At Hewlett-Packard, I designed and implemented a webhook service that consumes messages from AWS SQS and forwards device status events to downstream services. It supports configurable callback URLs and authentication credentials, with database-based deduplication to prevent repeated notifications.
At PEXX, I developed the core withdrawal function for a stablecoin-to-fiat platform. I used atomic SQL updates to prevent balance overdrafts and implemented idempotent payment processing and consistency checks.
At Talentsec, I co-designed a traffic analytics system with the big data team for 400M+ daily requests. Separate aggregation tables for IP, region, and URL dimensions enabled dashboard statistics retrieval within one second.
At Dingdong Maicai, I redesigned goods allocation calculations as a distributed producer-consumer system, improving performance by 5–6 times. Earlier, I worked on RBAC permissions at Bilibili and Kafka-based customer request handling at KE Holdings (Beike).
