David Chen

DoorDash is a technology company that connects people with the best in their cities by empowering local businesses and in turn, generate new ways for people to earn, work and live.

• Designed and implemented multiple-delivery assignments, including clustering, route generation and optimization
• Executed experiments to determine thresholds for batching opportunities to increase acceptance in Scala and Kotlin
• Introduced local LRU cache to reduce external service calls with a 40% hit rate and 50% response time

State Street Global Advisors (SSGA) is the investment management division of State Street Corporation and the world's fifth largest asset manager, with nearly $2.8 trillion (USD) in assets under management.

• Initiated and implemented a portfolio construction Web App hosted on local network with performance analytics
• Conducted cross-functional research and developed portfolio selection models integrating ESG with R and SQL
• Assessed 12 aspects of 4 sovereign risk data providers and presented to global senior management team

Industrial Bank (IB) is one of the first batch of joint-stock commercial banks approved by the State Council and the People's Bank of China, and with a registered capital of 19.052 billion yuan, IB is staying stably among Global Top 50 Banks.

• Developed an application (in C++) with Wind database plugin to automatically generate bank credit rating reports
• Designed a SQL database to store 500 banks Financial data from Wind, allowing modification and coupled with Excel
• Enabled analysts to adjust weights, view result, and produce reports with graphs for different periods

A.T. Kearney is an American global management consulting firm that focuses on strategic and operational CEO-agenda issues facing businesses, governments and institutions around the globe.

• Developed and optimized cost and service model (in SQL) for largest semiconductor dealer in Asia-Pacific
• Implemented graph search algorithm using Java Database Connectivity to find least cost and fastest logistic routes
• Reduced 15% stock keeping units (SKUs) and realized 30% of saving in both time and transportation