Trading - derivatives

• Deployed, maintained and improved the availability of an on-premise Kafka cluster on Kubernetes

• Deployed and maintained a Flink cluster on Kubernetes with high-availability; provided Flink deployment as a k8s library

• Architected and co-led the development of a highly scalable, highly available, and fault tolerant real-time webhook system, which involves building a Flink Application, a Golang Kafka consumer service, and a Golang gRPC service from scratch

• Reviewed the RESTful design of external-facing merchant APIs

• Managed the core product catalog flow for 2 million merchants to manage 1.5 billion product listings

• Designed and implemented a full set of GraphQL APIs for merchants to create and update their products

• Led the shipping setting re-design in multiple iterations, including migrating variation-level shipping to country-level shipping, introducing first-mile shipping concept, taking over merchant’s international shipping; worked closely with PMs, designers and stakeholders and drove the back-end and front-end implementation

• Built monitoring reports and Grafana Dashboards; performed data analysis on user experiments

• Saw the team grow 4x and onboarded new team members

• Published RotoSwype: Word-gesture Typing using a Ring in CHI Conference 2019