Front End Software Engineer, New Products

With pioneering brands like Firefox, Mozilla is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. With a quarter of a billion people around the world using our products, we’re shaping the next 25 years of technology for the good of people, not companies. 

The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we are only beholden to our mission, not shareholders. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute software that enables people to enjoy the internet on their terms. 

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.

What you’ll do: 

• 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.

What you’ll bring: 

• 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.

Bonus

• Google APIs (Drive Picker, Gmail scopes) and Stripe Dashboard fluency; experience surfacing webhook state via Turbo Streams.
• Data‑heavy UI experience (tables, virtualized lists, CSV importers, reconciliation views).
• Experience presenting AI/LLM outputs responsibly (confidence, provenance, explanations) and building “explain/inspect” UI.
• Experience with Ruby on Rails would be awesome
• Experience with Docker and Kubernetes
• Design‑system chops (tokens, theming, dark mode) and i18n.
• Startup/founding‑team experience.
• Experience or familiarity with bookkeeping, accounting, or taxes

What you’ll get:

• Generous performance-based bonus plans to all eligible employees - we share in our success as one team
• Rich medical, dental, and vision coverage
• Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)
• Quarterly all-company wellness days where everyone takes a pause together
• Country specific holidays plus a day off for your birthday
• One-time home office stipend
• Annual professional development budget
• Quarterly well-being stipend
• Considerable paid parental leave
• Employee referral bonus program
• Other benefits (life/AD&D, disability, EAP, etc. - varies by country)

About Mozilla 

Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.

Commitment to diversity, equity, inclusion, and belonging

Mozilla understands that valuing diverse creative practices and forms of knowledge are crucial to and enrich the company’s core mission.  We encourage applications from everyone, including members of all equity-seeking communities, such as (but certainly not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientations, gender identities, and expressions.

We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at [email protected] to request accommodation.

We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws.  Mozilla will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.

Group: D

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Req ID: R2926