Senior Software Engineer, 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 team at Mozilla builds core infrastructure to support ethical, privacy-forward advertising across Mozilla's products. MAJC is our internal component for client-side ad fetching, rendering, and measurement across Firefox, Pocket, MDN, and beyond.

In this role, you’ll contribute to the development of MAJC using Rust and Python to create a scalable, privacy-preserving advertising component that enables consistent, performant ad experiences across Mozilla’s properties. You and your team will be the subject matter experts when it comes to advertising, providing guidance, and shepherding various product teams across Mozilla.

What you’ll do:

• Design and deliver reusable components within the Mozilla Ads products that support multiple product teams and surface areas
• Collaborate closely with Product, Ad Ops, and Data Science to enable enriched measurement, feedback reporting, and experimentation
• Implement privacy-preserving features in our Mozilla Ads products, contributing to Mozilla’s vision for ethical advertising
• Work with front-end teams across Mozilla to support and extend existing systems to apply innovative ways and technologies in reaching Mozilla’s advertising goals
• Help translate product and engineering strategy into actionable tasks and early prototypes, providing feedback where appropriate

What you’ll bring:

• 5+ years of overall software engineering experience
• Proven ability to successfully lead and ship complex software projects
• Experience in Rust and Python
• Familiarity with one of the following front-end technologies: JavaScript, React, or Node.js
• Experience with telemetry, privacy-preserving analytics, and/or programmatic advertising is a plus.
• An interest and ability to work in a distributed, cross-functional environment (which requires good asynchronous written communication skills as well as good verbal communication skills)
• Commitment to our values:
• Welcoming differences
• Being relationship-minded
• Practicing responsible participation
• Having grit

What you’ll get:

• 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)
• Quarterly all-company wellness days where everyone takes a pause together
• Country specific holidays plus a day off for your birthday
• 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

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. Join us to work on the web as the platform and help create more opportunity and innovation for everyone online. We’re not a normal tech company. The things we create prioritize people and their privacy over profits. We exist to make the internet a healthier, happier place for everyone.

Commitment to diversity, equity and inclusion

Mozilla believes in the value of diverse creative practices and forms of knowledge, and knows diversity, equity and inclusion 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 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. Please contact us at [email protected] to request accommodation.

We are an equal opportunity employer. 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. Mozilla will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.

Group: D

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ReqID: R2803