Mid-level Python Software Engineer

Sonia

full-time

Posted on: 9/2/2025

Location: 🇩🇪 Germany

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Mid-LevelSenior

DjangoDockerFlaskKafkaKubernetesNoSQLPythonRabbitMQRedisTypeScript

About the role

With Sonia, doctors are successful doctors; we create and deploy AI-enhanced solutions that make doctors’ lives easier and healthcare systems more efficient
Help build scalable, reliable backend services and APIs for AI-driven products
Develop and maintain scalable backend services using Python 3 (with async and strong typing)
Design and implement RESTful APIs and real-time communication via WebSockets
Write clean, maintainable, and well-tested code; debug and troubleshoot production issues to ensure reliability and performance
Work with containerization (Docker) and contribute to CI/CD pipeline improvements
Collaborate with cross-functional teams to integrate APIs and backend systems with ML services
Proactively bring ideas for improving architecture, automation, and processes

3+ years of professional experience in software development with Python 3
Strong knowledge of asynchronous programming and type hinting in Python
Experience with at least one web framework (FastAPI, Django, or Flask)
Proven experience in building and consuming RESTful APIs
Working experience with real-time communication using WebSockets (Socket.IO, FastAPI WebSockets, etc.)
Familiarity with version control systems (Git, GitLab, Bitbucket)
Practical knowledge of testing frameworks and debugging in production environments
Experience with containerization (Docker) and basic CI/CD concepts
Solid understanding of software engineering principles, design patterns, and clean code practices
Nice-to-haves: Experience working with LLMs (routing, parsing, error handling, guardrails)
Nice-to-haves: Knowledge of message brokers (RabbitMQ, Kafka, Redis Pub/Sub)
Nice-to-haves: Exposure to NoSQL databases (Redis)
Nice-to-haves: Familiarity with DevOps tools or Kubernetes environments
Nice-to-haves: Contributions to open-source projects