Lead Product Engineer (Full Stack), Materia AI This role is heavily backend focused (roughly 70% backend / 30% frontend). We are specifically looking for engineers who have built and shipped real products end-to-end, not just contributed small features within large organizations. Strong preference for candidates with: Hands-on ownership building production products from 0 1Python backend depth (FastAPI/Django/APIs/microservices)Scalable distributed systemsProduct engineering mindsetCustomer-f