Yusuke Kuoka
Senior Software Engineer (Indexing And Full-Text Search) at ChatWork株式会社
Tokyo, Japan
Summary
🤩
Rockstar🎓
Top SchoolYusuke Kuoka is a Senior Software Engineer with 17 years of experience specializing in indexing, full-text search, and cloud-native infrastructure for high-availability, highly scalable systems. Based in Tokyo, he combines deep distributed-systems and database expertise (currently at SurrealDB) with hands-on DevOps work across Kubernetes, Helm, and AWS tooling. He is a prolific OSS contributor and maintainer—recognized as an AWS Container Hero and GitHub Star Alumni—whose work spans projects like helm, helmfile, actions-runner-controller and eksctl, improving CI/CD, autoscaling, and Kubernetes integrations. Yusuke prefers pragmatic, containerized solutions that boost developer productivity and often balances SaaS with self-hosted OSS to maximize leverage for small teams. He’s open to part-time or highly flexible full-time roles and quietly aims to be a paid open-source maintainer, reflecting a rare mix of production-grade engineering and community stewardship.
17 years of coding experience
11 years of employment as a software developer
Master of Information Science, Natural Language Processing, Master of Information Science, Natural Language Processing at Japan Advanced Institute of Science and Technology学士, 工学部 情報工学科, 学士, 工学部 情報工学科 at 金沢工業大学
Japanese, Chinese
Github Skills (83)
env10
testing10
databases10
http10
authentication10
websocket10
charting10
automation10
chrome-canary10
websockets-client10
build-automation10
dockerfile10
backend10
k8s10
client-websocket10
Programming languages (22)
Github contributions (5)
roboll/helmfile
Feb 2018 - Dec 2022
Deploy Kubernetes Helm Charts
Role in this project:
DevOps Engineer & Automation Engineer
DevOps Engineer & Automation EngineerContributions:15 releases, 178 reviews, 500 commits in 4 years 10 months
Contributions summary:Yusuke primarily contributed to the Helmfile project by implementing and improving automation and deployment aspects. Their work included enabling support for features like release hooks (prepare, pre/postuninstall), incorporating Kubernetes API validation features and providing options for improved handling of deployments. The user also added functionality for chart dependency locking and added features for setting adhoc chart values through the command-line interface. These contributions enhanced the project's usability and efficiency in deploying and managing Kubernetes applications.
chartscharthelmhelm-charthelmfile
actions/actions-runner-controller
Feb 2020 - Jan 2023
Kubernetes controller for GitHub Actions self-hosted runners
Role in this project:Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:52 releases, 1086 reviews, 474 commits in 2 years 11 months
Contributions summary:Yusuke focused on implementing core features related to managing GitHub Actions runners using a Kubernetes controller. They added functionality to manage RunnerSets, which are similar to ReplicaSets for runners, responsible for creating and deleting runners based on a template. Furthermore, they added support for HorizontalRunnerAutoscaler and integrated this with GitHub webhook events, specifically pull request and check run events, to provide auto-scaling capabilities for the runners. Finally, they also worked on enhancing the E2E test suite.
controllerhostedrunnersoperatorself-hosted-actions
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