• Work as a developer in team. Design, build and deploy the transportation services using Serverless Architecture for processing non-Prime and Prime orders at global scale. – AWS Lambda, AWS Serverless Application Repository• Design and implement package routing APIs with Java and related web frameworks for smart picking goods importing routes. Final product improves the efficiency of logistic system 15%. – Spring Boot REST• Responsible for writing unit tests and integration tests in order to pass the 90% of testing coverage quality gate. Also responsible for mentoring interns. • Troubleshoot JVM issues through resolution, in a time-sensitive production environment to do deep analysis such as API performance, memory usage and object creation.• Enhanced document lock model of customs clearance document update service to support concurrent processes to query and modify the same document consistently. – S3, DynamoDB• Built AS2 based integrated EDI solution which supports exchanging financial data between suppliers based on Event Driven Architecture. – SQS, RedShift

Built distributed web applications that top analysts and portfolio managers rely on to evaluate mutual fund performances.• Developed MVC-based web applications for fund performance measurement including its frontend JavaScript and backend Java components. – ExtJS, Spring, Struts and Hibernate• Developed performance calculation engines and unit tests using Java/Groovy to ensure system reliability for quants to build complex strategies.• Refactored accounting reporting modules for handling securities groupings, aggregation and visualization that can be individually developed to reduce the total processing time by 1/3 the time.• Created RESTful web services to deliver time-series analytics to downstream risk management systems based on standard and custom factor combinations. – RESTEasy• Wrote various Stored Procedures/Linux Bash Shell/JIL scripts to automate the process for day-to-day reconciliation.