Kenji Otsuka
Software Engineer at Freelance
Tokyo, Japan
Summary
👤
Senior🎓
Top SchoolKenji Otsuka is a pragmatic full‑stack software engineer with 14 years of experience building web, mobile, ML and blockchain applications and leading engineering teams across Japan and abroad. He blends hands‑on development (Kotlin, Solidity, Python, Ruby, PHP, C/C++) with infrastructure and cloud expertise (AWS/Azure/GCP) and has practical experience shipping production ML systems and voice/text automation. As a former CTO who established international offices and a board member on blockchain copyright projects, he pairs product leadership with low‑level engineering skills—from smart contracts on Ethereum to database and middleware tuning. He is an active open‑source contributor (notably improving FuelPHP’s core DB utilities) and brings an uncommon mix of R&D curiosity and operational discipline grounded in a mathematics background and applied data science training.
14 years of coding experience
13 years of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at University of the PeopleMaster of Applied Data Science, Data Science, Master of Applied Data Science, Data Science at University of MichiganBachelor of Science, Mathematics (Algebra), Bachelor of Science, Mathematics (Algebra) at Kyoto University
English
Stackoverflow
103reputation
34kreached
0answers
3questions
Github Skills (14)
php10
f10
fuelphp10
database-design10
fuel10
sql8
autoload7
kotlin6
ios6
selenium-webdriver6
google-chrome6
selenium6
spring6
spring-boot6
Programming languages (14)
Github contributions (5)
fuel/core
Jun 2014 - Oct 2015
Fuel PHP Framework - The core of the Fuel v1 framework
Role in this project:
Back-end Developer
Back-end DeveloperContributions:11 commits, 3 PRs, 4 comments in 1 year 4 months
Contributions summary:Kenji primarily contributed to the Fuel PHP Framework's core database utilities and related functionalities. Their work included enabling SQLite3 support, modifying comments for clarity, and removing key names from primary keys. They also made minor adjustments to the database connection and autoloader classes. These changes suggest a focus on improving the framework's database abstraction layer and code maintainability.
phpframeworkfuelphpfuel-v1
KenjiOhtsuka/TeXBBS
Feb 2017 - Jan 2024
Contributions:3 pushes, 1 branch, 1 issue in 6 years 11 months
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