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Frontend and Mobile Developer (f/m/i)

Data4life

Berlin permanent

Posted: February 12, 2026

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Quick Summary

Build and implement state-of-the-art frontend and mobile features by writing accessible, performant, maintainable, and well-tested code following the clean code principles.

Job Description

Hi there!:
Are you eager to learn new things and implement your own ideas while working with an international and passionate team of professionals?

Would you like to contribute to digital research solutions that have a meaningful impact on healthcare and science?


Your future role:
• Build and implement state-of-the-art frontend and mobile features by writing accessible, performant, maintainable, and well-tested code following the clean code principles.
• Develop, test, and review code. Take part in the software design and architecture decisions.
• Implement modules to connect to wearable sensors via Bluetooth Low Energy.
• Implement modules to connect to the sensors built in mobile phones, smart watches, and other wearables via SDKs.
• Extend our existing Wear OS companion app, written in Kotlin.
• Use your UI expertise to implement digital health products and prototypes.
• Collaborate closely with UX Design, Backend Engineering, QA, and Product Management.


What you need to succeed:
• You’re ready for a challenging position with the opportunity to learn and to contribute  with your 2+ years experience as a frontend engineer.
• You hold a university degree in Computer Science, Software Engineering or in a related field 
• You have experience with mobile app development on Android and optionally on iOS.
• You have worked hands-on with cross-platform app development using React Native.
• You have a deep understanding of HTML, CSS, JavaScript/TypeScript.
• You have a strong focus on performance, semantic markup, accessibility, and security.
• Your written and spoken English is fluent, knowledge of German is a plus


Why you will love working with us:
• Active contribution to developing digital solutions and making health data ready for research.
• Nonprofit work with a clear purpose: Make the world a healthier place. With us, you will find a fulfilling and meaningful task in a nonprofit environment that will advance our society.
• A diverse and international team of professionals working together at 3 locations (Potsdam, Berlin and Singapore).
• Real work life balance with flexible working hours, 30 days of paid vacation, and possibility for hybrid work.
• The option to work abroad remotely up to 2 months per year from various countries, depending on your role and responsibilities.
• We’ve got you covered with our comprehensive private health insurance
• We support your climate friendly mobility choice with Deutschlandticket
• An attractive budget for your further career development
• Regular knowledge transfer through “all hands” and “town hall” meetings and knowledge sharing events (“Knowledge4Life”)
• Employee driven initiatives like the climate initiative and the DEI (diversity, equity, and inclusion) initiative where every new colleague is welcome to participate.


Good to know:
• We especially welcome applicants from the LGBTQI+ community, people with a migration background, people of color, and individuals with neurodiversity, disabilities, or chronic illnesses to the team.
• If you need support or special assistance during the application or interview process due to a disability, please feel free to let us know and we are happy to accommodate you as much as possible. 
• Please enclose your complete documents (CV, letter of motivation, salary expectations and earliest possible starting date) with your application.
• For this position it is important that you are able to regularly be present in our Berlin and sometimes in our Potsdam office

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