Remote Site Reliability Engineer — Cloud & Tooling

Mozilla; United Kingdom; Remote; GBP 81,000 - 108,000; Full time

Benefits offered by this job

Bonus plans

Medical, dental, vision coverage

Retirement contributions with 100% v.

Wellness days

Country holidays + birthday day off

Home office stipend

Annual professional development budget

Parental leave

Employee referral program

Job summary

Mozilla is seeking an experienced software engineer to work on tools and systems supporting Firefox engineering. This broad role covers internal engineering systems, developer tooling, workflow automation, and production infrastructure.

You will help teams succeed in a model where platforms are shared and teams own their applications, building tooling and automation to ease operations. You will contribute to architecture, telemetry, and data-driven decisions, across projects and domains, with a

Qualifications

• Strong programming skills in Python, JavaScript/TypeScript; C++/Rust helpful.
• Experience with cloud production systems and IaC (Terraform).
• Experience across CI/CD, containers/orchestration, networking, databases, observability, or developer tooling.

Responsibilities

• Design, build, deploy, and operate software and systems for 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.
• Work with multiple teams to solve problems spanning technical and organizational boundaries.

Skills

Python

JavaScript/TypeScript

C++

Rust

Terraform

CI/CD

Containers

Networking

Databases

Observability

Dev tooling

Telemetry

AI tooling

Tools

Terraform

Job description

Mozilla is seeking an experienced software engineer to work on tools and systems supporting Firefox engineering. This broad role covers internal engineering systems, developer tooling, workflow automation, and production infrastructure.

You will help teams succeed in a model where platforms are shared and teams own their applications, building tooling and automation to ease operations. You will contribute to architecture, telemetry, and data-driven decisions, across projects and domains, with a