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

voizeBerlinTech
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Salary
Not listed
Job type
Contract
Work mode
Remote
Experience
Senior · 5+ yrs
Posted
7 Oct 2026
Status
Open · checked 7d ago

About this role

Based in Berlin or remotely across Germany, this contractor position is for a Senior Fullstack Engineer to develop internal machine learning applications and data pipelines. The role suits an experienced developer with a background in fullstack web development and regulated data environments who wants to build tools for healthcare technology.

Role Overview

voize seeks a Senior Fullstack Engineer to co-own the internal machine learning application platform. The position involves building tools for data labeling, exploration, training orchestration, and model evaluation while ensuring secure data flows for protected health information.

Key Responsibilities

Co-own the machine learning application codebase utilizing React, TypeScript, and Kotlin services running on EKS
Design and release features for data exploration, labeling, model playgrounds, training orchestration, and issue triage
Develop annotation tooling to improve user experience, operational throughput, and task extensibility
Manage deployment processes, continuous integration, and observability stacks while resolving software defects
Collaborate with the platform team on prerequisites including authentication proxies and access control protocols

Requirements

Minimum of five years of professional experience building production fullstack web applications using React and TypeScript
Backend development background in Kotlin or the JVM ecosystem, including services, data pipelines, and schema design
Demonstrated track record of owning complex, production-critical software systems
Practical experience engineering software that handles regulated or sensitive data such as HIPAA, GDPR, or PHI
Strong product and user experience instincts focused on operational interfaces and data tools

Skills and Tools

React
TypeScript
Kotlin
JVM
EKS
ETL
CI/CD
LGTM stack
OIDC
FGA proxy

Salary and Benefits

Stock options
30 vacation days plus the employee birthday off
Germany Transport Ticket
Urban Sports Club membership
Regular company off-sites and team events
Access to learning platforms such as Blinkist and Audible
Free language courses
Flexible working hours and hybrid setup

About the Company

voize builds artificial intelligence companions to automate digital workflows for frontline workers in healthcare facilities. The organization is backed by a $50 million Series A funding round led by Balderton Capital, with participation from HV Capital and Y Combinator, and its technology is utilized across more than 2,000 facilities.

How to Apply

Candidates should apply directly on the official company careers page.

Skills and tech stack

Questions candidates ask

Where is the position located?

The role can be performed from the Berlin office or remotely across Germany.

What is the employment type?

This position is a contract role.

How many years of experience are required?

Candidates must have at least 5 years of experience building production fullstack web applications.

What technologies are used in the backend?

The backend utilizes Kotlin or JVM services and ETL pipelines.

Is experience with sensitive data necessary?

Yes, candidates must be comfortable engineering software with regulated or sensitive data such as HIPAA, GDPR, or PHI.

Ready to apply?

The application is on the official voize careers page.

Apply on company site