Senior Software Engineer, Accessibility

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.

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 this team and role: At Mozilla, accessibility (or a11y for short) is an integral part of our mission to ensure the internet is "open and accessible to all," helping to empower people, regardless of their abilities, to contribute to the common good. To that end, the Accessibility Team maintains the Firefox accessibility engine used by assistive technology software, as well as other accessibility specific features such as high contrast mode support. In addition, the team seeks to guide and educate design and product teams in crafting accessible Mozilla products or features.

This supports Mozilla's ambition of creating a joyful internet for all. The Mozilla Corporation is looking for a skilled 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 across various operating systems, 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.

What You’Ll Do

: 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. Collaborate with design and front-end teams to identify, assess, and remediate accessibility issues. 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. What you'll bring: A degree or equivalent in Computer Science or a related field. Demonstrated proficiency with C++.

Knowledge of web accessibility and ARIA. 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.