python developer for AI websites

A European hosting provider is launching a B2B product at the MVP stage: a multi-agent LLM system that generates websites on demand.

• Build a multi-agent system with planner and code agents, designing communication between the agents and the LLM;
• Write and iterate on prompts and tool schemas, including handling messy JSON from the model;
• Build the backend with FastAPI, Celery, Redis, and PostgreSQL;
• Create and manage isolated Docker sandboxes for building and testing generated code;
• Implement recovery when builds or containers fail;
• Push real-time build progress to the frontend;
• Own end-to-end reliability through retries, idempotency, and graceful recovery from LLM, container, and network failures.

• Have 3 years of experience;
• Strong Python skills, including async/await, typing, and Pydantic;
• Strong FastAPI experience;
• Experience with Celery, Redis, and PostgreSQL;
• Use Docker and Git in daily work;
• English for reading documentation and APIs;
• Nice to have: Experience with LLM tool/function calling and structured output.

• Remote work in Ukraine; an office in Khmelnytskyi is optional;
• Paid vacation and sick leave;
• Real impact on product architecture from scratch;
• Modern stack and LLM tasks;
• B2B contract.