Full Stack Developer (.NET / React / AI - remote B2B

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Description

We are looking for an experienced Full Stack Developer (.NET / React) who has real, hands-on experience building AI-powered solutions or features . We are specifically looking for developers who have gone beyond simply using GitHub Copilot or other AI coding assistants . You should have actually designed, developed, integrated, or deployed AI functionality within a commercial application or product . Location: Remote – Poland Language: Polish and English Start: September 2026 Contract: 12 months Interview process: 1 interview only Key Responsibilities Design and develop full-stack applications using C# / .NET and React . Build scalable backend services, REST APIs and integrations. Design and implement AI-powered features as part of real applications or products. Integrate applications with LLMs and AI services such as Azure OpenAI, OpenAI or similar platforms. Work with technologies and concepts such as RAG, AI Agents, prompt orchestration, vector search, embeddings or intelligent automation , depending on the use case. Take AI solutions from idea/prototype through integration and production implementation . Work closely with architects, product owners and engineering teams. Required Skills 5+ years of commercial C# / .NET experience. Strong hands-on experience with React and TypeScript . Experience developing REST APIs, backend services and/or microservices . Azure or another major cloud platform. Git, CI/CD and modern software engineering practices. Strong Polish and Englis

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