Ohkubo Kohei
Service & Sales Director at HeartRails Inc.
Chiyoda, Japan
Summary
👤
Senior🎓
Top SchoolOhkubo Kohei is a Service & Sales Director and seasoned application developer with 14 years of experience melding software engineering, database administration, and project leadership to deliver business-focused applications. A University of Tokyo computer science master's graduate, he combines hands-on backend work—demonstrated by contributions improving authentication and error handling in the Rails Sorcery library—with product strategy and client-facing sales at HeartRails. Previously a CTO running magic-focused events and a developer building sandboxing tools via WIN32API hooks, he brings an unusual mix of technical rigor and live-event production skills. Known as a "Magician Geek," he cares deeply about user-interface design and code maintainability, turning complex requirements into polished user experiences.
14 years of coding experience
15 years of employment as a software developer
Master, Computer Science, Master, Computer Science at 東京大学 / The University of Tokyo
Japanese, English
Stackoverflow
9,893reputation
2.4mreached
57answers
1question
ruby
top-5%
ruby-on-rails
top-5%
git
top-5%
version-control
top-1%
Github Skills (18)
ruby-rails10
user-authentication10
authentication10
rails10
ruby10
version-control10
refactoring10
git9
ruby-on-rails9
async-await6
activerecord6
factory-bot6
feature-branch6
paperclip6
ecmascript6
Programming languages (16)
Github contributions (5)
NoamB/sorcery
Oct 2012 - Nov 2012
Magical authentication for Rails 3 & 4
Role in this project:
Back-end Developer
Back-end DeveloperContributions:5 commits in 12 days
Contributions summary:Ohkubo primarily focused on refactoring and improving code within the Sorcery authentication library for Rails. Their contributions involved correcting error handling related to database queries. Additionally, the user updated and refined code related to external authentication providers. These changes included variable name adjustments and consistent access methods for provider configurations, suggesting a focus on code maintainability and improving the authentication flow.
railsauthenticationrubyspree
kuboon/pullre-quest
Sep 2020 - Jan 2025
プルリ・クエスト
Contributions:19 PRs, 25 pushes, 23 branches in 4 years 5 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.