Kenichi Kamiya
Software Engineer at Quipper Limited
Japan
Summary
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RockstarKenichi Kamiya is a seasoned software engineer based in Japan with 14 years of experience spanning backend, frontend and DevOps. He has strong roots in the Ruby ecosystem—contributing to core projects like ruby/ruby, rubinius, JRuby, ruby/spec and Opal—where his work focused on correctness, edge cases and test coverage. At Quipper he ships full-stack features with Ruby on Rails, React/Redux and TypeScript while drawing on earlier datacenter and network engineering experience at NTT East to improve reliability and automation. Kenichi blends pragmatic systems thinking with attention to language-level detail, from fixing core VM behavior to polishing UI discoverability (e.g., emoji-cheat-sheet). He routinely improves test suites and tooling, making him as comfortable refactoring low-level language behavior as iterating on user-facing interfaces.
14 years of coding experience
8 years of employment as a software developer
Japanese, English
Stackoverflow
371reputation
7kreached
7answers
0questions
Github Skills (86)
atom-editor10
programming-language10
testing10
authentication10
c1110
interpreter10
opal10
ruby10
c1710
javas10
excel10
refactoring10
javascript10
type-check10
spreadsheet10
Programming languages (34)
Github contributions (5)
rubinius/rubinius
Aug 2012 - Nov 2017
The Rubinius Language Platform
Role in this project:
Back-end Developer
Back-end DeveloperContributions:472 commits, 28 PRs, 8 pushes in 5 years 3 months
Contributions summary:Kenichi primarily contributed to the Rubinius Language Platform, specifically focusing on correcting and improving core features. They addressed issues related to the behavior of regular expressions, including the handling of symbols, and also corrected errors within Module and Main visibility setters. In addition, the user added various specifications and tests to ensure the correct functionality and stability of the system across various core aspects such as range operations, and standard methods. The user's contributions demonstrate a strong emphasis on ensuring code correctness and adherence to language specifications.
rubiniusprogramming-languagesvirtual-machine
ruby/spec
Aug 2012 - Mar 2021
The Ruby Spec Suite aka ruby/spec
Role in this project:QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:341 commits, 39 PRs, 15 pushes in 8 years 8 months
Contributions summary:Kenichi contributed extensively to the `ruby/spec` repository by adding and modifying specifications (specs) for various Ruby language features and methods. Their contributions include creating new specs for core Ruby classes and modules, focusing on areas like regular expressions, modules, main, kernel, range, and arrays. The user also refined existing specs, fixing typos and adjusting code style to improve the overall quality and maintainability of the test suite.
rubylanguage-specsmspecrubyspec
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