Founding Sr Full Stack Engineer
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Job Description
Founding Senior Full Stack Engineer
Munich, Germany | In-Office — Full-time
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WHY THIS ROLE
Seed-backed ($4.5M, early 2026) Munich healthtech startup building smartphone-based preventive health screening via digital biomarkers — face video, voice recordings, eye and skin imaging, typing patterns, and accelerometry. The platform assesses health status through passive inputs and integrates directly with health insurers and clinic partners, addressing a commercially validated B2B2C distribution model. The CTO brings published research in Nature and IEEE journals and has led an FDA-approved medical AI algorithm study — rare scientific depth for a founding-stage company. As a founding engineer, you hold full ownership of stack decisions from day one, with a clear path to Staff Engineer or Engineering Lead as the team scales into expanded insurer and clinic distribution.
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ABOUT THE ROLE
You'll own backend services (Python/FastAPI) and customer-facing web features (Next.js/React) for the core platform, partnering daily with an ML and biostatistics team to integrate model outputs into user-facing flows and insurer data pipelines. Team of 9–15, fully on-site in Munich.
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REQUIREMENTS
Experience: 5+ years professional software engineering
- BS in Computer Science, Mathematics, or related technical field
- Primary backend expertise in Python and FastAPI
- Production experience with TypeScript, JavaScript, Next.js, and React
- Previous startup or high-ownership environment experience
- Strong CI/CD discipline and full SDLC understanding
- Fluent written and spoken English (working language)
- Able to work on-site full-time in Munich, Germany
Preferred:
- Experience in a regulated industry (healthcare, banking, or insurance)
- Familiarity with mobile integration (Flutter)
Tech Stack: Python, FastAPI, TypeScript, JavaScript, Next.js, React, CI/CD (automated), Flutter (mobile integration)
Bar Admission: N/A
Visa Sponsorship: Not specified
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LOGISTICS
Location: Munich, Germany
Work Policy: In-Office — full-time on-site required
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COMPENSATION
Base: €90,000--€130,000
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INTERVIEW PROCESS
4 rounds: intro call with the founding team → technical discussion and system design with the CTO → practical technical exercise (live coding or take-home) → final founder interview and values alignment conversation.
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Automate your job search with Sonara.
Submit 10x as many applications with less effort than one manual application.
