Web Fullstack Architect

As a Principal Fullstack Architect for Pi, you will own the technical architecture and execution of our end-to-end product experience—from a highly scalable React and Next.js frontend to performant, reliable backend systems that power AI-driven interactions. This is a deeply hands-on role for an experienced engineer who leads by example, writes production code daily, and sets a high bar for engineering quality. You will partner closely with product, design, backend, and ML teams to evolve Pi’s architecture, ensure long-term maintainability, and mentor engineers as we scale a product used by millions of people worldwide.