• Founding engineer of Doordash New Verticals team, built highly scalable services for Convenience and Grocery orders at Doordash.

• Lead the integration of very first set of convenience and grocery merchants to Doordash platform, helped Doordash dominated the US convenience delivery market under 8 months.

• Designed and developed Doordash retail fulfillment engine, extended the Doordash picking models with Dasher pick and Shopper pick, added fulfillment flow to Doordash order life cycles, serving millions of Dashers and Shoppers to shop and stage the groceries in-store.

• Lead variations of Merchant customized solutions, such as:

• Merchant POS integration, Merchant tax calculation and order cart adjustments

• UPC barcode processor

• Weighted item fulfillment

• Out of stock item substitutions

• Providing technical leadership, hands on designing and implementing across projects, oversaw architecture, availability and performance on highly scaled web service and applications.

• Collaborating with cross-functional dev teams, coordinated with QA and SRE teams, defined and implemented some of the core backend platform frameworks and systems that powers the next generation of iCloud services.

• Developed and managed highly scalable API and web applications that handle 300+ million transactions per day.

• Designed and developed distributed performance testing system, troubleshoot and resolve performance bottlenecks.