58K–77K EUR / year
Senior Software Engineer, Add-Ons
BackendRemote — Spain
Published on 2026-09-24
These details were extracted automatically from the original listing. They may not be complete or fully up to date — it's worth checking the original job post.
About this role
The Senior Software Engineer will work on the Firefox add-ons ecosystem, focusing on enhancing developer tools and review processes. You will collaborate with various teams to deliver features, modernize the platform, and ensure a first-class developer experience.
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
PythonDjangoMySQLReactTypeScript
What you'll do
- Deliver major features and architectural improvements
- Establish and maintain engineering standards
- Create observability systems and insights
- Provide peer feedback and knowledge sharing
- Improve CI/CD pipelines
- Write clear technical documentation
What we're looking for
- Experience with Python/Django production applications
- Improving production software reliability
- Strong CI/CD experience
- Designing automated testing workflows
- Understanding observability as an engineering discipline
- Debugging complex production issues
Nice to have
- Experience with Google Cloud and Kubernetes
- Infrastructure-as-code tooling experience
- Contributions to open source projects
Benefits
- Generous performance-based bonuses
- Rich medical, dental, and vision coverage
- Generous retirement contributions
- Quarterly wellness days
- Paid parental leave
- Professional development budget