Staff Site Reliability Engineer, Tools & Systems

Requirements

  • Strong programming skills in Python or JavaScript/TypeScript; experience with C++ or Rust is useful.
  • Experience building, deploying, and operating production systems in cloud environments using infrastructure as code like Terraform.
  • Knowledge across areas such as CI/CD, containers and orchestration, networking, databases, observability, or developer tooling.
  • Experience using telemetry, metrics, and data analysis to investigate problems and guide decisions.
  • Familiarity with modern AI-assisted development tools and understanding their capabilities and limitations.
  • Comfortable working across projects and technical domains with focused ownership.
  • Ability to communicate openly and help others build skills in unfamiliar technical areas.

What you'll be doing

  • Design, build, deploy, and operate software and systems supporting Firefox engineering.
  • Contribute to developer tooling, CI/CD pipelines, workflow automation, and AI-assisted development tools.
  • Own complex technical problems end-to-end, improving reliability, performance, observability, and cost efficiency.
  • Collaborate with Firefox engineering, Cloud Engineering, IT, and other teams to solve cross-disciplinary problems.
  • Use telemetry, metrics, and data to investigate issues and guide engineering decisions.
  • Contribute to architecture and technical strategy, identifying recurring problems and scalable solutions.
  • Engage in open-source software development and contribute back to the broader community.

Nice to haves

  • Experience with C++ or Rust programming languages.
  • Strong systems thinking combined with hands-on engineering skills and long-term technical judgment.
  • Ability to translate between software, infrastructure, and operational concerns.

Perks and benefits

  • Generous performance-based bonus plans for eligible employees.
  • Comprehensive medical, dental, and vision coverage.
  • Generous retirement contributions with immediate 100% vesting regardless of personal contributions.
  • Quarterly all-company wellness days.
  • Country-specific holidays plus a paid day off for your birthday.
  • One-time home office stipend.
  • Annual professional development budget and quarterly well-being stipend.
  • Considerable paid parental leave.
  • Employee referral bonus program.
  • Additional benefits such as life insurance, disability coverage, and employee assistance programs (varies by country).
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