via Indeed · 7. September 2026 ·vor 12 Tagen

Senior Fullstack Engineer (m/f/d) - AI Health tech

voize
Köln Vollzeit Remote
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Why voize? Because we’re more than just a job!
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At voize, we believe the greatest gift to frontline workers is time \- time to care, connect, and be present. Today, that time is lost to busywork and complex systems that pull them away from what matters most: people.

Our vision is to change that by building AI companions that seamlessly take over digital workflows. We don’t replace humans with technology \- we amplify their impact.

Our mission is backed with a $50M Series A funding led by Balderton Capital, with support from HV Capital, Y Combinator and other leading VCs. Today, 2,000\+ facilities trust voize, and over 200,000 users rely on our AI companion to ease their daily workload.

As a dynamic team, we combine first\-in\-class technology with meaningful social impact. And now, we’re looking for you to join us on this mission!

Your Mission
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As a Senior Fullstack Engineer at voize, you will be a co\-owner of voize's ML App \- the in\-house platform for annotation, data exploration, ML training orchestration, model evaluation, and the HIPAA\-bearing data flows that move PHI from customer to model. Make in\-house tooling good enough that revisiting Labelbox/Encord\-style vendors is permanently off the table, and unblock HIPAA\-compliant training on US customer data.

Your Daily Business \- No two days are alike
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  • Co\-own the ML App codebase (React/TS SPA \+ Kotlin services \+ Kotlin ETL on EKS)

  • Design and ship features for data labelling, data exploration, ML training orchestration, model evaluation, model playgrounds, and ML\-issue triage

  • Drive the next iteration of in\-house annotation tooling \- UX, throughput, task\-type extensibility \- to the bar where vendor revisits are unnecessary

  • Maintain CI/CD, EKS deploys, and LGTM\-stack observability for ML App; triage and fix defects

  • Pair with the Platform team on platform\-side prerequisites (FGA proxy, OIDC) that the new training flows depend on
Your Skillset \- What you bring to the table
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  • 5\+ years building production fullstack web apps with React \+ TypeScript

  • Excellent Kotlin (or JVM) backend experience \- services, ETL/data pipelines, schema design

  • Demonstrated ownership of a complex, production\-critical system

  • Comfortable engineering with regulated / sensitive data (HIPAA, GDPR, BAA, PHI, or similar)

  • Strong product / UX instincts (annotation, labeling, data exploration, ops UI)
Growing together \- what you can expect at voize
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  • We are a fast\-growing startup, that means you will tackle challenges, grow quickly, and make a real impact, giving frontline workers more time for people

  • We foster an open, collaborative culture with regular team events, whether you work from our Berlin office or remotely across Germany

  • Become a co\-creator of our success with stock options

  • Generous perks: 30 vacation days plus your birthday off, Germany Transport Ticket, Urban Sports Club, regular company off\-sites, and access to learning platforms such as Blinkist and Audible, plus free language courses

  • You decide when you work best, that means flexible working hours and a good hybrid set\-up.
Ready to talk? Apply now!
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We look forward to your application and can’t wait to meet you – no matter who you are or what background you have!

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