Weijun Wang
Software Engineer
San Francisco Bay Area United States
Summary
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Top SchoolWeijun Wang is a seasoned software engineer with 18 years of experience focused on security-sensitive backend development, now based in the San Francisco Bay Area. He has deep expertise in Java platform internals, contributing to the high-profile OpenJDK project by improving Kerberos authentication, session key handling, and tools like keytool and jarsigner to harden certificate and JAR signing workflows. Trained in electrical and electronics engineering (Beijing University of Post and Telecommunications; UC Irvine), he combines rigorous systems thinking with practical cryptography and security fixes that reduce real-world vulnerability surface. Known for quietly improving core libraries rather than flashy front-end work, he brings a steady, detail-oriented approach to shipping secure, maintainable platform code.
18 years of coding experience
Bachelor's degree, Electrical, Electronics and Communications Engineering, Bachelor's degree, Electrical, Electronics and Communications Engineering at Beijing University of Post and TelecommunicationsMaster's degree, Electrical and Electronics Engineering, Master's degree, Electrical and Electronics Engineering at University of California, Irvine
Github Skills (7)
javas10
kerberos10
cryptography10
java10
security10
pkcs9
gssapi9
Programming languages (11)
Github contributions (5)
openjdk/jdk
Aug 2021 - Aug 2021
JDK main-line development https://openjdk.org/projects/jdk
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1141 reviews, 1 commit, 148 PRs in 1 day
Contributions summary:Weijun primarily worked on improving the handling of Kerberos authentication and key management within the JDK codebase. Their commits focused on addressing vulnerabilities in the Kerberos ticket renewal process and ensuring proper handling of session keys and message integrity within the Java GSS API. The user also made changes to enhance the keytool and jarsigner utilities, adding features like the ability to generate certificates and ensuring correct behavior when signing or verifying JAR files.
openjdkjavajvmjdk
wangweij/skara
Aug 2020 - Jun 2026
https://openjdk.java.net/projects/skara/
Contributions:5 pushes, 3 branches in 5 years 10 months
openjdkjavajava-netopenjdk-java
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