Ryoma Kai
DevOps Engineer at LINEヤフー株式会社
Kashiwa, Japan
Summary
👤
Senior🎓
Top SchoolRyoma Kai is a DevOps engineer and tech lead with 13 years of experience building and operating company-wide CI/CD, PaaS, and artifact management platforms at Yahoo and LINEヤフー. He progressed from frontend and platform engineering to product owner and engineering manager roles, giving him a rare combination of hands-on implementation skills and product-level ownership across the platform lifecycle. Currently responsible for a cross-company artifact management platform, he focuses on scalable, reliable delivery pipelines and developer experience. An active open-source contributor, he maintains driver casks in the Homebrew ecosystem, reflecting practical hardware and tooling fluency beyond cloud-native software. Based in Kashiwa, Japan, he limits networking to past collaborators and is not pursuing new engagements, underscoring a selective, team-focused approach. His background in intelligent information systems underpins a methodical, data-informed approach to platform engineering and automation.
13 years of coding experience
10 years of employment as a software developer
学士（理工学）, 知能情報システム学科, 学士（理工学）, 知能情報システム学科 at 佐賀大学
Github Skills (4)
macos10
homebrew-cask10
version-control9
ruby7
Programming languages (10)
Github contributions (5)
Homebrew/homebrew-cask-drivers
Sep 2017 - Apr 2022
💀 Casks of Drivers (deprecated)
Role in this project:
Developer
DeveloperContributions:8 commits, 8 PRs in 4 years 7 months
Contributions summary:Ryoma primarily contributes to the `homebrew-cask-drivers` repository by adding and updating driver casks. Their work involves adding new driver packages, updating existing ones with new versions, and modifying configurations. The contributions include integrating drivers for various hardware devices such as smart card readers and tablets. They also collaborate with other developers on updates.
casksdriverscaskhomebrew
legnoh/oura-exporter
Nov 2023 - Feb 2025
Prometheus(OpenMetrics) exporter for Oura Ring
Contributions:1 review, 1 PR, 17 pushes in 1 year 3 months
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