Staff Design Engineer, AI Product

Staff Design Engineer role at Mozilla's Thunderbird, building Thunderbolt—an open-source AI client for enterprises. You'll work directly in the codebase, turning product ideas and user feedback into functional prototypes and production-ready experiences. This is design-to-code work: component development, AI-powered interaction patterns, design systems, and front-end implementation in TypeScript/JavaScript. You'll balance speed and quality, mentor across teams, and bring user-centered thinking to enterprise workflows, AI transparency, privacy, and security.