Senior Software Engineer, Add-Ons

Responsibilities

• Deliver major features and architectural improvements across automated moderation pipelines, Reviewer tools, and DevHub.
• Build full-stack features using React/TypeScript frontends, Django backends, and MySQL.
• Create observability systems and data-backed insights.
• Improve platform reliability through deployments, monitoring, and incident response on Google Cloud.
• Develop submission flows, trust and safety signals, ecosystem moderation tools, and platform modernization initiatives.
• Resolve user- and developer-impacting bugs and incidents.
• Collaborate with designers, product managers, QA, reviewers, developer relations, leadership, and community contributors.
• Provide peer feedback, share knowledge, contribute to code reviews, and participate in open-source discussions.

Requirements

• Experience building modern web applications.
• Strong experience with Python/Django or similar backend frameworks.
• Understanding of web security principles and practices.
• Strong collaboration and communication skills in a distributed team environment.
• Ability to navigate ambiguity, explore solutions, and shape direction in new problem spaces.
• Commitment to Mozilla’s stated values.

Benefits

• Performance-based bonus plans for eligible employees.
• Medical, dental, and vision coverage.
• Retirement contributions with 100% immediate vesting.
• Quarterly company wellness days, country-specific holidays, and a birthday day off.
• One-time home office stipend and annual professional development budget.
• Quarterly well-being stipend and paid parental leave.
• Employee referral bonus program and additional benefits such as life/AD&D insurance, disability coverage, and EAP, varying by country.