Ryota Ikezawa
Senior Architect, Full Stack Engineer at freee.k.k.
Chiyoda, Japan
Summary
👤
Senior🎓
Top SchoolRyota Ikezawa is a Senior Architect and Full Stack Engineer with 11 years of experience building and leading teams around HR and financial services at freee.k.k. He blends hands-on development in Ruby, Go, TypeScript and Docker with cross-team architecture and tech lead responsibilities, driving projects from 0→1 and scaling them to production. Ryota has repeatedly led small teams to deliver complex services—employee portals, account aggregation, and lending platforms—while owning system design, migration, and operational stability. He also contributes to open-source DevOps tooling, maintaining Phusion Passenger Docker images and keeping Ruby stacks secure and up to date. Based in Chiyoda, Japan, he brings strong Japanese communication skills and pragmatic English proficiency to international collaboration. Less obvious: his background includes political science, which informs a structured, negotiative approach to stakeholder alignment and project planning.
10 years of coding experience
9 years of employment as a software developer
Bachelor of Political Science, 政治学士, 西洋政治思想, Bachelor of Political Science, 政治学士, 西洋政治思想 at Senshu Univercity
Japanese, Chinese
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (9)
bash10
docker10
dockers10
ruby10
rvm9
imp8
cicd8
testing5
spec5
Programming languages (16)
Github contributions (5)
phusion/passenger-docker
Oct 2019 - Apr 2021
Docker base images for Ruby, Python, Node.js and Meteor web apps
Role in this project:
DevOps Engineer
DevOps EngineerContributions:10 commits, 3 PRs, 17 comments in 1 year 6 months
Contributions summary:Ryota primarily focused on updating and maintaining the Docker base images for Phusion Passenger. Their commits involved bumping Ruby versions (2.3, 2.4, 2.5, and 2.6) to address security vulnerabilities and incorporate new features. They also made minor code adjustments, such as replacing `#eq` with `#end_with` in test files, to ensure the images' functionality and stability.
pythondocker-imagemeteornode-jsdocker
paveg/blog
Dec 2022 - Aug 2023
Contributions:69 PRs, 146 pushes, 68 branches in 7 months
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