Spannende Gelegenheit als Senior Python Developer. Eine Rolle mit modernen Technologien.
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We are looking for a Senior Python Developer specializing in FastAPI on behalf of one of our high-growth clients to architect, build, and scale their core cloud-native backend services. In this role, you will take ownership of developing high-throughput, low-latency asynchronous APIs that power data-intensive platform features.You are a perfect candidate if you are growth-oriented, you love what you do, and you enjoy working on new ideas to develop exciting products.
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.
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.
Design, build, and document secure, high-concurrency microservices and RESTful endpoints using FastAPI and OpenAPI/Swagger standards.
Profile asynchronous bottlenecks, manage event loops, optimize database queries, and scale caching layers to maintain sub-millisecond response times under peak load.
Build robust communication channels between internal services and external partner APIs using webhooks, message brokers, and background workers (e.g., Celery).
Lead technical design discussions, establish testing benchmarks, and conduct thorough peer code reviews to ensure system reliability and security compliance.
Collaborate closely with DevOps teams to containerize applications, monitor cloud health metrics, and streamline automated release cycles.
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