Senior Fullstack Developer (m/w/x)

Your mission

ImFusion is an R&D consulting company based in Munich. Thanks to our expertise in image processing, computer vision, AI and robotics applied to medical imaging, we help our customers drive innovation in medical technologies.

We are looking for a Senior Fullstack Developer with a strong backend focus to push forward ImFusion’s web technologies. You will drive the technical direction of our cloud-based web applications built on top of ImFusion's existing technology platform.

In this role you will own the architecture of backend services, APIs, and cloud infrastructure while also contributing across the stack. You'll act as Tech Lead, mentoring developers, setting technical standards, and making key design decisions, while staying hands-on.

What you will do

• Act as technology leader of the team: drive architecture decisions, perform code reviews, and set engineering standards.
• Design, develop, and maintain backend services and APIs.
• Collaborate with frontend engineers to architect end-to-end web applications.
• Own the cloud deployment, monitoring, and operational reliability of services.
• Ensure code quality, testing, documentation, and DevOps best practices.
• Participate in cross-functional discussions with product managers and R&D engineers to shape the product roadmap.

While this position is based in our Munich office, remote or hybrid work arrangements may be possible within Germany and, where compatible with the role's responsibilities and legal requirements, also within the EU.

Your profile

Required qualifications

• 5+ years of professional experience in backend or fullstack web application development
  Strong proficiency in Python, ideally with FastAPI experience; other backend language (e.g. Java, Node.js, C#, Go, or similar) are also valued.
• Proven experience designing and building RESTful APIs at scale.
• Solid understanding of relational databases and data modeling (e.g. PostgreSQL)
• Professional experience with managing cloud platforms (AWS, GCP, or Azure) with Infrastructure as Code (Terraform).
• Experience with containerization and CI/CD workflows (Docker, GitHub Actions, GitLab CI, or similar)
• Strong communication skills and ability to work in a distributed, remote team

Nice to have

• Ability to lead or mentor a small engineering team
• Experience with Kubernetes or managed container platforms
• Experience with identity providers and authentication workflows (Keycloak, OAuth 2.0, OIDC, SAML)
• Experience with WebSockets or real-time communication patterns
• Familiarity with monitoring and observability tools (Prometheus, Grafana, Datadog, Sentry)
• Knowledge of frontend technologies (React, TypeScript)
• Experience operating production systems or participating in on-call rotations

Why us?

• Be part of an international, dynamic, and highly skilled team in flat hierarchies where you can both make an impact and continue to learn
• Contribute to our company values and do good for society by having your work enable actual medical products that improve patients’ lives
• Publish research that advances our mission and aligns with our core areas of expertise
• Earn a competitive salary and a comprehensive benefits package (such as bike leasing, sports programs, etc.)
• Enjoy the agility of a start-up paired with the safety of a grown company
• Benefit from flexible working hours, remote work and workation
• We celebrate success together with various team events (e.g. Summer Party or Oktoberfest)

About us

ImFusion GmbH is a growing company located in Munich, conducting research, development and consulting in advanced medical image computing technologies and computer vision. Our customers include small and large medical device companies as well as academic research labs. We wish to expand our team with talented and motivated people.

We are an equal opportunity employer and are committed to creating an inclusive and diverse workplace where everyone feels valued and empowered. We celebrate diversity and welcome applications from people of all backgrounds, regardless of ethnic origin, religion, gender, gender identity, sexual orientation, age, marital status, disability, or any other legally protected characteristic. Our goal is to foster a culture of belonging, where different perspectives drive innovation and success.

You think you can be a good fit? We'd love to hear from you!