Junio C Hamano
Mountain View, California, United States
Summary
🤩
Rockstar
Top expert inComprehensive Systems and Network Programming
Junio Hamano is a seasoned software engineer and long-time maintainer of Git who has been a major contributor to the project since 2005 and serves as MTS at Google since 2010. He specializes in Git core internals and reliability—working on reflogs, reftable/indexing, and platform-specific patches for Windows—while also engaging in DevOps and refactoring to improve code quality. Beyond code, he has shaped the project's public face and governance by updating the git-scm.com site and clarifying trademark and community policies, showing a rare blend of technical and stewardship work. With 25 years in the industry and BS/MS degrees from the University of Tokyo, he is based in Mountain View and is intentionally selective about professional contacts, preferring direct email for communication.
25 years of coding experience
Github Skills (29)
git10
content-management-system10
contentmanagement10
documentations10
contentmanagementsystem10
internals10
c1110
refactorings10
refactor10
c1710
content-management10
version-control10
refactoring10
documentation10
test-automation10
Programming languages (12)
Github contributions (5)
git/git
Apr 2005 - Jan 2023
Git Source Code Mirror - This is a publish-only repository but pull requests can be turned into patches to the mailing list via GitGitGadget (https://gitgitgadget.github.io/). Please follow Documentation/SubmittingPatches procedure for any of your improvements.
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:13 reviews, 26787 commits, 46 PRs in 18 years
Contributions summary:Junio primarily contributed to refactoring and improving the codebase's quality by addressing -Wsign-compare warnings and updating code for efficiency. Their work involved adding code to test the functionalities of the code and ensuring consistent code across the project. The user also worked on code paths dealing with various aspects of the code.
hacklanggit-clientmercurialfollowlibgit2
msysgit/git
Jun 2006 - Sep 2013
msysGit-based Git for Windows 1.x is now superseded by Git for Windows 2.x
Role in this project:Back-end Developer
Back-end DeveloperContributions:2576 commits in 7 years 3 months
Contributions summary:Junio contributed to the "git" repository, making changes related to the "builtin/apply.c" file. These changes included the implementation of whitespace options, modifications to handle file header names, and enhancements for applying binary patches. The user also updated the code to handle errors related to timestamp and file name retrieval. The commits demonstrate a focus on maintaining and extending the core functionality of the "git apply" command.
git-for-windowswindows2-x
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.