google/libphonenumber
Dec 2024 – Mar 2026
2 Months active
Languages Used
C++JavaJavaScript
Technical Skills
Build System ConfigurationBuild ToolsDocumentationJava Module SystemPhone Number ValidationAndroid Development
Tijana Vislavski Gradina
PROFILE
Tijana Vislavski Gradina
Worked on the google/libphonenumber repository, focusing on both performance optimization and module system stability. Delivered a feature that improved Android memory usage by reducing the frequency of NumberFormat selection in PhoneNumberUtil, which enhanced formatting speed and battery life without altering API behavior. Addressed Java module packaging by adding and later adjusting Automatic-Module-Name entries to resolve split-package conflicts, ensuring smoother integration for downstream applications. Fixed logic for regional phone number validation, clarifying documentation and updating module naming. The work demonstrated expertise in Java, Android development, and build system configuration, with careful attention to compatibility, maintainability, and developer experience.
Overall Statistics
Feature vs Bugs
33%Features
Repository Contributions
4Total
Bugs
2
Commits
4
Features
1
Lines of code
351
Activity Months2
Your Network
5023 peopleSame Organization
@google.com5015
Benedict OdaiMember
Craig IngramMember
KayyuriMember
Scott SuarezMember
Agent2Agent (A2A) BotMember
Andreas AbelMember
Aadi KapurMember
Aadish GoelMember
Aahil MehtaMember
Work History
March 2026
1 Commits • 1 Features
Mar 1, 2026March 2026 monthly summary for google/libphonenumber: Delivered PhoneNumberUtil Performance Optimization by reducing the frequency of NumberFormat selection, improving Android memory usage and decreasing Matcher instantiations without changing functionality. The change centers on calling chooseFormattingPatternForNumber only once in formatInOriginalFormat, per commit 548cebebaec6493d9af337827f084bea74f58254 and aligned with issue #3976. This results in lower memory pressure and faster formatting under typical workloads, with API compatibility preserved. The work enhances app responsiveness and battery life in high-volume formatting scenarios and sets a solid foundation for additional performance gains.
1 Commits • 1 Features
Mar 1, 2026March 2026 monthly summary for google/libphonenumber: Delivered PhoneNumberUtil Performance Optimization by reducing the frequency of NumberFormat selection, improving Android memory usage and decreasing Matcher instantiations without changing functionality. The change centers on calling chooseFormattingPatternForNumber only once in formatInOriginalFormat, per commit 548cebebaec6493d9af337827f084bea74f58254 and aligned with issue #3976. This results in lower memory pressure and faster formatting under typical workloads, with API compatibility preserved. The work enhances app responsiveness and battery life in high-volume formatting scenarios and sets a solid foundation for additional performance gains.
March 2026
December 2024
3 Commits
Dec 1, 2024Month: 2024-12 — Focused on stabilizing Java modularity and clarifying regional behavior in libphonenumber to reduce integration risk and improve developer experience for downstream apps.
December 2024
3 Commits
Dec 1, 2024Month: 2024-12 — Focused on stabilizing Java modularity and clarifying regional behavior in libphonenumber to reduce integration risk and improve developer experience for downstream apps.
Activity
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Quality Metrics
Correctness90.0%
Maintainability90.0%
Architecture85.0%
Performance80.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++JavaJavaScript
Technical Skills
Android DevelopmentBuild System ConfigurationBuild ToolsDocumentationJavaJava Module SystemPhone Number ValidationSoftware Optimization
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