Performance Engineer

Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. 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. The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distributeopen-sourcesoftware that enables people to enjoy the internet on their terms. About This Team And Role The Localization Team manages the infrastructure that powers localization across all Mozilla products and services, and supports our global community of volunteer localizers. As a Senior Engineer, you’ll contribute to a range of Mozilla localization projects and technologies — from Pontoon, our Django-based Translation Management System, to open source libraries like moz-l10n. You’ll contribute to architectural discussions and help drive feature development within the team. At Mozilla, Senior Engineers are expected to work independently on well-defined projects, collaborate closely with peers, and play a key role in delivering high-quality software that advances the team’s goals and Mozilla’s mission. Contribute to the development of Python and JavaScript libraries (such as moz-l10n) and tools that support Mozilla’s localization infrastructure. Collaborate with engineers and program managers to design and implement new Pontoon features, across both the front-end and back-end. Improve internationalization within the Firefox codebase to make features more adaptable and accessible across languages and regions. Strong experience developing and maintaining web applications and tools using Python and JavaScript. Solid understanding of web technologies, APIs, and modern development workflows. Ability to collaborate effectively in a distributed team, across time zones and disciplines. Fluency in another language and understanding of linguistic diversity (e.g., 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) One-time home office stipend Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online. 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. com to request accommodation. 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. Remote Netherlands €