[Hiring] Backend Software Engineer @Mozilla

Role 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.

• 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

Qualifications

• 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
• Exposure to data pipelines, analytics systems, or ad-tech concepts is a plus, but not required
• Some experience working with modern frontend frameworks (such as React) is a bonus
• 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

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)

Company Description

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. 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.