Software Engineer, Release Engineering

Mozilla

Mozilla release engineer optimizing Firefox build, test, and deployment pipelines at global scale. Improving developer experience, maintaining automation, and responding to critical service outages without an on-call rotation.

Posted 8/17/2026full-timeRemote • 🇨🇦 CanadaJuniorMid-LevelWebsite

Core Competencies

Role fit

Core Competencies

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Proficient in Object-Oriented Programming with a focus on Python, experienced in CI/CD pipelines, and skilled in utilizing cloud resources such as AWS, GCP, or Azure. Demonstrates the ability to collaborate effectively with distributed teams and improve existing code bases.

Highest-signal resume keywords

Object-Oriented ProgrammingPython DevelopmentCI/CD PipelinesCloud Resources (AWS, GCP, Azure)Shell Scripting

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Object-Oriented ProgrammingPython DevelopmentShell ScriptingCI/CD Pipelines

Soft Skills

CollaborationRelationship-MindedGrit

Tools & Technologies

AWSGCPAzureWindowsMacOSLinux

Certifications & Qualifications

Bachelor's Degree in Computer Science

Industry Keywords

Software DevelopmentCode ReviewDistributed TeamsDeveloper Experience

Tech Stack

Tools & technologies

AWSAzureCloudGoogle Cloud PlatformLinuxMacOSPythonShell Scripting

About the role

Key responsibilities & impact

Write software that scales across tens of thousands of tasks used to build, test, and release Firefox every day
Collaborate with senior+ engineers to improve the developer experience and implement improvements
Work with a geographically distributed development team across North America and Europe
Request and provide code reviews
Respond to critical service outages during normal working hours; no on-call rotation is required

Requirements

What you’ll need

Bachelor's degree in computer science or related programs, or equivalent work experience
Minimum of 2 years of experience working in an object-oriented programming language, preferably Python
Passion for CI/CD pipelines
Previous experience using cloud resources such as AWS, GCP, or Azure
Comfortable developing in Windows, macOS, and Linux environments
Experience with shell scripting
Experience working on a team distributed across time zones
Enjoyment of becoming familiar with and improving existing code bases and tools
Commitment to Mozilla's values: welcoming differences, being relationship-minded, practicing responsible participation, and having grit

Benefits

Comp & perks

Generous performance-based bonus plans to all eligible employees - we share in our success as one team
Rich medical, dental, and vision coverage
Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)
Quarterly all-company wellness days where everyone takes a pause together
Country specific holidays plus a day off for your birthday
One-time home office stipend
Annual professional development budget
Quarterly well-being stipend
Considerable paid parental leave
Employee referral bonus program
Other benefits (life/AD&D, disability, EAP, etc. - varies by country)