Kosei IDE
Custom Software Engineering Specialist at Accenture Japan
Tokyo, Japan
Summary
👤
Senior🎓
Top SchoolKosei IDE is a cloud-focused software engineer with 8 years of experience, specializing in AWS, Kubernetes, Terraform, Golang and Ruby to operate and scale global products from Tokyo. He has driven cost-saving migrations and platform upgrades—cutting infrastructure cost by ~30% and leading multiple EKS upgrades—while building GitOps practices with ArgoCD and automating on-call rotations across time zones. Comfortable in both SRE and SDE roles, he has shipped user-facing RoR systems and scalable background job architectures for high-traffic services and million-member platforms. Now at Accenture Japan, he combines hands-on infrastructure work with mentoring and process improvements developed during his time leading OSS ChatOps maintenance and developer training. Outside work his GitHub bio hints at a blend of curiosity and creativity—tea, cooking and sailing emojis that mirror an engineer who values craft, collaboration and practical elegance in systems.
8 years of coding experience
6 years of employment as a software developer
Bachelor of Science - BS, Biotechnology, Bachelor of Science - BS, Biotechnology at University of the RyukyusStudy Abroad Exchange, Korea, Biology, Study Abroad Exchange, Korea, Biology at Jeju National University, Republic of Korea
Github Skills (40)
multithreading10
haml10
ruby10
sinatra10
rack10
server10
dsl9
coercion9
code-review9
lint9
cli9
editing9
gitlab9
bitbucket8
code-completion8
Programming languages (11)
Github contributions (5)
kos31de/blog
Sep 2019 - Sep 2022
https://kos31de.github.io/blog/
Contributions:19 PRs, 53 pushes, 11 branches in 3 years 1 month
kos31de/ci-static-analysis-training-2020
Jun 2020 - Sep 2022
CIと静的解析ツール研修2020のためのリポジトリ
Contributions:4 PRs, 34 pushes, 3 branches in 2 years 4 months
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