Staff Software Engineer — AI-Driven, Builder-First Platform en Madrid, España

Taxfix is seeking a Staff Software Engineer to build core features for our flagship product, turning complex tax scenarios into simple, reliable experiences. You'll work hands-on in a cross-functional team and take ownership from discovery to production, with a strong emphasis on AI-first software development and maintainable code.

You’ll collaborate across frontend and backend stacks, design scalable services, and contribute to technical direction while raising the bar for quality, design, and