Senior Software Engineer, Add-Ons (Fully Remote)

Mozilla; United States; Remote; USD 120,000 - 160,000; Full time

Job summary

Mozilla Corporation is seeking an Add-ons engineer to help build and modernize the Firefox add-ons platform. You will work on the DevHub, Reviewer tools, and automated moderation systems that serve millions of users and developers.

You will architect features across Python/Django, React/TypeScript, and async processing, and help raise engineering standards for code review, reliability, and incident response. The role emphasizes collaboration in a distributed team.

Qualifications

• Strong hands-on experience with Python/Django in production environments.
• Experience with Google Cloud and infra-as-code tooling.
• Excellent collaboration and communication in a distributed team.

Responsibilities

• Architect and implement features across Python/Django, React/TypeScript, and asynchronous processing.
• Establish engineering standards for code review, production readiness, and incident response.
• Improve CI/CD pipelines with declarative, pipeline-as-code approaches and observability.

Skills

Python/Django experience

React/TypeScript

Distributed team collaboration

Tools

Google Cloud

Infrastructure-as-code tooling

Job description

About the Team and Role

• Join the Add-ons engineering team to build and modernize the platform supporting the Firefox add-ons ecosystem.
• Work on the DevHub, Reviewer tools, and automated moderation systems that serve millions of users and developers.
• Drive architectural improvements and deliver features that shape the future of add-ons.

Key Responsibilities

• Architect and implement features across Python/Django, React/TypeScript, and asynchronous processing systems.
• Establish engineering standards for code review, production readiness, and incident response.
• Improve CI/CD pipelines with declarative, pipeline-as-code approaches and robust observability.

Qualifications and Experience

• Strong hands-on experience with Python/Django in production environments.
• Experience with cloud platforms like Google Cloud and infrastructure-as-code tooling.
• Excellent collaboration and communication skills in a distributed team.

Culture and Values

• Mozilla is committed to diversity, equity, and inclusion, welcoming applicants from all backgrounds.
• We embrace a mission-driven culture focused on making the internet more accessible and open.
• We offer competitive benefits, including medical, dental, and generous parental leave.

Mozilla Corporation is a non-profit-backed technology company that has shaped the internet for over 25 years, known for products like Firefox. With over 225 million monthly users, we're a mission-driven organization committed to making the internet better for people, funded by the Mozilla Foundation.