Senior Fullstack Engineer (m/f/d)

A health-tech startup backed by $50M Series A funding builds AI companions that take over digital workflows for frontline workers, with 2,000+ facilities and 200,000+ users relying on the product. The company is hiring a Senior Fullstack Engineer to co-own its in-house ML App platform for data annotation, data exploration, ML training orchestration and model evaluation. The role blends React/TypeScript frontend engineering with Kotlin services and Kotlin ETL on EKS, including HIPAA-compliant data flows that move PHI from customer to model. Work is possible from the Berlin office or remotely across Germany in a hybrid set-up.