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

voize; Dortmund; Hybrid; EUR 90.000 - 120.000; Vollzeit

Benefits dieser Stelle

Stock options

30 vacation days

Germany Transport Ticket

Urban Sports Club

Company off-sites

Learning platforms (Blinkist/Audible)

Free language courses

Zusammenfassung

voize is a fast-growing startup in Germany seeking a Senior Fullstack Engineer to co-own the ML App, the in-house platform for annotation, data exploration, ML training orchestration, model evaluation, and HIPAA-bearing data flows that move PHI from customer to model.

You will work on React/TypeScript SPA plus Kotlin services on EKS, designing features for data labelling, exploration, and model training, while ensuring secure, scalable solutions and strong UX focus across teams.

Qualifikationen

• 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).

Aufgaben

• 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 to reduce vendor revisit needs.
• Maintain CI/CD, EKS deploys, and observability for ML App; triage defects.
• Pair with Platform team on prerequisites (FGA proxy, OIDC) that new training flows depend on.

Kenntnisse

React/TS

Kotlin backend

ownership

HIPAA/GDPR

UX instincts

Jobbeschreibung

Why voize? Because we're more than just a job!

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

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

• 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

• 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

• 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.

We look forward to your application and can't wait to meet you – no matter who you are or what background you have!