Engineering Manager, Ads

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. The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms. About this team and role: The Ads Engineering organization at Mozilla builds privacy-respecting advertising systems that support Mozilla’s products and business while aligning with our mission and values. Our teams focus on reliable, scalable systems that enable advertising experiences across Mozilla products. As an Engineering Manager on Ads Engineering, you will lead a team of software engineers working on Firefox Suggest Ads , the sponsored suggestion experiences within Firefox Suggest. This team builds and operates backend services, partner integrations, experimentation capabilities, and product-facing systems that help deliver relevant sponsored suggestions in Firefox while respecting user privacy and product quality expectations. You’ll be responsible for building a healthy, effective team; partnering closely with Product, Data, Privacy, Policy, Revenue, and Firefox engineering stakeholders; and ensuring your team delivers high-quality software in support of Ads Engineering goals. This role balances people leadership, execution, and collaboration, with a strong emphasis on mentoring engineers, navigating ambiguity, delivering results, and fostering a positive, inclusive team culture. What you’ll do: Mentor, support, and develop a team of software engineers, helping them grow in impact and craft Lead your team through the delivery of Firefox Suggest Ads initiatives, including backend services, partner integrations, experimentation, measurement, reliability improvements, and product-facing integrations where requirements may evolve as privacy, policy, user experience, and business constraints become clearer Partner with product managers and cross-functional stakeholders to navigate ambiguity, particularly where user data, privacy expectations, or policy considerations shape technical and product decisions Ensure the software your team builds is reliable, maintainable, and aligned with Mozilla’s quality, security, and privacy standards Create an environment where engineers can do their best work, including healthy team processes, clear communication, and support through uncertainty Participate in hiring and onboarding to grow and strengthen the team over time What you’ll bring: 6+ years of professional software engineering experience, including at least 2 years of people management experience A track record of leading teams that successfully deliver production software Strong judgment around prioritization, execution, and balancing short-term delivery with long-term sustainability Familiarity with modern software development practices, including planning, issue triage, and delivery workflows Ability to collaborate effectively with product managers and partner teams to deliver outcomes Experience supporting engineers with varied skill sets, backgrounds, and levels of experience Comfort working in a distributed, asynchronous environment Experience in search, ads, recommendations, marketplaces, browser/client-platform integrations, or other privacy-sensitive product domains — or demonstrated ability to quickly learn complex domains where user trust, data practices, and business outcomes must be balanced Commitment to

Our Values

• 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.

• Highlight any prior experience building ad‑tech or privacy‑sensitive systems in your résumé; concrete project examples stand out.
• Prepare to discuss how you balance rapid feature delivery with strict privacy and security standards during the interview.
• Showcase mentorship stories: describe how you helped engineers grow technical depth or navigate ambiguous problems.
• Include a short portfolio or GitHub links that demonstrate backend service design, API work, or experimentation frameworks.
• Research Mozilla’s open‑source contributions and be ready to explain why their mission aligns with your career goals.
• When negotiating, reference typical remote‑work allowances (home office stipend, internet reimbursement) even if not listed.
• Watch for red flags such as vague expectations around on‑call duties or unclear reporting lines; ask clarifying questions early.