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November 3, 2026

Full Stack Developer (AI Products)

Mid • On-site

Warsaw, Poland

Quick Facts

  • Role: Full Stack Developer (AI Products)

  • Focus: End-to-end GenAI and agentic AI features (UI, APIs, LLMs, RAG, agents)

Description

Build GenAI and agentic AI product solutions end-to-end—from the React interface and backend APIs to LLM services, RAG pipelines, and agents. Implement AI-native capabilities such as streaming responses, real-time agent status, citation rendering, and resilient handling of AI uncertainty. Deploy to cloud environments and evaluate outputs to reduce hallucinations and edge-case failures before production.

Responsibilities

  • Build modern, responsive GenAI frontends with React and TypeScript

  • Develop backend services and APIs (Python/FastAPI or Node.js) connecting UI to LLM APIs and enterprise data sources

  • Implement streaming and real-time patterns (agent status, citations, uncertainty handling)

  • Contribute to RAG pipelines and agentic workflows (vector databases, tools, MCP servers)

  • Deploy and run solutions on AWS/Azure/GCP and evaluate AI outputs

  • Collaborate with GenAI engineers, designers, architects, and consultants on client teams

Benefits

  • Permanent employment contract

  • People Lead support and a defined professional development path (including coaching)

  • Comprehensive training package (technical, soft skills, language; e-learning; Gallup test; GenAI training; co-financing for courses/certifications)

  • Employee Assistance Program (legal, financial, psychological consultations)

  • Employee Share Purchase Plan (quarterly dividends)

  • Paid employee referral program

  • Private medical care and life insurance

  • Worksmile benefits platform access (including Multisport card)

Interview Note

Practical technical interview: solve and debug a real problem together using your preferred setup, including AI-assisted tools you use daily.

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