Treatwell is seeking a Senior Frontend Engineer to own the frontend experience from design to deployment, joining a team shipping features across a modern React/Type Script stack. You’ll collaborate with designers, PMs, and engineers while balancing legacy Backbone code with new patterns. In a hybrid remote-friendly setup across Europe, you’ll emphasize automated testing, frontend observability, and UX quality, contributing to scalable, maintainable code and high-impact product decisions. #J-18808-Ljbffr