Kohei Yoshida
Systems Development Engineer at Amazon
Tokyo, Japan
Summary
🤩
Rockstar🎓
Top SchoolKohei Yoshida is a Systems Development Engineer II based in Tokyo with 10 years of experience building observability, networking, and operational tooling for large-scale distributed systems at Amazon and AWS. He designed and maintained big-data logging, SLO management, and automated issue-analysis consoles for Amazon Search while providing on-call leadership during high-severity incidents. A Certified Kubernetes Administrator and long-time DNS/SRE practitioner, he is a committer/maintainer of CoreDNS—the default DNS component in Kubernetes—bringing deep protocol and operational expertise to cloud-native environments. Kohei combines hands-on engineering with customer-facing troubleshooting from his AWS support background, and he often bridges product, service teams, and embedded engineering initiatives to accelerate launches and improve reliability. An interesting detail: beyond shipping internal platforms, he has repeatedly uncovered subtle DNS behaviors at scale, reflecting a knack for finding and fixing elusive infrastructure issues.
10 years of coding experience
3 years of employment as a software developer
Master's degree, Information Science, Master's degree, Information Science at Tokyo University of Science
Japanese, English
Github Skills (18)
coredns10
plugin10
go10
service-discovery10
dns10
kubernetes9
vagrantfile9
virtualbox9
bootstrap8
slack-bot7
kubernetes-cluster7
kubeadm7
ansible7
vagrant7
docker7
Programming languages (4)
Github contributions (5)
ykhr53/bmo
Dec 2019 - Apr 2020
BMO the slack bot
Contributions:70 commits, 20 PRs, 63 pushes in 3 months
slackbotslack-bot
ykhr53/new-bmo
Aug 2021 - Jan 2023
This is the brand-new BMO!
Contributions:67 commits, 7 PRs, 61 pushes in 1 year 5 months
brandcss
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