Morgan Reschenberg is an Accessibility Platform Engineer with a decade of experience, currently advancing inclusive browsing at Mozilla from San Francisco. They specialize in low-vision features, high-contrast support, and a major overhaul of VoiceOver on macOS, plus caching the accessibility tree to improve Firefox performance. An active contributor to the Gecko codebase, Morgan’s work includes optimizing announcement handling and viewport/offscreen calculations that materially improve screen reader interaction and pinch-zoom accessibility. They combine hands-on engineering with mentorship and standards engagement via the CSS Working Group, reflecting a blend of product-facing impact and protocol-level influence. As a UC Berkeley CS alum passionate about STEM education, Morgan brings both technical depth and a sustained commitment to widening access in computing.
10 years of coding experience
BA, Computer Science, STEM Education, Junior, BA, Computer Science, STEM Education, Junior at University of California, Berkeley
General Education, General Education at Merced College
Engineering, General Education, Engineering, General Education at Buhach Colony High School
Read-only Git mirror of the Mercurial gecko repositories at https://hg.mozilla.org. How to contribute: https://firefox-source-docs.mozilla.org/contributing/contribution_quickref.html
Role in this project:
Accessibility Specialist
Contributions:387 commits in 4 years 8 months
Contributions summary:Morgan's contributions center around improving accessibility within the Mozilla Gecko rendering engine, specifically focusing on the a11y subsystem. They've modified code related to announcement notifications and their handling within the accessibility framework, optimizing how VoiceOver (VO) interacts with the browser. Several commits address viewport handling, caching, and offscreen state calculations, which are vital for accessible experiences with pinch-zooming and scrolling. The user also added performance markers to measure the time taken by several key a11y functions.
Contributions:11 commits, 11 pushes, 1 branch in 1 month
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Morgan Reschenberg - Accessibility Platform Engineer