田中佑樹
CTO at 株式会社kubell
Chiyoda, Japan
Summary
👤
Senior🎓
Top School田中佑樹 is a seasoned technology leader and CTO with 14+ years of experience building product-led organizations and scalable web services, currently leading kubell after a long tenure at Chatwork. He began as a full-stack engineer (Java, PHP, Scala, TypeScript/React) and steadily moved through EM and cross-functional product leadership to run the entire Product Division as an executive. He combines hands-on cloud and data experience (AWS, TreasureData, BI tooling) with deep operational rigor in security—having founded a Product Security team, run Bug Bounty, and institutionalized vulnerability scanning and encryption guidelines. A builder of org-level capabilities, he launched a DevHR practice to align engineering and people processes, improving hiring, onboarding, and inner communication. He mentors through active 1:1 coaching and still does consulting and development side projects, demonstrating both technical curiosity and talent development at scale. His background in mathematics (Sophia University) underpins a data-driven approach to product and organizational decisions.
14 years of coding experience
学士, 理工学部数学科, 学士, 理工学部数学科 at 上智大学
Japanese, Chinese
Github Skills (7)
electron5
api4
nodejs3
riotjs2
firefox2
chrome2
middleware1
Programming languages (8)
Github contributions (5)
tan-yuki/dotfiles
Jan 2015 - Jun 2026
Contributions:41 pushes in 11 years 6 months
tolymer/mahjong-rules
Jan 2016 - Jun 2018
麻雀のルールをまとめたもの
Contributions:1 release, 13 commits, 5 PRs in 2 years 5 months
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