EXPERTISE
Azure
10 technologies
Primary cloud platform at BitFlyer — responsible for full AKS cluster lifecycle, Azure Container Apps rollout, and a zero-trust VNet security redesign. Integrated Key Vault with RBAC-enforced service identities, migrated all database connectivity to private Service Endpoints, and introduced Privileged Identity Management (PIM) to eliminate standing admin privileges. Also built Azure Functions–driven data archival pipelines saving $4,800/yr in sustained costs.
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In Practice
BitFlyer · Site Reliability Engineer
Built an Azure Functions–driven data archival pipeline to migrate ~600 GB of high-growth tables from Azure SQL Business Critical to Hyperscale tier, relieving primary database capacity pressure, preventing the 4 TiB storage ceiling breach, and delivering $4,800/yr in sustained cost savings.
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
Led .NET 8 runtime upgrades for all production Azure Functions, improving cold-start latency and execution efficiency by 25% while maintaining backward compatibility across dependent services.
BitFlyer · Site Reliability Engineer
Architected backend infrastructure for a full customer-facing platform redesign, designing Azure App Services topology with RBAC-enforced Key Vault and Storage Account access via Service Endpoints to enforce zero-trust service-to-service authentication across all APIs.