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

<h2>🎤 Why voize? Because we’re more than just a job!</h2><p style="min-height:1.5em">At voize, <strong>we believe the greatest gift to frontline workers is time - time to care, connect, and be present.</strong> Today, that time is lost to <strong>busywork and complex systems</strong> that pull them away from what matters most: <strong>people</strong>.</p><p style="min-height:1.5em"><strong>Our vision is to change that by building AI companions</strong> that seamlessly take over digital workflows. We don’t replace humans with technology - <strong>we amplify their impact.</strong></p><p style="min-height:1.5em">Our mission is backed with a <strong>$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</strong> to ease their daily workload.</p><p style="min-height:1.5em">As a dynamic team, we combine first-in-class technology with meaningful social impact. <strong>And now, we’re looking for you to join us on this mission!</strong></p><p style="min-height:1.5em"></p><h2>💡 Your Mission</h2><p style="min-height:1.5em">As a <strong>Senior Fullstack Engineer</strong> 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.</p><p style="min-height:1.5em"></p><h2>🚀 Your Daily Business - No two days are alike</h2><ul style="min-height:1.5em"><li><p style="min-height:1.5em"><strong>Co-own the ML App codebase (React/TS SPA + Kotlin services + Kotlin ETL on EKS)</strong></p></li><li><p style="min-height:1.5em"><strong>Design and ship features for data labelling, data exploration, ML training orchestration</strong>, model evaluation, model playgrounds, and ML-issue triage</p></li><li><p style="min-height:1.5em"><strong>Drive the next iteration of in-house annotation tooling</strong> - UX, throughput, task-type extensibility - to the bar where vendor revisits are unnecessary</p></li><li><p style="min-height:1.5em"><strong>Maintain CI/CD, EKS deploys, and LGTM-stack observability for ML App</strong>; triage and fix defects</p></li><li><p style="min-height:1.5em"><strong>Pair with the Platform team on platform-side prerequisites (FGA proxy, OIDC) </strong>that the new training flows depend on</p><p style="min-height:1.5em"></p></li></ul><h2>🤝 Your Skillset - What you bring to the table</h2><ul style="min-height:1.5em"><li><p style="min-height:1.5em">5+ years building production fullstack web apps with <strong>React + TypeScript</strong></p></li><li><p style="min-height:1.5em"><strong>Excellent Kotlin (or JVM) backend experience</strong> - services, ETL/data pipelines, schema design</p></li><li><p style="min-height:1.5em"><strong>Demonstrated ownership of a complex, production-critical system</strong></p></li><li><p style="min-height:1.5em">Comfortable engineering with <strong>regulated / sensitive data</strong> (HIPAA, GDPR, BAA, PHI, or similar)</p></li><li><p style="min-height:1.5em">Strong product / UX instincts (annotation, labeling, data exploration, ops UI)</p><p style="min-height:1.5em"></p></li></ul><h2>🌱 Growing together - what you can expect at voize</h2><ul style="min-height:1.5em"><li><p style="min-height:1.5em">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</p></li><li><p style="min-height:1.5em">We foster an open, collaborative culture with regular team events, whether you work from our Berlin office or remotely across Germany</p></li><li><p style="min-height:1.5em">Become a co-creator of our success with stock options</p></li><li><p style="min-height:1.5em">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</p></li><li><p style="min-height:1.5em">You decide when you work best, that means flexible working hours and a good hybrid set-up.</p></li></ul><p style="min-height:1.5em"></p><h2>✨ Ready to talk? Apply now! 🚀</h2><p style="min-height:1.5em">We look forward to your application and can’t wait to meet you – no matter who you are or what background you have!</p><p>Find <a href="https://www.arbeitnow.com">Jobs in Germany</a> on Arbeitnow</a>