Keita Suzuki
CTO at amptalk Corporation
Bunkyō, Japan
Summary
👤
Senior🎓
Top SchoolKeita Suzuki is a CTO and co-founder with eight years of engineering experience building products from scratch and scaling them through early funding rounds. After earning a master's from the University of Tokyo, he led system development at SoftBank, where he practiced Scrum and LeanXP while driving cloud technology choices and internal agile training. In 2020 he co-founded amptalk and led development of an online negotiation recording and analysis product, shipping its public release in 2021 and helping secure ¥400M in funding by 2023. He combines hands-on implementation and team-building—covering architecture, dev processes, and hiring—with a founder’s focus on measurable product outcomes. Outside the company he contributes to web-platform-tests, improving Service Worker and WebSocket test coverage and ensuring standards-compliant behavior across browsers. Based in Bunkyō, Tokyo, he brings a mix of research-level education, product-driven engineering, and practical QA/test automation experience that helps bridge product, platform, and reliability.
8 years of coding experience
修士, 情報理工学, 修士, 情報理工学 at 東京大学
Github Skills (15)
service-worker10
chromium10
build-system10
websocket10
test-automation10
testing10
javascript9
web-development9
test-runner9
web-development-project9
html8
python8
android8
git7
browser7
Programming languages (8)
Github contributions (5)
web-platform-tests/wpt
Feb 2020 - Feb 2020
Test suites for Web platform specs — including WHATWG, W3C, and others
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:4 commits, 2 PRs, 9 comments in 9 days
Contributions summary:Keita primarily focused on adding and updating web platform tests (WPTs) for various aspects of the WebSockets and Service Worker Static Routing API features within the `wpt` repository. Their contributions included updating existing test handlers, refactoring for Python 3 compatibility, and adding new tests to cover resource timing behavior and edge cases. These changes aimed to ensure the correct implementation and behavior of web standards related to service workers and WebSocket functionalities across different browsers.
microsoft-edgetest-runnerspecssafarifirefox
quasi-mod/dotfiles
Mar 2018 - Mar 2024
My personal dotfiles.
Contributions:6 PRs, 89 pushes, 4 branches in 6 years
vimkarabinerpersonal-dotfilesdotfileszsh
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.