Toshimitsu Takahashi
パートナー at 株式会社キーストーン
Chiyoda, Japan
Summary
🤩
Rockstar🎓
Top SchoolToshimitsu Takahashi is a seasoned software engineer and business leader with 13 years of experience bridging product, engineering, and executive roles across Tokyo's tech and investment scene. Currently a partner at 株式会社キーストーン, he has held director and managing director positions at スマートキャピタル and board roles at multiple startups, bringing operator-level product judgment to technical initiatives. Trained with a master's in Information Science from the University of Tokyo, he pairs rigorous academic grounding with hands-on front-end work—contributing UI improvements to an open-source browser extension that streamlines AWS role switching. Known for moving between coding and corporate strategy, he combines practical engineering chops in HTML/JavaScript/CSS with deal-making and product incubation skills. Based in Chiyoda, Tokyo, he brings a rare mix of technical craft and boardroom experience useful for startups scaling product and platform efforts.
13 years of coding experience
7 years of employment as a software developer
修士（情報理工学）, 電子情報学専攻, 修士（情報理工学）, 電子情報学専攻 at 東京大学
Japanese, English
Github Skills (6)
html10
css10
google-chrome-extension10
javascript10
front-end-development10
chrome-extension10
Programming languages (6)
Github contributions (5)
tilfinltd/aws-extend-switch-roles
Aug 2016 - Nov 2022
Extend your AWS IAM switching roles by Chrome extension, Firefox add-on, or Edge add-on
Role in this project:
Front-end Developer
Front-end DeveloperContributions:43 releases, 11 reviews, 283 commits in 6 years 4 months
Contributions summary:Toshimitsu focused on developing the user interface of the browser extension. They added and modified HTML, JavaScript, and CSS code to implement features such as configuration input, saving configurations, and displaying a list of roles. The user also worked on improving the UI by adding a filter, adding image to profile list and fixing UI design.
firefoxedgechromefirefox-extensioniam
tilfin/paced-work-stream
Sep 2016 - Feb 2019
Node.js stream working at constant pace and concurrent
Contributions:7 releases, 18 PRs, 20 pushes in 2 years 5 months
stream-jsnode-jsnodejsstreamconstant
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