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

voize
Berlin +7 more
Remote

Who this role is best for

Strong fit for experienced fullstack engineers who build production systems with React/TypeScript and Kotlin, and have a background in regulated data environments.

Best fit for

  • Candidates with 5+ years of fullstack experience and a background in regulated data environments
    — “5+ years building production fullstack web apps with React + TypeScript”
  • Individuals who have demonstrated ownership of production-critical systems and can manage complex data flows
    — “Demonstrated ownership of a complex, production-critical system”
  • Engineers with a track record of designing user-centric tools for data labeling and exploration
    — “Strong product / UX instincts (annotation, labeling, data exploration, ops UI)”

Things to consider

  • Candidates must be comfortable with a hybrid work arrangement and flexible hours, but not fully remote.
    — “You decide when you work best, that means flexible working hours and a good hybrid set-up.”

How to stand out

  • Emphasize experience with in-house tooling development and ownership of complex systems in your resume.
    — “Make in-house tooling good enough that revisiting Labelbox/Encord-style vendors is permanently off the table”
  • Highlight your background in handling sensitive data and compliance frameworks like HIPAA and GDPR.
    — “engineering with regulated / sensitive data (HIPAA, GDPR, BAA, PHI, or similar)”
  • Showcase your ability to design and ship features for data labeling and exploration tools.
    — “Design and ship features for data labelling, data exploration, ML training orchestration, model evaluation, model playgrounds, and ML-issue triage”
Pace · Fast PacedCollaboration · HighAutonomy · MediumDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • Co-own the ML App codebase
  • Design and ship features for data labeling, exploration, ML training, and evaluation
  • Maintain CI/CD, EKS deploys, and observability
  • Pair with the Platform team on prerequisites
Typical background
Experience in fullstack developmentExperience in HIPAA-compliant systemsExperience in ML training and evaluation

Skills & requirements

Required

Fullstack DevelopmentReact/typescriptKotlinData ExplorationML Training OrchestrationModel EvaluationHipaa ComplianceProduct/ux InstinctsCI/CDEKS DeploysObservabilityDefect TriagePlatform-side Prerequisites

Preferred

LLM And Agent Tooling

Stack & domain

ReactTypeScriptKotlinHIPAAGDPRBAAPHIProduct InstinctsUX InstinctsAIHealth Tech

About the role

Original posting from voize via Ashby

🎤 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 - Freelance 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.

✨ READY TO TALK? APPLY NOW! 🚀

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

Source: voize careers (Ashby)

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