Software Engineer, Release Engineering

Kibbi Technologies Inc.; Toronto; On-site; CAD 74,000 - 110,000; Full time

Benefits offered by this job

Bonus plans

Medical, dental, and vision coverage

Retirement contributions

Home office stipend

Professional development budget

Well‑being stipend

Parental leave

Employee referral program

Other benefits

Job summary

Mozilla Corporation is seeking an engineer for Release Engineering (RelEng) to ensure reliable delivery of our software products across platforms and locales. You will help scale the build and deployment pipeline and collaborate with a global team to ship security fixes swiftly.

The role emphasizes release automation, cross‑platform development, and close collaboration with senior engineers to continuously improve our deployment processes during business hours.

Qualifications

• Bachelor's degree in computer science or related field or equivalent work experience.
• Minimum of 2 years of experience in an object-oriented programming language (preferably Python).
• Passionate about CI/CD pipelines and release automation.
• Experience with cloud resources (AWS, GCP, or Azure).
• Comfort developing in Windows, macOS, and Linux; shell scripting experience.
• Experience with distributed teams across time zones.
• Ability to improve existing code bases and tools.

Responsibilities

• Write scalable software with thousands of tasks for building, testing, and releasing Firefox daily.
• Collaborate with senior engineers to improve developer experience and implement changes.
• Work with a geographically distributed team across North America and Europe.
• Participate in code reviews and provide/receive feedback.
• Respond to critical service outages during normal hours (no on-call rotation).

Skills

Python

CI/CD

Cloud computing

Shell scripting

Distributed teams

Cross-platform

Education

Bachelor's degree in CS or related

Tools

AWS

GCP

Azure

Job description

Why Mozilla?

Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we’re doing this while never losing our focus on our core mission – to make the internet better for people.

About This Team And Role

At Mozilla, our Release Engineering team (RelEng) plays a crucial role in ensuring the seamless and reliable delivery of our world-class software products. As a key part of our engineering infrastructure, RelEng is responsible for the continuous deployment of our products, ensuring they reach our users efficiently and without interruption. For instance, we can reliably ship a security fix to > 200M users across different platforms and > 100 locales in under 24 hours.

RelEng has an expertise in configuring and optimizing our build and deployment pipeline. In order to provide a faster and more reliable experience for Firefox developers, RelEng is looking for an engineer who can help optimize and maintain the pipeline.

If you are passionate about release automation, the Release Engineering team at Mozilla is the place for you. Join us and be a part of a team that is making a significant impact on the web and beyond.

What You’ll Do

• Write software that scales - tens of thousands of tasks are run to build, test, and release Firefox every single day
• Collaborate with senior+ engineers to improve the developers’ experience, then implement the improvements.
• Work with a geographically-distributed development team between North America and Europe
• Collaborate with others by requesting and providing code reviews
• Respond to critical service outages (during normal working hours - no on call rotation is required)

What You’ll Bring

• You have a Bachelor's degree in computer science (or related programs) or equivalent work experience
• You have a minimum of 2 years of experience working in an object-oriented programming (OOP) language (preferably Python)
• You are passionate about CI/CD pipelines
• You have some previous experience on using cloud resources (e.g. on AWS, GCP, or Azure)
• You feel comfortable developing in Windows, macOS, and Linux environments, experience with shell scripting
• You have worked on a team distributed across time zones
• You enjoy getting familiar and improving existing code bases and tools
• Commitment to our values:
  • Welcoming differences
  • Being relationship-minded
  • Practicing responsible participation
  • Having grit

What You’ll Get

• 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)

About Mozilla

Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.

Commitment to diversity, equity, inclusion, and belonging

Mozilla understands that valuing diverse creative practices and forms of knowledge are crucial to and enrich the company’s core mission. We encourage applications from everyone, including members of all equity-seeking communities, such as (but certainly not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientations, gender identities, and expressions.

We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at [e-mail] to request accommodation.

We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws. Mozilla will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.

Hiring Ranges

Canada Tier 1 Locations

$82,000—$110,000 CAD

Canada Tier 2 Locations

$74,000—$99,000 CAD