Senior Backend Engineer (Python) — m/f/d

We're a fast-growing product company building an AI-powered platform used by thousands of teams every day. We're looking for a Senior Backend Engineer to own critical services end-to-end — from design to production — and help us scale to the next order of magnitude. You'll join a small, senior team where your decisions have real impact. Tasks - Design, build and operate scalable backend services (Python / FastAPI) and REST APIs. - Model and optimize PostgreSQL schemas; write efficient async queries. - Own services end-to-end: architecture, implementation, testing, deployment and monitoring. - Integrate third-party APIs and internal microservices behind a gateway. - Improve reliability, performance and security under high concurrency. - Collaborate with product and frontend to ship features that matter. - Mentor mid-level engineers and raise the bar on code quality. Requirements - 5+ years building production backend systems in Python. - Strong experience with FastAPI (or Flask/Django) and async programming. - Solid PostgreSQL skills: schema design, indexing, query optimization. - Experience designing and scaling REST APIs and microservices. - Comfortable with Docker, CI/CD and cloud (AWS preferred). - Good understanding of auth (JWT/OAuth), caching and message queues. - Clear written and spoken English; pragmatic, ownership mindset. Nice to have: Kubernetes, SQLAlchemy, observability (Prometheus/Grafana), LLM/AI integrations Benefits - Competitive salary + equity. - Remote-friendly with flexible hours. - Top-tier hardware and a yearly learning budget. - 30 days paid vacation. - Small senior team, real ownership, fast decisions. Skills: Python, FastAPI, PostgreSQL, Docker, AWS, REST APIs, Microservices, SQLAlchemy, CI/CD, Redis If you like owning hard problems and shipping reliable systems at scale, we'd love to talk. The process is quick: a short AI video interview, then a technical conversation with the team. Apply today. Find more English Speaking Jobs in Germany on Arbeitnow