Senior Software Engineer, Firefox Performance

Who you are

You have a strong background in software engineering with a focus on performance optimization — your experience includes working on large-scale applications and understanding the intricacies of browser performance. You are comfortable collaborating with geographically-distributed teams and are passionate about contributing to open-source projects. You thrive in environments where innovation and user experience are prioritized, and you are eager to make a meaningful impact on the web.

Desirable

Experience with multiple platforms such as Windows, Android, Linux, and macOS is a plus — you understand the challenges and opportunities that come with cross-platform development. Familiarity with performance testing tools and methodologies will help you excel in this role. You are also open to learning new technologies and adapting to the evolving landscape of web development.

What you'll do

As a Senior Software Engineer on the Firefox Performance team, you will be responsible for identifying and implementing performance improvements across the browser. You will analyze performance metrics, conduct experiments, and collaborate with other engineers to optimize the browser's speed and responsiveness. Your work will directly impact millions of users worldwide, ensuring they have a fast and seamless browsing experience.

You will participate in code reviews and contribute to the development of best practices for performance optimization. Collaborating with product managers and designers, you will help define the performance goals for new features and enhancements. Your insights will guide the team in making data-driven decisions that align with Mozilla's mission to improve the internet for everyone.

What we offer

Mozilla offers a unique opportunity to work in a mission-driven organization that prioritizes user privacy and open-source principles. You will be part of a diverse team that values collaboration and innovation. We provide flexible work arrangements, allowing you to work remotely while still being part of a vibrant community of engineers. Our commitment to professional development means you will have access to resources and opportunities to grow your skills and advance your career.

Join us in shaping the future of the web and making a positive impact on how people interact with technology. We encourage you to apply even if your experience doesn't match every requirement — your passion for technology and commitment to improving the user experience are what matter most.