Python GenAI Developer

About the role

MADIFF Polska is looking for an experienced AI Engineer (Python Backend) to build backend systems for GenAI-powered applications used by leading US clients in banking, fintech and payments. The projects cover intelligent automation tools, data-driven decision engines and secure AI integrations for enterprise environments. The contract is full time.

Key responsibilities

• Design and develop backend microservices in Python (Django, Flask or FastAPI) for GenAI applications and internal automation platforms.
• Integrate with LLM APIs (OpenAI, Anthropic) and build RAG pipelines using vector databases such as Pinecone or Chroma.
• Develop AI workflow orchestration, including prompt routing, retrieval logic, tool execution, memory handling and multi-agent collaboration with LangChain and LangGraph.
• Build APIs and backend modules connecting to financial systems, credit decision engines and customer experience platforms.
• Manage structured and unstructured data pipelines, integrating with PostgreSQL, MongoDB and data lakes.
• Deploy and maintain services with Docker and cloud environments (Azure or AWS), ensuring scalability, performance and security compliance.
• Collaborate with cross-functional teams in the US and Europe, including frontend, DevOps and data science units.

Required profile

• 3-4+ years of backend experience with Python (Django, Flask or FastAPI).
• 1-2+ years working with GenAI, LLM APIs or vector database architectures.
• Strong experience with Docker, Git, CI/CD and cloud services (Azure or AWS or GCP).
• Understanding of prompt optimisation, token management and AI system integration.
• B2+ English and ability to work with global engineering teams; enterprise or banking experience is an advantage.

Required skills

• Python (Django, Flask, FastAPI)
• LangChain, LangGraph, embeddings and retrieval frameworks
• Docker, Git, CI/CD
• Azure, AWS or GCP
• PostgreSQL, MongoDB, Pinecone, Chroma

What we offer

• Competitive daily rate.
• International GenAI projects for top-tier US clients.
• Dynamic, multilingual work environment and access to advanced AI infrastructure.
• Private medical care and long-term project engagement.