Joe Farebrother
Software Engineer at GitHub
Greater Brighton and Hove Area United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolJoe Farebrother is a Software Engineer with 12 years' experience, currently focused on Java analysis at GitHub where he contributes to the widely used CodeQL security analysis tool. He combines a strong theoretical background from an MMath in Mathematics and Computer Science at Oxford with hands-on security engineering—writing and refining CodeQL queries, adding test cases, and improving detection of insecure patterns like improper intent verification and weak local authentication. His early work ranges from game server features in Node.js to internship contributions at Semmle, giving him a practical full-stack perspective alongside deep static-analysis expertise. Based in the Greater Brighton and Hove area, he brings a methodical, research-informed approach to building auditable, secure code analysis that supports global code-scanning initiatives.
12 years of coding experience
MMathCompSci, Mathematics and Computer Science, MMathCompSci, Mathematics and Computer Science at University of OxfordMaths, Further maths, Physics, Computing, Maths, Further maths, Physics, Computing at Hove Park 6th form
Github Skills (11)
it-security10
security-testing10
android-security10
security-scan10
codeql10
security10
java9
data-analysis9
dataflow9
analyse9
javas9
Programming languages (10)
Github contributions (5)
github/codeql
Sep 2020 - Dec 2022
CodeQL: the libraries and queries that power security researchers around the world, as well as code scanning in GitHub Advanced Security
Role in this project:
Security Engineer
Security EngineerContributions:240 reviews, 467 commits, 173 PRs in 2 years 3 months
Contributions summary:Joe contributed to the CodeQL security analysis tool, focusing on detecting and mitigating security vulnerabilities. Their work involved implementing and refining queries for identifying insecure patterns, specifically addressing potential issues like improper intent verification and insecure local authentication. The user added test cases to validate the effectiveness of these security-focused queries. They made updates, including bug fixes and code style improvements, to existing codebase to improve their functionality.
codeqlgithub-advanced-securitysecuritysemmle-qlgithub-security-lab
joefarebrother/leavebot
Apr 2016 - Apr 2016
Contributions:47 commits, 40 pushes, 1 branch in 1 day
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