At Block's Afterpay, I led the 0→1 build of a multi-placement ad-serving service deployed across the US, AU, UK, NZ, and Canada. I designed its decision pipeline for campaign retrieval, targeting, risk filtering, auction ranking, and slot selection, targeting sub-100ms latency and 99.9% API availability.
I also built an Affiliate Control Plane integrating 18 affiliate networks and owned production integrations for the Rewards platform migration. My work spans shared API and batch runtimes, Kafka event processing, merchant matching, rate limiting, promotion eligibility, redemption tracking, and referral services.
Previously at Meituan, I built a rule-based auto-pricing service that improved purchasing pricing efficiency by 42.6% and optimized pricing-approval interfaces by 30%. I work across Java, Kotlin, Spring Boot, distributed systems, AWS, and production platform ownership, most recently leading MCP-based marketing automation that generated campaign assets 95% faster than the manual baseline.
