Why join Mozilla engineering?
Learn: Code review at Mozilla includes pushing to passionate contributors around the world. Building Firefox and its family of products requires knowledge up and down the stack, and extremely high standards for security and optimization. Beyond the browser, we’re developing AR/VR, IoT, and voice recognition products that respect and protect privacy.
Grow: We’re dedicated to helping every team member develop. We give engineers trust and responsibility from day one, offer generous stipends for learning opportunities, and provide mentorship, especially around key leadership skills like collaboration and clear, kind communication.
Make Your Mark: We’re small but mighty, challenging the biggest behemoths on the internet with a staff the size of their marketing departments. That means every engineer can have an outsized impact on products that touch tens of millions of users—ultimately influencing how the entire internet works.
The Firefox Platform Layout team is a global community of engineers and product managers who care deeply about how the Web looks. We are the team responsible for page layout, CSS, images, text, printing, and animations in Gecko, the engine behind Firefox. Are you a hardworking software engineer who enjoys collaborating with other driven, committed team members to help bring the Open Web to millions of people? Are you proficient and experienced in either C++ or Rust? If so, we'd love to hear from you!
On our team, you will be able to design and develop standards-compliant CSS and page layout features that all of our users see, helping make the Web Platform more usable, accessible, and beautiful over time.
Our team is geographically-distributed, and working in the open is the norm. You can expect to work on the Firefox engine code targeting a number of platforms, including Android, Windows, Linux, and macOS.
As a member of our team you will:
- Improve the layout, CSS styling, and animation capabilities of our Web engine, with a focus on performance, Web compatibility, and standards correctness
- Write new CSS and layout features, improve existing features, and write tests to mitigate against future regressions
- Read and implement W3C standard specifications, potentially contributing to the standards process by providing feedback or raising issues
- Help triage, test and fix reported bugs, reducing them to root causes and exploring potential solutions
- Participate in regular code reviews, team meetings, and planning sessions
We value a diversity of voices on our team. You don't need to check every box on this list to apply.
- Bachelor’s degree or equivalent experience in computer science or similar field
- Experience developing applications in C, C++ or Rust
- Strong debugging and optimization skills in a multi-threaded environment
- Experience with memory and performance optimizations tools
- Excellent written and verbal communication skills
- Proven record of finishing projects where the work spans several months
- Ability to quickly learn and be effective with a large code base
- Experience participating in and contributing to open source projects
Bonus points if you have any of the following:
- Familiarity with Android application programming, profiling and debugging
- Familiarity with low-level graphics programming APIs (OpenGL or others)
- Experience with and understanding of fonts and font rendering technologies
Feel good about your work again.
At Mozilla, we’re serving humanity—by maintaining a safe, open internet—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.
Our values drive our actions
- Purpose is built into our work, with our mission driving every decision
- We challenge assumptions, the status quo, ourselves, and each other
- We are transparent: in our code, our business partnerships, and our everyday interactions
- We seek out people from diverse backgrounds and with perspectives different from our own
- We pair purpose with performance and put people ahead of profit
Our impact is global
- 1000+ paid staff from over 30 countries
- Thousands of volunteer contributors across six continents
- 10 global offices: Beijing, Berlin, London, Paris, Mountain View, Portland, San Francisco, Taipei, Toronto and Vancouver
- Hundreds of home offices globally
Our benefits are world-class
- Flexible work environment (nearly half of Mozillians work remotely)
- 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)
- Reimbursement for professional development (up to $3,000/year)
- A work setup including the latest hardware and software of your choice
- Wellness programs—we reimburses up to $1700/year for expenses like child and elder care, mental wellness, and personal enrichment
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.
We are an equal opportunity employer and value diversity. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
A lot of companies say they’re “mission-driven.” Our unique corporate structure guarantees that every decision we make upholds our mission: to make sure the internet stays available, safe, and welcoming to everyone. Beholden to neither shareholders nor investors, Mozilla Corporation is wholly owned by the not-for-profit Mozilla Foundation.
Along with 20,000+ volunteer contributors and collaborators all over the world, 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. Mozilla’s Emerging Technologies group incubated and sponsors Rust — Stack Overflow’s “most loved programming language” for the last four years — and is building safe, private versions of virtual reality, internet of things, and voice recognition.