Keisuke Umegaki
Site Reliablity Engineer at Shopify
Tokyo, Japan
Summary
🤩
Rockstar🎓
Top SchoolKeisuke Umegaki is a Site Reliability Engineer based in Tokyo with 7 years of hands-on experience building and operating cloud-native systems. He has strong expertise in Kubernetes, GCP, Terraform, and observability, and moved from backend and API development into customer-facing reliability work at Datadog and now Shopify. At Datadog he contributed to core Agent and integration repos—adding MySQL and Envoy metrics, improving log streaming, error handling, and graceful shutdowns—bringing production-focused code fixes to a large open-source monitoring project. He pairs live customer troubleshooting and mentoring with pragmatic automation and GitOps practices developed while designing SCIM APIs and clusters from scratch at HRBrain. Known for turning issue investigations into code fixes, he prioritizes measurable reliability improvements and clear operational docs. Fluent in both engineering and support domains, he uniquely bridges deep instrumentation knowledge with practical runbook-driven operations.
7 years of coding experience
6 years of employment as a software developer
Bachelor's degree, Bachelor's degree at Aoyama Gakuin University
English, Japanese
Github Skills (22)
python10
mysql10
testing10
integrations10
go10
datadog10
error-handling10
logging10
envoyproxy9
observability9
monitoring9
env9
http9
convoy9
kubernetes-pods8
Programming languages (12)
Github contributions (5)
DataDog/datadog-agent
Aug 2021 - Jan 2023
Main repository for Datadog Agent
Role in this project:
Back-end Developer
Back-end DeveloperContributions:89 reviews, 46 commits, 116 PRs in 1 year 5 months
Contributions summary:Keisuke primarily contributed to the backend of the Datadog agent, focusing on improving error handling, logging, and overall robustness of the system. They modified code related to HTTP transaction processing, including response body truncation and error message clarity. Further contributions involved adding features to the log streaming functionality, modifying test suites and improving code quality and reliability. The user also worked on graceful shutdowns of agent components.
golangdatadog-agentagentobservabilitypmm
DataDog/integrations-core
Dec 2021 - Oct 2022
Core integrations of the Datadog Agent
Role in this project:Backend Developer & QA Engineer
Backend Developer & QA EngineerContributions:19 reviews, 15 commits, 34 PRs in 10 months
Contributions summary:Keisuke contributed to the core integrations of the Datadog Agent by implementing and testing new metrics. They added functionality to monitor MySQL performance by introducing new metrics such as prepared statement counts. Additionally, the user updated the Windows service integration and enhanced the Envoy integration to support outlier detection metrics. These changes involved modifications to code and tests, as well as adjustments to configuration files.
datadog-agentagentintegrationsmonitoringdatadog
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.