Senior Fullstack TypeScript Developer

How taxation, accounting and payroll work today is a pain for everyone. Still every business must do it continuously. It is the backbone that our economy runs on.

While we are providing a world-class professional service to our customers, technology is at our core and you will be an integral part of building it from scratch. Design and implement the APIs, data models and services that the product runs on — and ship the UI on top of them. Prefer boring tech where it matters; innovate where it differentiates.

Current stack (continually evolving): TypeScript end-to-end, Next.Most of the hard problems sit behind the API: data modelling for tax logic, integrations with third-party systems, and AI pipelines that have to be correct, not just plausible.

5+ years of professional experience building and operating web applications end-to-end, with strong TypeScript/Node fundamentals (Next.React on the frontend)

• A bachelor’s or master’s degree in computer science or a related field
• You have worked in a cross-functional team setup, are product-minded and like working in an agile startup environment
• Your centre of gravity is the backend — APIs, data modelling, integrations — and you're comfortable owning a feature through to the UI. You have integrated AI already deeply into your daily coding tasks and don’t just use it for autocompletion
• Very good written and verbal communication skills in English (min. C1), German is a plus
• You have a valid work permit to work in Germany