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Mozilla Logo Mozilla · IT - Software Development

Backend Software Engineer, Ads

United States; Canada 95100.00 - 150700.00 USD; CAD / Year · Job Posted March 03, 2026
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Job Description

The Ads Engineering organization at Mozilla builds shared infrastructure that supports ethical, privacy-forward advertising across Mozilla’s products. Our work spans backend systems that enable advertising inventory management, forecasting, campaign execution, measurement, and reporting across all Mozilla properties. As a Backend Software Engineer on Ads Engineering, you’ll contribute to backend services, data integrations, and internal tooling that help operational and business partners work more efficiently and reliably. You’ll work alongside engineers, product managers, and cross-functional stakeholders to deliver well-scoped features and improvements, while learning the domain and growing your impact over time.

Job Responsibility

  • Build and maintain backend services that support advertising functionality across Mozilla products
  • Implement APIs, data flows, and integrations between internal systems and external partners used in Ads workflows
  • Contribute to systems that prioritize correctness, reliability, and scalability in a privacy-conscious environment
  • Work with product managers, engineers, and cross-functional partners to deliver well-scoped features and improvements
  • Participate in code reviews, design discussions, and on-call or operational responsibilities as part of the team
  • Incrementally take on more complex problems as you develop familiarity with Ads systems and domain concepts

Requirements

  • 3+ years of professional software engineering experience
  • Experience building backend systems using languages such as Go, Python, or Rust
  • Familiarity with APIs, service-oriented architectures, and system integrations
  • Ability to work effectively in a distributed, asynchronous environment
  • Clear written and verbal communication skills
  • Comfort working on well-defined problems while navigating some ambiguity with support from teammates
  • Commitment to our values: Welcoming differences
  • Being relationship-minded
  • Practicing responsible participation
  • Having grit

Nice to have

  • Exposure to data pipelines, analytics systems, or ad-tech concepts
  • Some experience working with modern frontend frameworks (such as React)

What we offer

  • Generous performance-based bonus plans
  • Rich medical, dental, and vision coverage
  • Generous retirement contributions with 100% immediate vesting
  • Quarterly all-company wellness days
  • 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)
  • Flexible work environment (majority of Mozillians work remotely)
  • Industry-leading paid parental leave (up to 26 weeks of fully paid leave for childbearing parents and up to 12 weeks for non-childbearing parents)
  • Reimbursement for professional development (up to $3,000/year)
  • A work setup including the latest hardware and software of your choice
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