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Senior C++ Engineer, Accessibility



The Mozilla Corporation is looking for a skilled C++ developer to work with our passionate Accessibility Team to make the web fully accessible! This is a small, hard-working team that affects the lives of users every day. Using your C++ and systems programming expertise, you will contribute to the core Gecko web rendering engine, shaping Mozilla’s efforts to take Firefox accessibility to the next level.

Opportunities to collaborate with other browser teams abound, and working in the open is the norm. You’ll be responsible for writing code, tests, specifications, building prototypes, solving problems, and analyzing data. You'll get feedback from real users and synthesize it into bug reports, feature designs, and strategic direction to make the web platform even better over time.

As a Senior C++ Engineer, Accessibility here at Mozilla, you will…

Improve the architecture, stability, correctness and performance of the core Gecko accessibility engine.
Debug and fix problems in our multi-process, multi-threaded codebase.
Debug OS specific issues.
Build excellent working relationships with engineers and organizational leaders on other teams.
Influence web standards that provide or improve access to new web technology.
Work in the open as part of the Mozilla open source project and engage with Mozilla’s global community.
Work on infrastructure to expose the web platform to accessibility technology.
Meet standards for gecko's memory usage and performance.
Implement new web features to enable new kinds of applications and content types.
Your Profile

We value a variety of voices on the Accessibility Team and at Mozilla. You don't need to check every box on this list to apply:

Demonstrated proficiency with C++.
Knowledge of Javascript, the web, and web applications.
Experience working on cross-platform native applications.
Creative problem-solving and debugging skills.
Experience writing and debugging multi-process, multi-threaded code.
Ability to learn a large and complex multi-language code base.
Excellent written and verbal English communication skills.
Ability to effectively participate as part of a geographically-distributed open development team.
A passion to empower and improve the web for people with a diverse range of abilities.
Bonus points if you have any of the following:

Familiarity with native development for at least one OS: Windows, Mac, Linux, Android.
Understanding of accessibility and inclusive design.
Experience developing accessible technologies.
Knowledge of web accessibility and ARIA.
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 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.

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Why Mozilla?
At Mozilla, we’re serving humanity—by maintaining a safe, open internet—while also helping the individual humans employed here to reach their personal and professional goals. With a relatively small team serving hundreds of millions of people, a culture of exploration, and a commitment to mentorship, opportunities abound to learn and grow at Mozilla.

Our values drive our actions
Purpose is built into our work, with our mission driving every decision
We challenge assumptions, the status quo, ourselves, and each other
We are transparent: in our code, our business partnerships, and our everyday interactions
We seek out people from diverse backgrounds and with perspectives different from our own
We pair purpose with performance and put people ahead of profit
Our impact is global
700+ paid staff from over 30 countries
Thousands of volunteer contributors across six continents
9 global offices: Mountain View, San Francisco, Portland, Vancouver, Toronto, Paris, London, Berlin, and Beijing
Hundreds of home offices globally
Our benefits are world-class
Flexible work environment (nearly half of Mozillians work remotely)
Industry-leading paid parental leave (up to 26 weeks of fully paid leave for childbearing parents and up to 12 weeks for non-childbearing parents)
Reimbursement for professional development (up to $3,000/year)
A work setup including the latest hardware and software of your choice

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