Senior Cloud Infrastructure Engineer

Jun Ueno is a Senior Cloud Infrastructure Engineer with over 6 years of experience spanning backend development, AWS infrastructure, and FinOps. They have a proven track record of realizing significant AWS cost reductions (30-40%) and effectively translating executive intent into infrastructure decisions while communicating platform constraints to C-suite executives. Jun is the sole inventor of a 0-RTT VPN handshake (USPTO pending) and is currently expanding into Cloud Security architecture. Their experience includes being the sole CI/CD owner for a major Japanese megabank's web platform at Deloitte (Next.js + Sitecore on AWS ECS, GitLab CI/CD), building GCP Dataflow ETL pipelines with Java and Apache Beam for a connected-vehicle program, and developing AI-augmented infrastructure operations on Claude Code, which delivered one engineer-year of capacity in production operations. They also have experience with DDoS mitigation (3x, including SYN-flood) and root-cause analysis through WAF deployment. Jun is seeking ~60-80 hours per month for additional, async-friendly engagement as an SRE, DevOps, Platform Engineer, Security Engineer, or Technical Advisor. Their rate is negotiable based on scope and engagement length.