Senior Software Engineer, Add-Ons

About this role

The Senior Software Engineer will contribute to the Add-ons ecosystem by developing features and improving the platform's architecture. Responsibilities include managing reviewer tools, building automated moderation systems, and enhancing CI/CD pipelines to deliver reliable software. The role emphasizes collaboration with cross-functional teams and continuous improvement in engineering practices.

About the company

Mozilla builds open-source products and technologies, including Firefox, that prioritize privacy, security, and an open internet.

The team

Add-ons engineering team

Stack

What you'll do

• Deliver major features and architectural improvements
• Establish and maintain engineering standards
• Create robust observability systems
• Provide peer feedback and knowledge sharing
• Build systems for safe software development and deployment
• Improve CI/CD pipelines
• Write clear technical documentation
• Collaborate with designers and product managers

What we're looking for

• Strong hands-on experience with Python/Django
• Experience with reliable production software systems
• Strong CI/CD experience
• Experience in automated testing and deployment workflows
• Understanding of observability practices
• Experience with internal tools used by other teams
• Ability to work with unfamiliar codebases
• Strong technical writing skills

Nice to have

• Experience with Google Cloud and Kubernetes
• Experience with infrastructure-as-code tooling
• Established SLOs and error-budget practices
• Experience with chaos engineering
• Contributions to open source projects

Benefits

• Generous performance-based bonus
• Rich medical, dental, and vision coverage
• Generous retirement contributions
• Quarterly wellness days
• Paid parental leave