Golang / Go Job: Senior Backend Engineer

Senior Backend Engineer at Mozilla Corporation

Remote › 🇨🇦 100% remote position in Canada   (Posted Jul 31 2025)

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Job description
Team:
Strategy, Operations, Data & Ads
Locations:
Remote Canada

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.
The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms.

What is a Senior Software Engineer at Mozilla?

A Senior Software Engineer is the next level from a Software Engineer. At Mozilla, this role can vary, but is typically someone who is largely self directed after work is assigned and is advanced in their domain. They help team members get information they need to be successful while also being the go-to person for peer reviews in their domain. They have a solid understanding of the product strategy and can recommend solutions to critical issues when needed, assist junior engineers in risk management and escalation, and advocate for and implement changes that affect their team. A Senior Software Engineer actively seeks opinions and ideas from their team members, including those with varied experiences and perspectives to improve more collective results.

About this team and role:

We’re growing the Mozilla Ads product team, focused on display advertising in Mozilla products that is privacy-respecting and values-aligned. You will be responsible for designing, building, and owning the core backend systems that support advertising in clients (Firefox, MDN, Pocket, etc). You and your team will be the subject matter experts when it comes to advertising, providing guidance and shepherding to various product teams across Mozilla.

What you’ll do:

Participate in development of industry leading privacy preserving ad technology.
Leverage your understanding of product strategy to break down and deliver on key projects on our roadmap
Mentor others by stewarding some of your responsibilities to more junior engineers
Be a go-to resource for Mozilla’s ad stack to peers in partner teams

What you’ll bring:

4+ years of overall software engineering experience.
Proven ability to successfully lead and ship large software projects with speed and quality.
Experience in working on complex backend systems at scale
Experience in one of the following technologies: Golang, Rust, or Java.
An interest and ability to work in a distributed team (which requires good asynchronous written communication skills as well as good verbal communication skills).
Commitment to our values:
Welcoming differences
Being relationship-minded
Practicing responsible participation
Having grit

Bonus Points for:

Experience in data privacy
Experience in digital advertising or advertising platforms

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.

Please mention that you found the job at Golangprojects.com

Apply now!