Lead and develop a software engineering team responsible for Firefox Suggest Ads backend services, partner integrations, experimentation/measurement, reliability, and product-facing systems. Collaborate with Product, Data, Privacy, Policy, Revenue, and Firefox engineering; mentor engineers; ensure reliability, maintainability, security, and privacy standards; participate in hiring and onboarding. Requires 6+ years engineering experience including 2+ years people management. Salary ranges provided for US tiers.

Lead and develop a software engineering team responsible for Firefox Suggest Ads, delivering backend services, partner integrations, experimentation and measurement, and product-facing integrations. Partner closely with Product, Data, Privacy, Policy, Revenue, and Firefox engineering stakeholders; ensure reliable, maintainable software that meets Mozilla's security and privacy standards. Requires 6+ years of software engineering experience and at least 2 years of people management experience.

Lead a software engineering team building privacy-respecting advertising systems for Firefox Suggest Ads, including backend services, partner integrations, experimentation and measurement, and product-facing integrations. Responsibilities include mentoring and growing engineers, delivering reliable and maintainable production software, collaborating with Product, Data, Privacy, Policy, Revenue and Firefox engineering, and participating in hiring. Requires experience balancing privacy, policy, user trust, and business outcomes.

Mozilla seeks a student intern for the Gecko networking team to work on Firefox's networking stack and network-related Web APIs (e.g., Fetch, WebTransport). Candidates should have experience programming in Rust and/or C/C++, familiarity with memory safety and test-driven development, and an interest in networking/systems programming. Position is remote in Germany (must be enrolled at a German university) with occasional travel to the Berlin office. Hiring range for Germany: €28.00 EUR per hour.

Hands-on Senior Engineering Manager role for Thunderbolt: manage engineers and contractors, contribute to codebase, define production-ready standards, establish planning/release practices, partner with product and design, improve engineering practices (CI/CD, testing, documentation), and support scaling the product for enterprise adoption. Remote role for candidates residing and authorized to work in Canada.

Lead a senior engineering team for Thunderbolt, moving the project from R&D to production readiness. Responsibilities include managing engineers and contractors, contributing to the codebase, establishing release and engineering practices, and partnering across product and design to deliver a secure, privacy-respecting, enterprise-grade open-source AI product. Requires 15+ years software experience and 5+ years managing technical teams.

Full-time, fully remote Senior Engineering Manager role leading a senior engineering team for Thunderbolt (open-source AI product). Responsible for engineering execution, people management, release discipline, code quality, and scaling the product toward enterprise readiness. Requires 15+ years software development experience and 5+ years managing technical teams; employer does not provide visa sponsorship.

Lead a geographically distributed frontend engineering team for Firefox Desktop (Windows, Linux, macOS). Own delivery, engineering processes, hiring and development; collaborate with Product, UX, QA, Operations and Data Science. Requires a software engineering background, experience delivering user-facing front-end products, and 4+ years leading engineers. Salary ranges provided for Canada (CAD).