Justin Lu
Software Engineer IC-2 at Oracle
San Francisco Bay Area United States
Summary
🤩
Rockstar🎓
Top SchoolJustin Lu is a software engineer with five years of experience focused on Java core libraries, currently contributing to OpenJDK development at Oracle in the San Francisco Bay Area. He specializes in backend refactoring and performance optimization—demonstrated by systematic replacements of StringBuffer with StringBuilder and cleanup of date/time formatting code in the JDK. His background includes accelerating search systems at Gilead by 300% and modernizing large Python codebases during internships, showing a strong aptitude for both legacy modernization and production performance. A UC Davis CS graduate with a 3.87 major GPA, he blends rigorous academic foundations with hands-on open-source impact on one of Java’s flagship projects.
5 years of coding experience
1 year of employment as a software developer
Bachelor's degree, Computer Science, 3.87 Major GPA, Bachelor's degree, Computer Science, 3.87 Major GPA at University of California, DavisHigh School Diploma, 4.5 Weighted GPA, High School Diploma, 4.5 Weighted GPA at Carlmont High School
English, Chinese
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (6)
javas10
openjdk10
jvm10
performance-optimization10
java10
refactoring9
Programming languages (5)
Github contributions (5)
openjdk/jdk
Jan 2023 - Jan 2023
JDK main-line development https://openjdk.org/projects/jdk
Role in this project:
Back-end Developer
Back-end DeveloperContributions:428 reviews, 11 commits, 188 PRs in 19 days
Contributions summary:Justin primarily contributed to refactoring and improving code within the Java Development Kit (JDK) codebase. They focused on replacing instances of `StringBuffer` with `StringBuilder` across multiple Java files, demonstrating a focus on performance optimization. Their work also included fixing unused variables in several Java classes related to the calendar and date/time formatting, as well as removing duplication. These changes indicate a focus on code quality and efficiency.
openjdkjavajvmjdk
justin-curtis-lu/ACC-Scheduler
Jul 2021 - Jan 2022
Scheduling Application for the Sac SSC Escort Program - ACC Senior Services
Contributions:117 commits, 4 PRs, 26 pushes in 6 months
schedulingsscseniorsacacc
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