Kazuhiko Yamashita
バックエンドエンジニア at GO株式会社
Fukuoka, Japan
Summary
🤩
Rockstar🎓
Top SchoolKazuhiko Yamashita is a seasoned backend engineer based in Fukuoka with 11 years of experience building and operating core platform technologies for web services. He combines deep systems knowledge—troubleshooting Linux kernel issues and ISP-grade infrastructure—with hands-on application development in Go and Ruby. As a former senior principal platform engineer and tech lead at GMO Pepabo, he shaped company-wide platform reliability and automation, and now drives backend development for a ride-hailing app at GO株式会社. An active open-source contributor, he improved ngx_mruby’s ACME/auto-SSL features, adding async patterns and hardening stability—work that reflects his focus on automation and production safety. Colleagues rely on him for pragmatic refactors, robust exception handling, and a knack for bridging low-level system insight with developer-friendly platform tooling.
11 years of coding experience
学士, 学士 at 産業能率大学
Github Skills (5)
nginx10
mruby10
async9
asynchronous9
openssl8
Programming languages (16)
Github contributions (5)
matsumotory/ngx_mruby
May 2017 - Nov 2019
ngx_mruby - A Fast and Memory-Efficient Web Server Extension Mechanism Using Scripting Language mruby for nginx
Role in this project:
Back-end Developer
Back-end DeveloperContributions:94 commits, 27 PRs, 118 pushes in 2 years 6 months
Contributions summary:Kazuhiko focused on implementing and refining features related to an ACME client, specifically for automated certificate deployment. Their contributions included adding client patterns, integrating asynchronous operations, and ensuring the system's stability through bug fixes like stack smashing detection. Further work involved refining the internal workings of the auto-SSL system, including refactoring and improved exception handling.
mrubynginxscripting-languagewebserverngx-mruby
pepabo/mruby-msd
May 2017 - Apr 2021
multi stage datastore by mruby
Contributions:16 commits, 11 PRs, 10 pushes in 3 years 11 months
mrubymultistage
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