Justin Ngai
Senior Software Engineer at Meta
New York, New York, United States
Summary
👤
Senior🎓
Top SchoolJustin Ngai is a Senior Software Engineer based in NYC with six years of experience building large-scale infrastructure and security systems at Meta. With a dual CS background from UC Berkeley and Cornell (MEng), he blends strong algorithmic foundations and hands-on engineering across Dev Infra, Ads ML, and Pyre language services. He has taught and mentored extensively—serving as a TA and course instructor for advanced CS courses—which informs his pragmatic, team-first approach to solving hard problems. Comfortable across full-stack and mobile work from earlier AppDev iOS projects to backend security tooling, he quietly bridges production reliability with developer ergonomics. Notably, his career trajectory shows rapid specialization into infrastructure security while retaining breadth in systems and education.
6 years of coding experience
3 years of employment as a software developer
Bachelor of Arts - BA, Computer Science, Bachelor of Arts - BA, Computer Science at University of California, BerkeleyInternational Baccalaureate Bilingual Diploma, International Baccalaureate Bilingual Diploma at Chinese International School | 漢基國際學校Master of Engineering - MEng, Computer Science, Master of Engineering - MEng, Computer Science at Cornell University
English, Chinese, Chinese, French, Korean
Github Skills (8)
language-server10
type-checking10
type-check10
language-server-protocol10
python10
code-navigation10
vscode9
logging9
Programming languages (8)
Github contributions (5)
NgaiJustin/btor2i
Oct 2023 - Dec 2023
An interpreter for the BTOR2 format.
Contributions:13 reviews, 18 PRs, 84 pushes in 1 month
NgaiJustin/cs6120-bril
Aug 2023 - Nov 2023
Contributions:137 pushes, 1 branch in 2 months
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