HappyScribe in Barcelona is hiring a senior full-stack engineer to own engagement features end to end across Rails backend and React/React Native/Electron apps. You’ll partner with a designer and report to the CPTO, shaping a product area from day one. You’ll work in a small, pragmatic team with strong emphasis on AI-first development, prototype-driven delivery, and evidence-based quality. Hybrid work with a Barcelona office awaits. #J-18808-Ljbffr