Front End Software Engineer, Mozilla

• 4+ years building production web apps; strong JavaScript/TypeScript and DOM fundamentals
• Practical experience with Hotwire/Turbo + Stimulus (or adjacent expertise and willingness to ramp fast)
• Experience using CSS Frameworks and component libraries (currently we are using Tailwind and Flowbite)); strong eye for interaction design and visual polish
• Comfortable with OAuth flows and integrating REST/JSON APIs; solid grasp of async states, streaming updates, and form UX
• Performance and accessibility mindset: Core Web Vitals, a11y (ARIA, focus management), responsive design
• Testing discipline: you write tests that make refactors safer and delivery faster
• Fluency using Github
• Commitment to our values:
• Welcoming differences
• Being relationship-minded
• Practicing responsible participation
• Having grit
• You don’t need every bullet. If you build fast, accessible, beautiful web apps and care deeply about users, let’s talk

Desirable

• The New Products group is building a suite of content creation and productivity tools to help solopreneurs, freelances and small and medium businesses (SMBs) grow their customer base and work more efficiently
• As a Front-End Engineer on our small and awesome team, you will have a seat at the table for all conversations on product vision and strategy
• You will play a key role in shaping and building a new product from early prototyping, to MVPs, to finding product market fit
• You are inventive, creative, and know just how far to plan ahead for a project that operates more like a startup than an established software product
• You will have wide latitude to operate independently with your teammates
• You love to be invigorated by new challenges, you love working collaboratively, and you will have a team that supports you in making your very best contribution
• We are looking for someone who thrives in an entrepreneurial setting, is comfortable working in a small team, has a track record of delivering, and can navigate the unique challenges of building 0 to 1 products
• Lead technical front-end development of a new product line, from prototype up to business-critical high traffic products
• Develop and implement front-end for generative AI applications
• Prototype and develop early stage products with a keen eye for user experience
• Work cross-functionally with other engineers, design and product management
• Write maintainable code with tests (unit/integration/e2e) and crisp docs; partner closely with product/design/back‑end; join customer sessions to translate insights into UX
• Participate in code/design/architecture reviews and project retrospectives; clearly communicate view points and share learnings across the team
• Keep pace with new AI tools for software development, such as AI copilots
• Instrument the product: analytics events/funnels, error & latency monitoring, feature flags/experiments; use data to iterate weekly
• Design human‑in‑the‑loop interactions: inline edits, split/merge transactions, bulk approve/undo, keyboard shortcuts, optimistic UI, and audit trails