Full-Stack Staff Product Engineer, Mozilla

• 10+ years of professional software development experience
• 5+ years focused on frontend development
• 3+ years of experience with React
• 3+ years of experience with TypeScript
• Experience delivering vertically integrated features across the stack (monorepo environments a plus)
• Strong system design skills — data flow, state management, caching, and API design
• Strong product sense — attention to UX, reducing friction, and thinking beyond specs
• Experience with AI product development (at least 1 year preferred)
• Fast learner with a growth mindset — comfortable working with emerging tools and technologies
• Excellent written and verbal communication skills
• Proven ability to collaborate with developers, designers, and product managers
• Commitment to open-source development and open standards

Desirable

• We’re looking for a generalist Full-Stack Staff Product Engineer who thrives on ownership and versatility
• This is not a “stay in your lane” role — you’ll work across the entire stack, from frontend and backend to desktop shell and AI integrations, helping shape the foundation of a new product
• Design and implement end-to-end features across the stack
• Make architectural decisions that influence the entire product
• Build responsive UIs in React using modern patterns (hooks, server components, streaming)
• Develop local-first data sync and storage strategies
• Integrate AI/LLM capabilities (streaming, embeddings, agentic workflows)
• Create cross-platform desktop experiences with Tauri
• Implement email parsing, IMAP sync, and message intelligence
• Build real-time features using WebSockets and server-sent events
• Optimize performance for on-device ML inference
• Own the full product development cycle — from concept to release
• You’ll join a small, ambitious team shaping the future of privacy-first AI experiences, collaborating with staff and community members worldwide to create exceptional user experiences and advance MZLA’s mission