Senior Fullstack TypeScript Developer

Our intuitive app enables anyone, regardless of education or background, to file their taxes with newfound confidence.
We speak our minds openly, and with over 400 professionals, including tax experts, developers, and IT security experts, we're rich in ideas and voices. As our Senior Fullstack Developer you'll have the freedom to work from home or our modern, well-equipped office in Stuttgart (Fellbach). Collaborating closely with our product and frontend experts, you will leverage AI-driven development to accelerate our growth and deliver maximum value to millions of users.

We believe in data-driven decisions, logic, and common sense, while maintaining a culture where everyone is treated equally and fairly. Collaborate with product and frontend teams to design and implement impactful new features.
Actively drive AI-supported development by integrating LLMs for code generation and product features.
Explore and implement advanced topics like machine learning, generative AI, and data engineering.
You possess strong proficiency in at least one object-oriented or functional language (Java, Kotlin, Scala, Python), with a focus on TypeScript .
You are highly proficient with modern AI tooling, such as Claude Code, GitHub Copilot, Cursor, or LLM APIs .
You are a pragmatic problem-solver who values logic and data over hierarchy.
A chance to do meaningful, people-centric work with an international team of passionate professionals.

• A monthly allowance to spend on an extensive range of services that you can use and roll over as flexibly as you like.
• Employee stock options for all employees - because everyone deserves to benefit from the success they help to create.
• 30 annual vacation days and flexible working hours.
• A generous learning budget to support your personal and professional development and guidance from our internal L&D experts.
• In addition to internal meetups, our international team hosts regular get-togethers - virtually and in person when possible.
• We're proudly committed to equal employment and development opportunities no matter your gender, race, religion, age, sexual orientation, colour, disability, or place of origin.