Full-Stack Staff Product Engineer
Top Benefits
About the role
Who you are
- 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
- Experience with local-first architectures (CRDTs, SQLite, IndexedDB)
- Building cross-platform apps (Electron, Tauri, React Native, etc.)
- Working with AI/LLM APIs (OpenAI, Anthropic, local models)
- Previous contributions to open-source projects or communities
- Experience leading open-source project initiatives
What the job involves
- 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
Benefits
- Health, Dental, and Vision Insurance
- Life Insurance + Accidental Death & Dismemberment
- Short-Term Disability and Long-Term Disability Insurance
- Employee Assistance Program (EAP)
- Retirement Plan contributions
- 20 Paid Time Off days per year (prorated) + your birthday
- Company Holidays + Shutdown
- Wellness budget
- Reimbursement for professional development (up to $3,000/year)
- Industry-leading paid parental leave (up to 26 weeks of fully paid leave for childbearing parents and up to 12 weeks for non-childbearing parents)
- Flexible work environment (nearly half of Mozillians work remotely)
- A work setup including the latest hardware and software of your choice
About Mozilla
A lot of companies say they’re “mission-driven.” Our unique corporate structure guarantees that every decision we make upholds our mission: to ensure the internet remains open and accessible. Beholden to neither shareholders nor investors, Mozilla Corporation is wholly owned by the not-for-profit Mozilla Foundation.
Along with our communities of 20,000+ contributors and collaborators, Mozilla Corporation’s staff designs, builds, and distributes software that allows people to enjoy the internet on their own terms. Our flagship product — the Firefox browser — has expanded into a family of products that protects users and alerts them of risks, safeguards passwords and provides a secure VPN (with more to come).
By maintaining a safe, open internet we're helping humanity, while also helping the individual humans employed here to reach their personal and professional goals. With a relatively small team serving hundreds of millions of people, a culture of exploration, and a commitment to mentorship, opportunities abound to learn and grow at Mozilla.
Full-Stack Staff Product Engineer
Top Benefits
About the role
Who you are
- 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
- Experience with local-first architectures (CRDTs, SQLite, IndexedDB)
- Building cross-platform apps (Electron, Tauri, React Native, etc.)
- Working with AI/LLM APIs (OpenAI, Anthropic, local models)
- Previous contributions to open-source projects or communities
- Experience leading open-source project initiatives
What the job involves
- 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
Benefits
- Health, Dental, and Vision Insurance
- Life Insurance + Accidental Death & Dismemberment
- Short-Term Disability and Long-Term Disability Insurance
- Employee Assistance Program (EAP)
- Retirement Plan contributions
- 20 Paid Time Off days per year (prorated) + your birthday
- Company Holidays + Shutdown
- Wellness budget
- Reimbursement for professional development (up to $3,000/year)
- Industry-leading paid parental leave (up to 26 weeks of fully paid leave for childbearing parents and up to 12 weeks for non-childbearing parents)
- Flexible work environment (nearly half of Mozillians work remotely)
- A work setup including the latest hardware and software of your choice
About Mozilla
A lot of companies say they’re “mission-driven.” Our unique corporate structure guarantees that every decision we make upholds our mission: to ensure the internet remains open and accessible. Beholden to neither shareholders nor investors, Mozilla Corporation is wholly owned by the not-for-profit Mozilla Foundation.
Along with our communities of 20,000+ contributors and collaborators, Mozilla Corporation’s staff designs, builds, and distributes software that allows people to enjoy the internet on their own terms. Our flagship product — the Firefox browser — has expanded into a family of products that protects users and alerts them of risks, safeguards passwords and provides a secure VPN (with more to come).
By maintaining a safe, open internet we're helping humanity, while also helping the individual humans employed here to reach their personal and professional goals. With a relatively small team serving hundreds of millions of people, a culture of exploration, and a commitment to mentorship, opportunities abound to learn and grow at Mozilla.