Takahiro Okumura
Site Reliability Engineer at Cookpad Japan
Chiyoda, Japan
Summary
🤩
Rockstar🎓
Top SchoolTakahiro Okumura is a Site Reliability Engineer with 13 years of experience building and operating resilient web infrastructure from Tokyo's Chiyoda ward. He currently helps keep Cookpad’s services reliable, drawing on a background in web operations and senior engineering roles at GMO Pepabo where he focused on deployment, configuration and performance tuning. A longtime open-source contributor, he has extended projects like ngx_mruby, serverspec and specinfra—adding SSL handshake hooks for nginx, bringing FreeBSD support to testing tooling, and expanding package/service management—demonstrating deep cross-platform systems expertise. He also authors monitoring plugins in Go and contributes pragmatic Puppet changes, showing fluency across DevOps tooling, testing, and low-level server behavior. Trained in computer science and simulation engineering at Nagoya Institute of Technology, he combines academic rigor with hands-on improvements to real-world infrastructure.
13 years of coding experience
6 years of employment as a software developer
創成シミュレーション工学専攻, 創成シミュレーション工学専攻 at 名古屋工業大学大学院情報工学, Computer Science, 情報工学, Computer Science at 名古屋工業大学
Japanese
Github Skills (36)
puppeteer10
ssl10
tls1210
puppet10
scripting10
freebsd10
package-development10
plugin-development10
testing10
configuration-management10
apache10
tls1310
ruby10
script10
go10
Programming languages (17)
Github contributions (5)
matsumotory/ngx_mruby
Jul 2016 - Mar 2018
ngx_mruby - A Fast and Memory-Efficient Web Server Extension Mechanism Using Scripting Language mruby for nginx
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:45 commits, 26 PRs, 5 pushes in 1 year 8 months
Contributions summary:Takahiro contributed to the `ngx_mruby` project by implementing and modifying features related to SSL handshake handling within the Nginx module. They added functionality for custom SSL handshake handlers using mruby scripts. Their work also involved modifying the build process and test scripts, specifically by removing git submodules and updating test configurations. The user also made improvements to the test suite, introducing tests for SSL certificate changes.
nginxmechanismmemoryscriptingweb-server
mackerelio/mackerel-agent-plugins
Dec 2015 - Jun 2018
Plugins for mackerel-agent
Role in this project:Back-end Developer
Back-end DeveloperContributions:6 commits, 6 PRs, 1 comment in 2 years 5 months
Contributions summary:Takahiro primarily contributed to the development of plugins for the mackerel-agent. Their work included implementing a new plugin for netfilter conntrack metrics and fixing errors in existing plugins. They also modified code related to testing and linting, along with addressing typos in comments. The user demonstrates proficiency in Go and the creation of monitoring plugins.
golangagentmackerel-agentmackerelmetrics
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