Tech Lead for Payment Risk Actions Team

Buy with Prime - Core Ordering Team

●Worked as a backend engineer focusing more on platform/infra features and scalability side in Core Ordering Team in Buy with Prime

●Building the platform to manage the APIs, events and storage for the full life cycle of all buy-with-prime orders, including orders creation, cart management, payment, fulfillment, return and refund.

●Externalize APIs to 3rd party customers, enabling them to manage the order lifecycle with simple GraphQL queries

●Scaled the order management platform using various AWS components(DynamoDB, EventBridge, Lambda, CloudWatch, IAM...) with multiple strategy(event-driven, auto-scaling optimization, caching, dynamic fields loading for large/complex data model...)

Pages Team-LinkedIn Marketing Solution

●Worked as a full-stack engineer focusing more on backend/infra side in Pages Platform Team in LinkedIn Marketing Solution department

●Focused on improving the performance and solve scalability issues in a 200k qps complicated large distributed system

●Designed and implemented various online/nearline/offline services and features for Pages Team of 75 Engineers

●Being a member of the company-wide API Champion Group to identify and release new APIs and features to 3rd party developers

Pages Team-LinkedIn Marketing Solution

●Designed and implemented mid-tier of Sponsored Update functionality for company admin which converts a news feed from a company to a sponsored ads-like feed and broadcast it. Company admin can select certain active campaigns that want to put the sponsor update into directly from their admin feed comparing with going to campaign manager as before.

●Designed and implemented front-end(javaScript, Ember.js) and back-end of pixel tracker url functionality for life and jobs page for company. This feature provide company admins the freedom to designate a one pixel image which helps to monitor the page impression though the third party analytics provider they choose.

Control Design Automation-Simulink Core Group

●Build block features and infrastructures, numerical algorithms, numerical design foundation and its automatic code generation capabilities for the needs of a vast user base.

●Designed and programmed a new infrastructure for Block Parameter Validation in Simulink 2014b, which moves the parameter validation work to Simulink Engine and the block author only need to register the keyword for valid parameter descriptor

●Designed and programmed new "reset" and "start" behaviors in sample-based mode for 4 Simulink blocks(SineWave, Pulse Genereator, Random Number and Uniform Random Number) in Simulink 2015a. The new sample-based mode algorithm will make the 4 blocks free of absolute simulation time in contrast to time-based mode.