Senior Fullstack Engineer - AI Health Tech (Remote, Stock)

voize; Warszawa; Hybrid; PLN 210,000 - 330,000; Full time

Benefits offered by this job

Stock options

Hybrid work

Remote-friendly

Berlin office

Job summary

voize is seeking a Senior Fullstack Engineer to co-own the ML App—the in-house platform for annotation, data exploration, ML training orchestration, 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.

You’ll co-own the React/TypeScript frontend and Kotlin backend, enhance labeling tooling, maintain CI/CD and EKS

Qualifications

• 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, PHI, or similar).
• Strong product / UX instincts (annotation, labeling, data exploration, ops UI).

Responsibilities

• 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.
• Drive the next iteration of in-house annotation tooling to reduce vendor revisit needs.
• Maintain CI/CD, EKS deploys, and LGTM-stack observability for ML App; triage defects.
• Pair with the Platform team on platform-side prerequisites (FGA proxy, OIDC).

Skills

React

TypeScript

Kotlin

Backend

Data privacy

Tools

EKS

LGTM

CI/CD

Job description

voize is seeking a Senior Fullstack Engineer to co-own the ML App—the in-house platform for annotation, data exploration, ML training orchestration, 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.

You’ll co-own the React/TypeScript frontend and Kotlin backend, enhance labeling tooling, maintain CI/CD and EKS