Kyohei Hamaguchi / @tnzk
My LinkedIn profile for English speakers
Current works
- Hyde (Privacy Tech & Blockchain) Co-Founder and VP Engineering since Dec. 2021
- 5th Floor, Inc. (which operates a developer-friendly video chat API called Kommu) Founder since Feb. 2015
- UPDATED, Inc. (Oprationg and auditing a coding bootcamp in Japan) Director and CTO since Nov. 2019
- Other: MAGIA, Inc. (since 2014), ZUMEN, Inc. (since Jul. 2019)
Past works
- Finplanet, Inc. Jun. to Sept. 2018
- Synclogue, Inc.(currently SYG, Inc.) (SaaS for app virtualization) Cofounder and CTO 2012-2014
Other
- Registered Information Security Specialist
- Japan CTOs Association peronal member
- FUKIDASS member
- Mastodon Official Gold sponsor
- GitHub / @tnzk
- Zenn / @tnzk
- dev.to / @tnzk
- Qiita / @tnzk
- Mastodon server "ichiji.social" admin (tnzk@ichiji.social)
- University of Tsukuba (2009-2013)
- Toba National College of Maritime Technology (2006-2008)
- Dad of a 6yo
- An enthusiastic practitioner of arts of katana sword
Talk
Articles
- 2021-12-25 "Svelte の Web Components サポートを使ってビデオ通話ライブラリのSDKを開発した話"
- 2021-08-09 Jest-gauge, a Jest extension to write acceptance tests in natural languages like Gauge
- 2021-07-11 Svelte for Web Components development - Pitfalls and workarounds
- 2021-06-10 Install Puppeteer on MacBook Pro with Apple Silicon / M1
- 2021-05-04 TDD, BDD, ATDD and Agile timeline
- 2020-05-31 Trying openapi2aspida to auto-generate Type Definition for a Web API
- 2020-05-14 Making Web APIs Type-safe with Aspida