity with LangGraph / LangChain for Python. Nice to Have Previous experience with AI-driven applications. Understanding of software design patterns and best practices. Experience in agile development methodologies. Start: ASAP End: End of September 2026 Location: Greater Copenhagen Area Onsite/remote: min. 3 days onsite per week

🏢 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: In Cyclad we work with top international IT companies in order to boost their potential in delivering outstanding, cutting-edge technologies that shape the world of the future. 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 information: Type of project: IT services Office location: Wrocław, Poland Work mode: Remote from Poland Budget: 130-160 PLN net/ h- b2b Project length: Long-term Only candidates with citizenship in the European Union and residence in Poland Start date: ASAP (depending on candidate’s availability) 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 real-world 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 and ability to work in a distributed team Fluency in English (written and spoken) We offer: Remote working model Dynamic and innovation-driven engineering environment Full-time job agreement based on b2b 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: Senior Full Stack Engineer role focused on building and owning end-to-end product features for an AI-driven platform that automates complex business processes. The position involves developing frontend and backend solutions, designing APIs, improving performance and usability, and leveraging AI tools in daily engineering work. The role is office-based in Warsaw and requires strong product thinking and production-level experience. 🗂️ Requirements: Senior-level experience building production web applications, Strong knowledge of React and TypeScript or similar frontend framework, Experience designing and developing backend APIs and application logic, Ability to build and maintain frontend and backend features end-to-end, Experience working with production environments and monitoring released features, Daily use of AI tools for development and problem-solving, Strong understanding of code quality, testing, and long-term ownership 📃 Skills: React, TypeScript, JavaScript, API, REST, Node.js, Python, GitHub, Copilot, Claude, OpenAI, Codex, TypingMind, MCP, AI 🏢 Description: About Us Many companies want to use AI agents, but these agents often have problems with complex business tasks. We help solve this issue. Our platform understands company rules, processes, and workflows, so AI can make better decisions instead of only giving simple answers. This allows businesses to use AI that is accurate, follows company policies, and can be trusted. Well-known companies use our technology to automate up to 85% of customer cases, reduce handling time by 20–25%, and complete tasks that used to take hours in just a few seconds. We work with leading technology partners and have received industry recognition for our innovative approach. Our mission is to give people better answers everywhere. About the Role We are looking for a Senior Full Stack Engineer with strong product thinking. In this role, you will own features from start to finish. You will understand user needs, plan solutions, build frontend and backend functionality, release new features, and improve them based on user feedback. You should feel comfortable working on user interfaces, APIs, and production quality while collaborating with product and design teams. Location: Warsaw (office-based). Responsibilities Build and deliver product features across both frontend and backend. Turn product ideas into practical and effective solutions. Work with user interfaces, business logic, APIs, and data flows. Cooperate closely with product managers and designers, even when requirements are still developing. Improve usability, performance, reliability, and overall user experience. Monitor released features and use production data to make improvements. Use AI tools every day to work faster and improve engineering processes. Maintain high standards for code quality, testing, and long-term ownership. Requirements Strong experience as a senior engineer building production web applications. Good knowledge of React, TypeScript, or a similar modern frontend framework. Experience designing and developing backend APIs and application logic. Strong product mindset with the ability to identify and improve weak user experiences. Good decision-making skills when balancing scope, speed, and technical quality. Clear communication and teamwork across engineering, product, and design. Daily experience using AI tools for development and problem-solving. Nice to Have Experience building AI-powered products such as chat, search, recommendation systems, workflows, or AI agents. Knowledge of Python, Node.js, or both. Experience owning product areas independently. Understanding of performance optimization, accessibility, and high-quality web applications. What We Offer B2B contract and company stock options. MacBook Pro for work. Modern technology stack with opportunities to contribute to open-source projects. Advanced AI development tools, including GitHub Copilot, Claude Code, OpenAI Codex, TypingMind, and MCP Servers. Why Join Us Our leadership team has strong experience in knowledge management and AI. We have raised more than $60 million in funding and achieved three years of continuous 3x growth. Our work is guided by these core values: Quality: We aim for excellent craftsmanship and high standards in everything we build. Momentum: We take initiative and keep projects moving forward. Accountability: We take responsibility, give honest feedback, and support each other. Hard Work: We believe difficult goals require dedication and teamwork. Learning Agility: We stay curious, learn from mistakes, and keep improving. Adapt and Thrive: We accept change and see challenges as opportunities. Win Together: We succeed as a team through honesty, openness, and shared commitment.

🏢 Summary: Full Stack Developer role within an AI-driven financial markets team, focused on building and supporting NLP-based tools for real-time market data access. The position involves end-to-end development in Java and Python within a microservices architecture, following a "build it, support it" approach. Hybrid work model in Kraków with strong emphasis on scalable, high-performance solutions. 🗂️ Requirements: Minimum 4 years full stack development experience, Strong experience with Java and Spring Framework, Proven experience with Python, Knowledge of SQL and NoSQL databases, Experience with PostgreSQL and MongoDB, Understanding of microservices architecture, Knowledge of SOLID and Clean Code principles, Familiarity with DDD and BDD, Experience in financial or data-driven systems, Fluent English, Legal right to work in the EU 📃 Skills: Java, Python, Spring, SQL, PostgreSQL, MongoDB, Microservices, NLP, AI, ML, LangChain, LangGraph, JavaScript, Vue, React, DDD, BDD, SOLID, CleanCode, EventStreaming, PromptEngineering, CleanArchitecture 🏢 Description: Ignite innovation through full-stack development — craft solutions that reshape financial markets with cutting-edge technology. Kraków-based opportunity with hybrid work model (up to 3 remote days per week). As a Full Stack Developer , you will be working for our client, a leading player in the financial technology sector, within the AI Markets team. You will contribute to developing and supporting transformative natural language processing tools that revolutionize how institutional investors access real-time global markets data, enabling faster, smarter financial decisions. This role offers a unique chance to be at the forefront of AI-driven innovation in a dynamic, fast-paced environment that values continuous learning and mobility. Your main responsibilities: Collaborate within a small, agile team of 4-6 members to deliver high-quality features iteratively from requirements to production. Take business requirements, break them into user stories, and implement solutions using Java and Python in an efficient, scalable manner. Participate in all phases of the development lifecycle, including analysis, testing, deployment, and production support, embodying the “build it, support it” philosophy. Identify and address technical debt, ensuring a sustainable balance between new development and system health. Design solutions aligned with technology standards, guidelines, and constraints while focusing on optimal performance and security. Pair with team members to share expertise, review code, and foster continuous improvement. You're ideal for this role if you have: Minimum 4 years of experience in full stack development, ideally within financial or data-driven environments. Deep understanding of software development principles such as SOLID, Clean Code, DDD, and BDD. Proven experience with Java (especially Spring Framework) and Python. Solid knowledge of SQL/NoSQL databases, including PostgreSQL and MongoDB. Familiarity with microservices architecture and event streaming technologies is a plus. Experience with machine learning, NLP, AI, or Data Science is advantageous. Excellent communication skills in fluent English, both oral and written. Ability to work effectively in a hybrid environment and adapt to cross-geography collaboration. It is a strong plus if you have: Experience with Prompt Engineering, LangChain, LangGraph, or Clean Architecture. Prior exposure to front-end platforms such as JavaScript, Vue, or React. Language Required for the role: Fluent English (oral and written) Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. We offer you: ITDS Business Consultants is involved in various, innovative, and professional IT projects for international companies in the financial industry in Europe. We offer an environment for professional, ambitious, and driven people. The offer includes: Stable and long-term cooperation with very good conditions Enhance your skills and develop your expertise in the financial industry Work on the most strategic projects available in the market Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years Participation in Social Events, training, and work in an international environment Access to an attractive Medical Package Access to Multisport Program #GETREADY Internal job ID #8882 You can report violations in accordance with ITDS’s Whistleblower Procedure available here .