Senior Desktop Integrations Engineer

Join to apply for the Senior Desktop Integrations Engineer role at Mozilla 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 a cross‑functional team that focuses on updates, installs and integrating Firefox with different OS platforms. As part of the Desktop Integrations team, you will be responsible for all things related to OS integration (particularly Windows and macOS) and helping us grow our user base. Our team is geographically distributed and we work in an open, collaborative environment. We contribute to the code driving the Firefox browser on a number of desktop platforms. About The Role A Senior Software Engineer contributes to architectural discussions and drives feature development within a team. At Mozilla, Senior Engineers are expected to work independently on scoped projects, collaborate closely with peers, and play a key role in delivering high‑quality software that aligns with team goals. What You’ll Do Contribute to the development and improvement of Firefox features related to installs, updates and OS integrations. Help implement enhancements to the Firefox installation and update experience, using data insights to guide development. Tackle platform‑specific challenges in low‑level operating system integration on Windows and/or macOS. Collaborate with your manager and teammates to scope and prioritise work in alignment with the team’s goals. Participate in code reviews and contribute to technical discussions with peers. Take ownership of complex bugs and lead efforts to improve the Firefox experience for hundreds of millions of users. Work closely with your geographically distributed team in a highly collaborative environment. What You’ll Bring 3–5 years experience as a Software Engineer. Experience with systems‑level programming on at least one major platform (Windows, macOS). Solid programming skills in C/C++. Effective communicator and collaborator, especially in distributed teams. Ability to break down technical work and make steady progress within project timelines. A collaborative mindset and a desire to contribute to team success. Bonus Points Programming experience in Rust. Experience working with Windows and/or macOS APIs at a low level (e.g., Win32, Cocoa). Additional experience with Linux, or macOS internals. Contributions to open source projects. What You’ll Get Generous performance‑based bonus plans for all regular employees. Rich medical, dental and vision coverage. Generous retirement contributions with 100% immediate vesting. Quarterly all‑company wellness days. Country‑specific holidays plus a birthday day off. 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. Commitment to Diversity, Equity, Inclusion, and Belonging Mentioned above: We encourage applications from everyone, including members of all equity‑seeking communities such as women, racialized and Indigenous persons, persons with disabilities, persons with any sexual orientation, gender identities, and expressions. Equal Opportunity Statement Mozilla is an equal‑opportunity employer. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, disability, age, or any other protected class. We provide reasonable accommodations for qualified individuals with disabilities. Hiring Ranges: Remote France – €53.000–€77.000 EUR. Seniority level: Associate (Full‑time, Engineering and Information Technology). Group: D. ReqID: R2806. #J-18808-Ljbffr