Kōhei Yamamoto
Product Engineer at SmartHR, Inc.
Tokyo, Japan
Summary
👤
Senior🎓
Top SchoolKōhei Yamamoto is a Product Engineer based in Tokyo with 12 years of experience building and improving e-commerce and reservation platforms. He has led major re-architectures—most notably centralizing authentication and introducing OpenID Connect and MFA for a large shop platform—while also improving developer experience through CI/CD, static analysis, and in-house package infrastructure. Comfortable across backend APIs, security, and operational improvements, he has shipped subscription and payment systems and driven schema-driven API practices in production. A committed knowledge-sharer, he co-authored a book on Ruby, ran a corporate tech blog, and speaks and writes about developer productivity and API design. He blends hands-on implementation with product sensibility, often focusing on developer tooling and platform-level solutions that reduce long-term operational cost.
12 years of coding experience
11 years of employment as a software developer
Master of Engineering - MEng, Computer Science, Master of Engineering - MEng, Computer Science at Kobe University
Japanese, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (26)
android-app9
kotlin8
inline8
playing7
android7
flutter-plugin7
iframe6
flutter6
youtube6
ios6
video-player5
player5
flutter-web5
api5
parcelable5
Programming languages (5)
Github contributions (5)
gyamoto/AndroidExamples
Mar 2017 - Apr 2023
いろいろ試してみたいこと
Contributions:51 PRs, 108 pushes, 53 branches in 6 years 2 months
kotilnandroid
gyamoto/QuickRabbit
Dec 2015 - Mar 2018
Contributions:1 release, 22 pushes, 4 branches in 2 years 3 months
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