Senior Software Engineer, Add-Ons

Mozilla
Spain, Canada
Workplace: RemoteFull timeEUR 58,000 - 77,000Function: Software EngineeringSkills: ["Collaboration","Communication","Technical writing","Peer feedback","Knowledge sharing"]

Build and evolve the add-ons.mozilla.org ecosystem by delivering major features and architectural improvements across moderation pipelines, Reviewer tools, and DevHub. Establish engineering standards, improve observability, and strengthen CI/CD using declarative pipeline-as-code. Work with Python/Django, MySQL, and React/TypeScript plus asynchronous processing to develop, deploy, and operate production services, while collaborating cross-functionally and contributing documentation and improvements through iterative delivery.

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FursaFursa
Mozilla
Mozilla
16 hours ago

Senior Software Engineer, Add-Ons

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Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 1 hour agoStatus: Live

Job Summary

Build and evolve the add-ons.mozilla.org ecosystem by delivering major features and architectural improvements across moderation pipelines, Reviewer tools, and DevHub. Establish engineering standards, improve observability, and strengthen CI/CD using declarative pipeline-as-code. Work with Python/Django, MySQL, and React/TypeScript plus asynchronous processing to develop, deploy, and operate production services, while collaborating cross-functionally and contributing documentation and improvements through iterative delivery.
Location: Spain, 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 definition of done.
  • •Create robust observability systems and data-backed insights to improve reliability and operations.
  • •Improve CI/CD pipelines using declarative pipeline-as-code approaches that enhance reproducibility, testing, and review.
  • •Develop and operate internal platform systems enabling safe development, deployment, monitoring, and incident handling for production services.

Pay and Benefits

Salary: EUR 58,000 - 77,000
Perks:Health InsuranceDentalVisionPensionHome OfficeLearning BudgetWellness StipendPaid Leave

Key Requirements

  • •Strong hands-on experience building and maintaining production applications with Python/Django.
  • •Experience operating and improving production software systems with an emphasis on reliability and safe delivery.
  • •Strong experience with CI/CD and treating pipelines and infrastructure declaratively as code.
  • •Experience designing or improving automated testing and deployment workflows, including integration testing and staged or progressive delivery.
  • •Strong understanding of observability (metrics, logging, tracing, SLOs) and actionable alerting.
Experience:Open source
Skills:CollaborationCommunicationTechnical writingPeer feedbackKnowledge sharing
Tech Stack:PythonDjangoMySQLReactTypeScriptCI/CDKubernetesGoogle CloudInfrastructure-as-codePipeline-as-codeObservabilityMetricsLoggingTracingService-level objectivesAsynchronous processing

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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