Why Mozilla?
Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we’re doing this while never losing our focus on our core mission – to make the internet better for people.
About this team:
The Firefox team is a community of engineers who care deeply about delivering the fastest, friendliest, most usable browser possible. We are responsible for making the things you see in the browser work securely, quickly, and well! Desktop Integrations is part of Firefox Growth: a cross-functional team of engineers, product managers, designers, and data scientists focused on helping more people discover, choose, and keep coming back to Firefox.
We build the places where Firefox meets the operating system: notifications that reach people even when Firefox is closed, pinning web apps to the taskbar, launch on login, and making Firefox the default browser on Windows and macOS. We ship these as experiments, measure their impact on engagement, and double down on what works.
Our team is geographically distributed, and working in the open is the norm. We contribute to the code driving the Firefox browser on all desktop platforms.
About the role:
A Software Engineer is an early-career individual contributor who is growing in their ability to take on more complex tasks. At Mozilla, this role involves working on engineering projects that typically span several weeks and require collaboration with peers. Software Engineers at this level contribute to implementation, ask thoughtful questions, and raise blockers early. They communicate clearly within their team, follow team processes, and steadily build expertise in their domain.
What you’ll do:
- Build and maintain Firefox features that help people get more value from Firefox and keep coming back, from OS notifications to taskbar and startup integrations.
- Implement product experiments with guidance from senior engineers, including feature flags, targeting, and telemetry, so we can measure what actually moves engagement.
- Work on platform-specific challenges on Windows and/or macOS where Firefox interacts directly with the operating system.
- Partner with product, design, and data science to understand the goal behind each feature and how its success will be measured.
- Collaborate with your manager and teammates to define and scope tasks, with regular check-ins to share progress and ask for support when needed.
- Participate in code reviews to grow your understanding and contribute to a high-quality codebase.
- Help identify and fix bugs that improve the Firefox experience for our global user base.
- Engage with a distributed team and contribute positively to our open and inclusive work environment.
What you’ll bring:
- Proficiency in at least one of C++, Rust, or JavaScript, and willingness to learn the others.
- Some experience building software that runs on a major desktop platform (Windows, macOS, or Linux).
- Curiosity about users and impact: you care whether a feature is used, not just whether it ships.
- Willingness to communicate clearly, ask questions, and seek feedback.
- Ability to contribute to collaborative projects and steadily build up your technical and problem-solving skills.
- A growth mindset and enthusiasm for contributing to impactful software.
Bonus Points
- Exposure to native Windows or macOS APIs (such as Win32, WinRT, or Cocoa).
- Experience with A/B testing, feature flagging, or product analytics.
- Familiarity with SQL or working with telemetry data.
- Previous participation in open source projects or a strong interest in learning how to contribute.
We value a variety of voices within our team and at Mozilla. You don't need to check every box on this list to apply.
What you’ll get:
- Generous performance-based bonus plans to all regular 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: E
#LI-REMOTE
Req ID: R3253
Hiring Ranges:
Skills Required
- Some experience with systems-level programming on a major platform such as Windows or macOS
- Proficiency with C or C++ programming
- Clear communication, willingness to ask questions, and openness to feedback
- Ability to contribute to collaborative projects and develop technical and problem-solving skills
- Growth mindset and enthusiasm for contributing to impactful software
- Exposure to or experience with Rust
- Familiarity with Linux or macOS internals
- Exposure to native Windows or macOS APIs such as Win32 or Cocoa
- Previous open-source participation or strong interest in contributing to open source
Mozilla Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Mozilla and has not been reviewed or approved by Mozilla.
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Healthcare Strength — Health coverage is fully employer‑paid in the U.S. and Canada, with generous coverage noted in most other countries. Mental‑health care access, including therapy and coaching, is emphasized.
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Parental & Family Support — Paid parental leave is described as substantial for both childbearing and non‑childbearing parents in the U.S. and Canada. Family‑friendly policies extend to dependent healthcare coverage.
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Strong & Reliable Incentives — Performance‑based bonus plans are offered to all regular employees, with individual targets and quarterly opportunities. This cash‑oriented model provides predictable, company‑wide incentive structures.
Mozilla Insights
What We Do
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.
