Senior Python Software Engineer (all)

Let me introduce...

With Sonia, doctors are successful doctors. We create and deploy AI-enhanced solutions that make doctors’ lives easier, patients’ care better, and healthcare systems more efficient. If you’re an intrinsically motivated self-starter who values impactful work, join us in revolutionizing healthcare.

We’re looking for a Senior Python Software Engineer (all) to take ownership of critical backend components in our AI-driven products. You’ll design and implement scalable architectures, mentor others, and ensure our systems are robust, reliable, and future-proof. Partnering closely with engineering and ML teams, you’ll build APIs and services that enable real-time communication, data processing, and automation at scale—always with clean, maintainable, and high-performing code.

This role can be performed in a hybrid setup from our offices in Luxembourg or Berlin , or remotely from anywhere in Germany or Luxembourg .

This is what you’ll own

• Backend Development : Design, development, and maintenance of scalable backend services using Python 3 (async, type hinting).
• API Architecture : Architect and implement RESTful APIs and real-time communication via WebSockets.
• Technical Leadership : Drive technical discussions and decisions, shaping backend architecture and coding standards.
• Production Reliability : Debug and troubleshoot production issues, ensuring resilience, performance, and security.
• DevOps : Advance our CI / CD pipeline and containerized deployments (Docker).
• AI / ML Integration : Collaborate with ML engineers to integrate APIs and backend systems with AI / ML services.
• Mentorship & Quality : Mentor and support other developers, fostering best practices in engineering, testing, and documentation.
• Continuous Improvement : Continuously identify opportunities for technical and process improvements.

You’ll thrive in this role if you bring

Must Haves

Nice to Have

Why you’ll love working with us

Ready to apply?

If you’re passionate about backend engineering and want to make an impact in healthcare with cutting-edge AI technologies, we’d love to hear from you!

I’m Margarita and will be guiding you through the application process.

About us

At Sonia, we’re building more than just a product — we’re building a team that helps doctors succeed with the power of AI. To grow and shape the future of healthcare, we’re looking for people who want to create, challenge, and collaborate — and have fun while doing it.

We believe teams thrive when different perspectives come together and work toward a shared goal. We welcome and respect everyone for who they are, regardless of origin, gender, age, religion, disability, or sexual identity. We’re excited to meet people from all backgrounds who want to bring their unique perspective to our mission.

Are you in?