Tomoyuki Koyama
Software Engineer, Database Reliability
Tokyo, Japan
Summary
👤
Senior🎓
Top SchoolTomoyuki Koyama is a Database Reliability Engineer at Mercari with 11 years of experience focused on SRE, IT infrastructure, and distributed systems. He brings hands-on experience managing company-wide database fleets and improving reliability, informed by prior roles supporting containers, CI/CD, and IaC at AWS. His background spans academia—pursuing doctoral work in computer and media sciences—and practical ops: internships and part-time roles in SRE, security, and CI at major Japanese tech firms. Comfortable bridging research and production, he has supported diverse domains from CDN and security to embedded CI for hardware projects. Colleagues value his blend of methodical engineering and teaching experience from his university TA role, which helps him communicate complex reliability work across teams. He’s Tokyo-based and reachable at tomoyuki(at)koyama.me.
11 years of coding experience
4 years of employment as a software developer
Doctoral Programs, Graduate School of Bionics, Computer and Media Sciences, Doctoral Programs, Graduate School of Bionics, Computer and Media Sciences at Tokyo University of Technology
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (98)
controller10
nodes10
eagle10
esxi10
nginx10
nagios9
authentication9
haproxy9
creative-commons9
ssl9
ingress-controller9
vmware9
docker9
nss9
oauth9
Programming languages (12)
Github contributions (5)
cdsl-research/doktor-v2
Aug 2021 - Jan 2023
テクニカルレポート公開サイト https://cdsl-research.github.io/doktor-v2/
Contributions:1 release, 14 reviews, 793 commits in 1 year 5 months
creative-commonseagle
lc-tut/404room
Jun 2017 - Mar 2018
Contributions:31 commits, 6 PRs, 10 pushes in 9 months
typescriptiot
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.