Andrew Williams
Software Engineer at Google
Washington, District of Columbia, United States
Summary
👤
SeniorAndrew Williams is a software engineer with eight years of experience, currently at Google in Washington, D.C., who focuses on low-level systems, reverse engineering, and networking-related development. He contributes to high-profile open-source projects including Chromium and web-platform-tests, improving browser behavior, robustness to DNS/network errors, and test coverage for tricky web API edge cases. His work on ClamAV demonstrates practical security expertise—adding SHA256 signature support and fixing Authenticode verification—which complements his browser and networking chops. Curious by nature, he combines methodical reverse-engineering skills with an engineer’s persistence, whether debugging blob URL handling or hardening signature verification. Outside of code he stays grounded through running, hiking, and ice hockey, which he credits for sustaining long debugging sessions.
8 years of coding experience
Stackoverflow
449reputation
258kreached
6answers
2questions
Github Skills (32)
javascript10
c-language10
testing10
chromium10
c1110
digital-signature10
file-format10
security10
c1710
network-protocol10
pe-file10
hashing-algorithm10
webtest10
cookie10
cprogramming-language10
Programming languages (15)
Github contributions (5)
Cisco-Talos/clamav
Aug 2018 - Jun 2021
ClamAV - Documentation is here: https://docs.clamav.net
Role in this project:
Back-end Developer
Back-end DeveloperContributions:156 commits, 2 PRs, 1 comment in 2 years 10 months
Contributions summary:Andrew primarily contributed to the ClamAV codebase, focusing on improving the handling of digital signatures, particularly for PE files. Their work involved adding support for SHA256 signatures, addressing certificate verification failures related to nested signatures, and correcting issues with Authenticode hash computations. The commits also included improvements to code formatting and the implementation of RFC3161 timestamp verification.
clamavgplv2antivirus
chromium/chromium
Nov 2021 - Jan 2023
The official GitHub mirror of the Chromium source
Role in this project:Software Engineer
Software EngineerContributions:54 commits in 1 year 2 months
Contributions summary:Andrew's contributions primarily involve modifications to the Chromium codebase, focusing on areas like IP protection and blob URL handling. They implemented retries for DNS errors in IP protection logic, ensuring more robust handling of network-related issues. Additionally, they made adjustments to browser tests related to blob URLs and updated HTTP cache settings to include a "is-cross-site-main-frame-navigation" boolean. The user also deprecated an unused proxy resolution result.
chromiumbrowser
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