EXPERTISE
Observability
7 technologies
End-to-end observability across distributed systems — deployed OpenTelemetry SDK instrumentation for distributed traces, metrics, and structured logs routing to Datadog. Integrated Sentry for error tracking and PagerDuty for on-call alerting. At BitFlyer, this unified observability stack cut incident detection time by 50% and drove sustained MTTR improvements. Azure Monitor and CloudWatch used for cloud-native alerting and auto-scaling triggers.
Technologies
In Practice
BitFlyer · Site Reliability Engineer
Deployed a unified observability stack—Datadog dashboards, Sentry error tracking, and Azure Monitor alerts—cutting incident detection time by 50% and driving sustained MTTR improvements in production.
BitFlyer · Site Reliability Engineer
Designed and implemented OpenTelemetry-based observability for the redesigned customer platform: instrumented distributed traces, metrics, and structured logs using the OTel SDK, routing all telemetry to Datadog to establish a vendor-agnostic, industry-standard observability foundation.
BitFlyer · Site Reliability Engineer
Migrated three production AKS clusters from community ingress-nginx to F5 NGINX Ingress Controller OSS (v2.5.1) with zero downtime across all services; implemented idempotent pipeline guards for the IngressClass immutability constraint, rewrote rate limiting from ingress annotations to NGINX http-snippets with geo+map IP-bypass patterns, resolved WebSocket keepalive regressions, and reconfigured Datadog OpenMetrics scraping for the new metrics endpoint.
Accenture Japan · SRE & Cloud Engineer
Deployed centralized logging and CloudWatch alarms with automated autoscaling, maintaining high availability during traffic spikes and delivering real-time anomaly alerts to on-call teams.