What you'll be doing:

Design, build, deploy, and operate software and systems supporting Firefox engineering.
Contribute to developer tooling, CI/CD, workflow automation, and AI-assisted development tools.
Own complex technical problems end-to-end across software, cloud, and operational layers, improving reliability, performance, observability, and cost efficiency.
Work with Firefox engineering, Cloud Engineering, IT, and other teams to solve cross-disciplinary problems.
Use telemetry, metrics, and data analysis to investigate problems and guide engineering decisions.
Contribute to architecture and technical strategy by identifying recurring problems and scalable solutions.

Requirements:

Strong programming skills in languages such as Python or JavaScript/TypeScript; experience with C++ or Rust is beneficial.
Experience building, deploying, and operating production systems in cloud environments, including infrastructure as code tools like Terraform.
Knowledge across several areas including CI/CD, containers and orchestration, networking, databases, observability, or developer tooling.
Experience using data, telemetry, and metrics to troubleshoot and make technical decisions.
Familiarity with modern AI-assisted development tools and an understanding of their capabilities and limitations.
Ability to independently handle unfamiliar systems and maintain sustainable operational states.
Strong cross-disciplinary collaboration and communication skills.
Combination of hands-on engineering, systems thinking, and long-term technical judgment.

Generous performance-based bonus plans available to all eligible employees.
Comprehensive medical, dental, and vision coverage.
Generous retirement contributions with 100% immediate vesting regardless of employee contributions.
Quarterly all-company wellness days for collective pause and recharge.
Country-specific holidays plus an additional day off for your birthday.
One-time home office stipend and annual professional development budget.
Quarterly well-being stipend and considerable paid parental leave.
Employee referral bonus program and additional benefits such as life/AD&D, disability, and EAP, varying by country.