Software Engineer

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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, and Pocket, a service for keeping up with the best content online. 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. 

About The Role

The Firefox team at Mozilla is looking for recent graduates up to senior level engineers to join us in our mission to build a better Internet. Are you a curious software developer who is passionate about learning and working collaboratively with a worldwide open source community? If so, we’d love to speak with you about coming to work at Mozilla where you can use your talents and initiative to help make Firefox the best web browser on desktop and mobile devices!

In this role, you will be a core team member working to improve Firefox for the benefit of users and web developers alike. You’ll work in the open and have frequent contact with collaborators around the world. Day-to-day tasks will include writing code, tests, and specifications as well as building prototypes, solving problems, analyzing data, and most importantly learning new skills that will enable you to become an even stronger engineer. Do you want to know more?

What you'll do: 

• Improving existing Firefox features.
• Working with multi-disciplinary teams to implement entirely new features.
• Analyzing performance problems in Firefox to identify areas that need improvement.
• Synthesizing bug reports into actionable tasks.
• Ensuring Firefox aligns with relevant standards and works with real websites.
• Increasing the quality of the data we collect to enable better decisions.

What you'll bring:

If your background is not an exact match but you feel like this position may be a good fit for you, please apply. We value a diverse skill set, but we explicitly don't care about the path you've taken to get here.

• Good interpersonal and communication skills
• The desire and ability to create excellent documentation
• A good grasp of C++, JavaScript, and/or Rust
• Some knowledge of HTML and/or CSS
• Motivation to learn new tools and techniques for improving existing software
• BS in Computer Science or a related field or equivalent experience
• Interest in multi-threaded systems, performance analysis, and optimization

Things that might set you apart from other applicants:

• Familiarity with one or more of the following areas:
• parsing (e.g. compilers, DBMSes, etc.)
• multi-threaded systems
• performance analysis and optimization
• Experience with migrating a codebase to Rust
• A history of working with distributed teams
• Experience working with a large codebase

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 hiringaccommodation@mozilla.com 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.

Group: E

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ReqID: R2809