Staff Site Reliability Engineer Tools

Remote Canada opportunity for a Staff Site Reliability Engineer skilled in software development, production systems, and operational problem-solving. Support Firefox engineering through reliable tools and systems.Mozilla seeks an experienced, versatile software engineer for internal engineering systems, developer tooling, workflow automation, and infrastructure. You will deploy and operate production systems while helping teams establish sustainable standards, patterns, and automation. Open-source contribution is an important part of the work.Key Responsibilities:
Design, build, deploy, and operate Firefox engineering systemsDevelop CI/CD, workflow automation, and AI-assisted toolsImprove reliability, performance, observability, and cost efficiencyUse telemetry and metrics to guide engineering decisionsShape architecture and technical strategy across teamsRequirements:
Strong programming skills in Python or JavaScript/TypeScriptProduction systems experience in cloud environmentsInfrastructure as code experience, including TerraformExperience across CI/CD, containers, networking, or observabilityFamiliarity with modern AI-assisted development toolsBring software engineering, cloud operations, automation, and systems thinking to Mozilla’s Firefox engineering infrastructure in Remote Canada.
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