- nextbeat Co., Ltd. Site Reliability Engineer (Permanent, 26.09 ~ )
- LIFULL Co., Ltd. Product Engineer (Permanent, 25.04 ~ 26.08)
- Site Reliability Engineering
- Kubernetes
- AWS (AWS Certified DevOps Engineer - Professional, AWS Certified Solutions Architect - Associate)
- Observability
| Project | Contributions |
|---|---|
| OpenTelemetry Collector Contrib | • Made the shared Kafka client reuse cached AWS credentials for MSK IAM authentication instead of reloading them for every token, refreshing them shortly before expiry (#51686) |
| cmux | • Isolated fake-socket CLI tests from the launching cmux shell's environment with a shared test helper (#16562) • Made the localization checker accept reordered numbered printf placeholders while still rejecting dropped or retyped arguments (#16376) • Added a static check that compares Swift defaultValue format arguments with each catalog's English value, wired into local verification and CI (#16396) |
| Prometheus Alertmanager | • Added regression coverage for Discord and Webex notification failure classification on HTTP 4xx and 5xx responses (#5324) |
| Thanos | • Improved query-frontend range-query caching by reusing compatible lower-step cache entries with step-aware subsampling (#8876) |
Languages: Go, TypeScript, PHP, Python
Platform & Orchestration: Kubernetes, Istio, Docker, Argo CD
Infrastructure as Code: Terraform
Observability: Prometheus, Grafana, Loki, Tempo, OpenTelemetry, Telegraf, InfluxDB
Chaos Engineering: Chaos Toolkit, AWS Fault Injection Service (AWS FIS)
Cloud & CI/CD: AWS, GitHub Actions
Data Stores & Messaging: MySQL, PostgreSQL, MongoDB, Redis, Kafka