Senior Software Engineer, Add-Ons

Mozilla
France, Canada
Workplace: RemoteFull timeEUR 53,000 - 71,000 annuallyFunction: Software EngineeringSkills: ["Collaboration","Communication","Technical writing","Peer feedback","Mentoring"]

Build and evolve Mozilla’s Add-ons ecosystem (addons.mozilla.org) by delivering major features and architectural improvements across moderation pipelines, Reviewer tools, and DevHub. Help raise engineering standards for production readiness, runbooks, incident response, on-call, and definitions of done. Improve observability and CI/CD pipeline-as-code using declarative approaches. Work with Python/Django, MySQL, React/TypeScript, and async processing to modernize platform reliability at scale.

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FursaFursa
Mozilla
Mozilla
17 hours ago

Senior Software Engineer, Add-Ons

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Last checked: 1 hour agoStatus: Live

Job Summary

Build and evolve Mozilla’s Add-ons ecosystem (addons.mozilla.org) by delivering major features and architectural improvements across moderation pipelines, Reviewer tools, and DevHub. Help raise engineering standards for production readiness, runbooks, incident response, on-call, and definitions of done. Improve observability and CI/CD pipeline-as-code using declarative approaches. Work with Python/Django, MySQL, React/TypeScript, and async processing to modernize platform reliability at scale.
Location: France, Canada
Workplace: Remote
Employment Type: Full time
Job Function: Software Engineering
Seniority: Mid level

Key Responsibilities

  • •Deliver major features and architectural improvements across the Add-ons stack, including moderation pipelines, Reviewer tools, and DevHub.
  • •Establish and maintain engineering standards for code review, production readiness, runbooks, incident response, on-call practices, and coding conventions.
  • •Create robust observability systems and data-backed insights to improve production reliability.
  • •Improve and modernize CI/CD pipelines using declarative, pipeline-as-code approaches with reproducible and testable changes.
  • •Collaborate across engineering, designers, product managers, QA, and community contributors to deliver end-to-end improvements and contribute in the open.

Pay and Benefits

Salary: EUR 53,000 - 71,000 annually
Perks:Health InsuranceDentalVisionLearning BudgetParental LeaveHome Office

Key Requirements

  • •Strong hands-on experience building and maintaining production applications with Python/Django.
  • •Experience operating and improving production systems where reliability and safe delivery matter.
  • •Strong experience with CI/CD systems and treating pipelines/infrastructure declaratively as code.
  • •Experience designing or improving automated testing and deployment workflows, including integration testing and staged/progressive delivery.
  • •Strong understanding of observability (metrics, logging, tracing, SLOs) and actionable alerting.
Skills:CollaborationCommunicationTechnical writingPeer feedbackMentoring
Languages:English
Tech Stack:PythonDjangoMySQLReactTypeScriptCI/CDInfrastructure as codePipeline-as-codeObservabilityMetricsLoggingTracingService-level objectivesKubernetesGoogle Cloud

Company Brief

Mozilla
Mozilla is a mission-driven organization that builds open-source internet products (notably the Firefox browser) and advocates for an open, private, and secure web through software, research, and community programs.
Industry: Enterprise Software
Company Size: Large (251 to 1,000 employees)
Growth: Nonprofit & NGO
Headquarters: San Francisco, United States
Founded: 1998
Glassdoor
Glassdoor: 2.9
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