Engineering Director · Tokyo, Japan
YOSHIORI
SHOJI
Software engineer with 20+ years of experience. Building and leading global engineering teams. Recognized voice in Japan's developer community — speaker, author, organizer.
01
Experience
Jul 2024 – Present
CloudBees Inc.
Engineering Director
- Leading global engineering teams across Japan, US, Canada, India, and Australia
- Architecting and building AI-powered test optimization platform while leading global teams
- InfoWorld AI Impact Awards winner — achieved 80% reduction in test execution time
May 2020 – Aug 2024
Launchable Inc.
Principal Software Engineer
- Built AI/ML-driven test intelligence platform from 0→1 at Silicon Valley startup
- Core architect of predictive test selection engine (now "CloudBees Smart Tests" after acquisition)
- Daily collaboration with global teams across 5+ countries in English
Nov 2012 – May 2020
Cookpad Japan
Head of CTO Office
- Drove cross-cutting initiatives for all engineers — hackathons, workplace reforms, and development culture
Head of Tech Department / Engineering General Manager
- Managed the shared platform engineering division serving all product teams
Head of HR
- Led all HR functions including recruiting, performance reviews, and compensation
- Established hiring standards: "never lower team average"
Head of Recipe Posting
- Managed the recipe posting service development team as department head
Software Engineer
- Recipe posting platform development and led microservices migration
- Built company-wide video streaming infrastructure
Mar 2009 – Oct 2012
DWANGO Co., Ltd.
Engineer / System Leader
- Built internal mobile revenue and expense aggregation system
- Developed Niconico Seiga (e-book platform)
Feb 2008 – Mar 2009
Growth Xpartners Inc.
Software Engineer
- Performance tuning for municipal regional services
- Developed in-store visualization service
Feb 2006 – Feb 2008
BrainPad Inc.
Software Engineer
- Developed recommendation engine product "Rtoaster"
Dec 2003 – Jan 2006
KBMJ, Inc.
Web Engineer
- Built blog/RSS Japanese keyword tagging application
- Developed job-hunting support site using Google Maps API and Ajax
- Web application development for job listing platforms
Aug 2001 – Dec 2003
Zentech Technology Japan, Inc.
Software Engineer
- DoCoMo mobile phone emulator development
- Built disaster prevention information system prototype for Hokkaido government
QA Engineer
- DoCoMo mobile phone quality assurance
- Java VM quality assurance
02
Skills
JavaRubyPythonSpring BootRuby on RailsAWSDockerKubernetesBazelCI/CD
03
Talks
なぜThrottleではなくDebounceだったのか？ 700並列リクエストと戦うサーバーサイド実装のすべて
Nov 2025
クライアントサイドでよく使われる Debounce処理 をサーバサイドで3回実装した話
Oct 2024
ソートできるUUID v7をJavaで使うときの話
Jun 2024
Go Down Rockin'
Feb 2024
テストデータを貯めて感じたこと
Aug 2023
エンジニアリング x US 海外とのコラボレーション
Feb 2021
未完成な技術と歩む道のりでの 試行錯誤
Sep 2020
DevOps, Immutable Infrastructure, Microservices and Chaos Engineering
Mar 2019
Change the recipe's world
Jul 2018
Cookpad awakens
Jan 2017
Failure teaches Success
Dec 2016
How we cook cookpad.com 2016
Aug 2016
adultoruby
Oct 2015
go in to microservices(wip)
Sep 2015
cookpad 2015 summer internship rails
Aug 2015
cookpad 2015 summer internship TDD
Aug 2015
Happy video transcoding with ElasticTranscoder
Oct 2014
18 till i die
Sep 2014
04
Publications
2024 WEB+DB PRESS 総集編 [Vol.1〜136] Gijutsu-Hyoron Co., Ltd. · Essay 2017 エラスティックリーダーシップ ―自己組織化チームの育て方 O'Reilly Japan · Essay 2012 100人のプロが選んだソフトウェア開発の名著 君のために選んだ1冊 Shoeisha · Essay 2009 WEB+DB PRESS Vol.52 特集「新人さんに贈る Javaプログラミングの習慣」 Gijutsu-Hyoron Co., Ltd. · Feature Article 2008 Java Expert #03 PythonをJavaで使う〜Jython開発 基礎の基礎 Gijutsu-Hyoron Co., Ltd. · Essay 2007 Java Expert #02 お勧めコミュニティjava-ja Gijutsu-Hyoron Co., Ltd. · Essay
05
Recognition
2025 InfoWorld AI Impact Awards — CloudBees Smart Tests
2014 Developers Summit Best Speaker Award — 1st Place
2010 Developers Summit Best Speaker Award — 2nd Place
— java-ja organizer · manager-readme (376★) · 26+ conference talks