JavaScript / TypeScript Full Stack Senior Developer (M/W/D)

At Data4Life, we develop secure, standards-compliant digital health solutions that empower researchers and public health institutions to advance evidence-based medicine. As a nonprofit supported by the Hasso Plattner Foundation, we build scalable research infrastructures — supporting international standards such as FHIR and OMOP — and collaborate with some of the world's leading clinical institutions.

As a Senior Full-Stack Engineer, you will work on a medical image annotation application built in collaboration with Mount Sinai Health System in New York, one of the largest and most respected academic medical centers in the United States. Your code will support clinical researchers working with real patient data at scale.

Design, build, and ship high-quality frontend and backend features — writing accessible, performant, maintainable, and well-tested code.

Contribute to software design and architecture decisions, and take part in code reviews across the full stack.

Work closely with designers, QA, and product management as part of an integrated team to deliver well-crafted, user-centered software.

Engage directly with customers and users — joining feedback sessions and user research to build a deep, end-to-end understanding of the product and the problems it solves.

Design with security at the core — shaping authorization concepts and data protection architecture from the ground up, including the documentation that supports review and sign-off by our clinical partners.

A university degree in Computer Science, Software Engineering, or a related discipline.

• 3+ years of professional experience as a software engineer or full-stack developer, or equivalent experience.
• Strong frontend skills: deep fluency in HTML, CSS, and JavaScript/TypeScript, with hands-on experience in React or equivalent.
• Professional written and spoken English, German language skills a plus.

Work on socially impactful projects in the healthcare sector

A diverse, interdisciplinary, and international team working across three locations (Potsdam, Berlin, and Singapore)

Flexible working models with the option to work from home

Permanent employment contract with 30 days of vacation

Attractive employee benefits, e.g. private supplementary health insurance, public transport ticket

With an international team, we work together on the mission to digitize health research. By linking technology and research, we make health data available to research in a comprehensive, digital and secure way. Our interdisciplinary team in Potsdam, Berlin and Singapore brings together experts from fields such as product development, digital engineering, data security and science. We care about Diversity : Many different lives, careers, and development paths lead to Data4Life. We welcome experts from a wide range of backgrounds and experiences to our international team, offering everyone equal opportunities to be themselves and develop to the best of their abilities. Diversity, equality, and inclusion are not just nice words at Data4Life – we put them into practice in all of our activities and projects, striving to incorporate them in our everyday lives.