Full Stack Engineer

Location: Berlin, Germany (Hybrid)

Work Policy: : Hybrid; fully remote possible for exceptional candidates

Work Experience: +5 years experience

Language Requirement: English B2

Employment Type: Full-time

Technical Skills Required: Full Stack Development, TypeScript, React Native, LLMs, API design, Electron

Industry: HealthTech/Software-as-a-Service (SaaS)

Positions Available: 1

Company Mission

They relieve psychotherapists of administrative burdens through intelligent AI assistance, giving them more time for what matters most: working with patients and providing high-quality therapy.

Core Values

Empathy: They develop for people who help others. That's why they listen and build solutions that make everyday practice noticeably easier instead of complicating it.

Trust: Trust is their foundation. They work uncompromisingly securely, transparently, and reliably—both with their data and within their team.

Quality: They deliver professional precision instead of gimmicks. Their AI has to stand up to everyday therapeutic use, which is why they focus on technical excellence with real added value.

Tasks

Own features end to end, by yourself – from the problem through architecture, implementation, release and the fixes that follow, frontend, backend and everything in between; nobody hands you a finished spec and nobody finishes your work for you

Make the technical decisions, from choosing a library to architecting a new feature, and defend the decision when it is questioned

Integrate AI into the product, working with our AI services to build dependable systems around probabilistic output

Build real-time features with WebSocket-based live capabilities where latency is visible to the user

Ship on desktop and mobile, working on our Electron app (main and renderer architecture, native OS integration, auto-update, offline-first behaviour) and React Native app

Iterate fast with continuous deployment and short cycles, ensuring design controls and traceable test evidence on the surfaces that fall under EU MDR

Take initiative creating tickets and implementing them end-to-end

Requirements

Genuinely full-stack. Strong React and TypeScript on the front end, and real backend work behind it: API design, data modelling, relational databases, async and background processing. You have built and operated both halves of a feature, not consumed an API someone else wrote

You have shipped software that real users depend on, and you supported it afterwards. You know what breaks in production and why

Debugging strength across the whole stack. When something is wrong you find it rather than guess at it

Real autonomy. You identify what needs doing, decide, and ship. No standup is what keeps you moving

Empathy for the people who use what you build. Our users are therapists under time pressure, and you are curious enough about their work to build something they actually love

Clear written English and comfort working async

React, TypeScript, API design

Data modelling

Relational databases

Async processing

Debugging

LLM application engineering: evaluation, prompt pipelines, agent tooling, latency and cost optimisation

Electron or another desktop platform, including distribution, code signing and auto-update

React Native, and experience publishing to the App Store and Play Store

Audio processing, transcription or other real-time media

Healthcare, GDPR-heavy or other regulated environments

German. Our users, their documents and our support conversations are in German

Excellence and Drive are required. But typically > 5 years

Strong autonomy, very ambitious and driven, curious about the domain

Benefits

High degree of creative freedom: End-to-end responsibility for features and architectural decisions in direct collaboration with the CTO and founders.

Broad technical scope ranging from React/TypeScript to Electron & React Native to LLM integration with real-time WebSocket functionality.

Practical AI engineering tasks in production systems rather than demo projects, including cost and latency optimization in compliance with the EU MDR.

Tangible social impact: The software frees up hours each week for therapists, thereby improving psychotherapeutic care.

A dynamic, fast-growing scale-up that is already the market leader in the DACH region and is pursuing ambitious product roadmaps.

An attractive package including a copetitive salary, a substantial equity stake, 28 days of vacation, and a flexible hybrid or remote work setup in Berlin-Mitte.

Why Work WIth Them

Own entire features in a bootstrapped, market-leading HealthTech scale-up—no layers, direct CTO access.

Ship real AI solutions that save therapists hours weekly—your code impacts mental-health care immediately.

Competitive salary plus meaningful equity; high autonomy to choose tools & architecture.

Hybrid Berlin or remote for exceptional engineers; flexible hours & latest equipment.

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