Senior Python Developer (FastAPI)

• 3+ years of dedicated, hands-on production experience building high-performance asynchronous web services with FastAPI and modern Python (3.10+). Deep mastery of Python's asyncio ecosystem, dependency injection, and Pydantic v2 data validation.
• 5+ years of total software engineering experience designing, deploying, and maintaining production-grade distributed systems and RESTful APIs.
• Solid proficiency with relational databases (PostgreSQL), writing optimized raw SQL or leveraging ORMs like SQLAlchemy and Alembic for schema migrations and query tuning. Caching layer experience with Redis is essential.
• Practical experience building decoupled services using message queues and event streaming platforms (e.g., RabbitMQ, Celery, or Apache Kafka).
• Strong daily proficiency with Docker, Kubernetes or AWS container services (ECS/EKS), and setting up CI/CD deployment pipelines (GitHub Actions, GitLab CI).
• Strict adherence to software design patterns, clean code principles, and comprehensive automated testing using pytest.
• Located in the CET timezone (+/- 3 hours), we are unable to consider applications from candidates in other time zones.

Nice-to-Have

• Experience with GraphQL or WebSocket integrations alongside standard REST protocols.
• Familiarity with vector databases (Pinecone, Milvus, Qdrant) or AI/LLM orchestration frameworks (LangChain, LlamaIndex) for AI-integrated backends.
• Experience migrating legacy Django or Flask monolithic architectures to decoupled FastAPI microservices.