Member of Technical Staff - Product Design Engineer

San Mateo, CA February 25, 2026 Full Time

Introducing Moonlake, AI for creating real-time interactive content

Mission: Product-level UX + Full-stack, turn research into 'magical', shippable experiences quickly.

Non-negotiables:

- Strong product taste; rapid prototyping; zero-to-one ownership.

- Stack: Next.js/React, Tailwind/shadcn, edge/serverless (Vercel/Cloudflare), tRPC/GraphQL, file & data sync, and authentication

- Can wire model endpoints, observability hooks, feature flags, and experiment toggles.

Tech signals:

- Portfolio of polished AI demos in production

- Built design systems and shipped them; cares about performance budgets.

We are committed to being an on-site, in-person team currently based in San Mateo