Senior Software Engineer

Summary

Join Mozilla's Ads Engineering team and contribute to the development of MAJC, a core infrastructure component for client-side ad fetching, rendering, and measurement. You will design and deliver reusable components, collaborate with various teams (Product, Ad Ops, Data Science), implement privacy-preserving features, and work with front-end teams to support and extend existing systems. This role requires 5+ years of software engineering experience, proven ability to lead complex projects, expertise in Rust and Python, and familiarity with front-end technologies. Mozilla offers a comprehensive benefits package including generous performance-based bonuses, rich medical coverage, generous retirement contributions, wellness days, paid time off, a home office stipend, a professional development budget, a well-being stipend, and considerable paid parental leave.

Requirements

• 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
• 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

Responsibilities

• 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

Preferred Qualifications

Experience with telemetry, privacy-preserving analytics, and/or programmatic advertising

Benefits

• 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)