Dominic Mazzoni
Software Engineer at Apple
San Jose, California, United States
Summary
🤩
Rockstar🎓
Top SchoolDominic Mazzoni is a seasoned software engineer and engineering leader with 19 years of experience building cross-platform systems, accessibility features, and audio processing tools. Currently on the Mac Accessibility team at Apple, he blends deep systems expertise—from C++ performance tuning on embedded devices to CSS debugging—with proven leadership managing teams of a dozen engineers. A strong generalist with focused strengths in audio DSP (original author of Audacity), web browser internals, and machine learning, he has shipped accessibility solutions at scale for Chrome and implemented tricky native API caching to preserve sandboxing. He also led backend integrations at Clockwise to bridge Google and Microsoft calendar ecosystems and contributed to major open-source graphics work such as tagged-PDF support in Skia. Based in San Jose, he pairs rigorous academic training (CMU MS, Harvey Mudd BS) with an insatiable curiosity for understanding how things work end-to-end.
19 years of coding experience
23 years of employment as a software developer
B.S., Mathematics, B.S., Mathematics at Harvey Mudd CollegeMaster of Science (M.S.), Computer Science, Master of Science (M.S.), Computer Science at Carnegie Mellon University
English
Github Skills (6)
pdf-generation10
c-language10
cprogramming-language10
data-structures8
data-structure8
algorithms7
Programming languages (11)
Github contributions (5)
google/skia
Feb 2020 - Jul 2020
Skia is a complete 2D graphic library for drawing Text, Geometries, and Images.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:13 commits in 4 months
Contributions summary:Dominic focused on adding support for tagged PDFs within the Skia library. Their contributions include implementing interfaces and functionalities to generate tagged PDFs, allowing for structure and content association within the PDF output. They also implemented the IDTree structure for tagged PDFs, ensuring the PDFs generated passed validation. Further work included adding support for attributes to PDF document structure nodes such as Alt and Lang.
drawingtext-drawingskia2dopengl
minorninth/WebKit
Oct 2023 - Feb 2025
Home of the WebKit project, the browser engine used by Safari, Mail, App Store and many other applications on macOS, iOS and Linux.
Contributions:58 pushes, 17 branches in 1 year 4 months
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