Ryota Arai
Software Engineer at mercari
Tokyo, Japan
Summary
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RockstarRyota Arai is a seasoned software engineer based in Tokyo with 13 years of experience specializing in backend, DevOps, and test automation for infrastructure tooling. He is an active open-source contributor to well-known projects in the configuration management ecosystem—most notably Itamae and Chef—where he implemented core features, improved error handling, and helped set up CI/CD pipelines. His contributions to serverspec and specinfra demonstrate a strong focus on reliable testing, cross-distro compatibility, and practical Docker improvements. Comfortable across the full stack of infrastructure code, Ryota combines pragmatic refactoring with feature development to make tools simpler and more robust. A detail-oriented problem solver, he often improves observability and developer experience through clearer logging, better error messages, and expanded test coverage.
13 years of coding experience
Github Skills (25)
git10
docker10
scripting10
testing10
configuration-management10
rspec10
linux10
dockers10
ruby10
chef-client10
automation10
script10
sh10
error-handling10
chef-solo10
Programming languages (9)
Github contributions (5)
itamae-kitchen/itamae
Dec 2013 - Oct 2018
Configuration management tool inspired by Chef, but simpler and lightweight. Formerly known as Lightchef.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:658 commits, 135 PRs, 297 pushes in 4 years 10 months
Contributions summary:Ryota implemented core functionalities and made code improvements for the configuration management tool "Itamae," which is inspired by Chef. Their contributions involved adding and modifying resources like files, templates, git repositories, and directories. They also added support for features such as node attributes and improved logging. Furthermore, they were involved in setting up and configuring the CI/CD pipeline.
configuration-managementansibleinfrastructurerubyinfrastructure-as-code
mizzy/specinfra
Dec 2013 - Jul 2015
Command Execution Framework for serverspec, itamae and so on
Role in this project:Backend & DevOps Engineer
Backend & DevOps EngineerContributions:17 commits, 10 PRs, 4 comments in 1 year 7 months
Contributions summary:Ryota primarily contributed to the backend functionality of the `specinfra` project, focusing on extending and refining the command execution framework. Their work included adding support for specific commands on various Linux distributions, enhancing package installation, and improving Docker integration with the addition of `commit_container` and other modifications for better functionality. They also made improvements to the backend and refactored certain sections of code by updating the configuration.
test-kitchenserverspecrubyserveritamae
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