- Lead a team to do product maintenance in agile/scrum development process. - Analyze requirements and do technical design to make system flexible, maintainable and reliable. - Leverage JVM profiler to find the performance bottleneck and improve them with cache. - Leverage VisualVM to check thread dump and fix deadlock issue. - Leverage JMeter to troubleshoot concurrent issues. Design a training program with Spring Boot for newcomer.

- Implement features and do maintenance for wealth management product. - Improve DAO unit tests by replacing mock way with in-memory database. - Fix memory leak issue for cucumber integration tests. - Leverage Docker to build up dockerized CI environment.

Responsible for Enterprise Information Portal (EIP) Project - Lead a team of 3 members to develop web applications using Spring MVC, Hibernate framework. - Optimize login performance with monitoring tool Dynatrace and reduced latency by 70%. - Integrate with EIP clustering and load balancing with apache server to distribute workloads and fulfill high availability. - Leverage SOAPUI and Spring RestTemplate to integrate with SOAP and RESTful web services of external systems.

Responsible for teamKube product. - Use component oriented, server-side framework Apache Wicket to develop frontend features. - Integrate calendar booking features with outlook, Gmail using ical4j. - Interact with LDAP such as password modification and certificate importation with Spring LDAP. - Implement authentication adaptor to support Certificate Authority of MOI authentication. - Experience in CAS for Single Sign-on such as LDAP authentication, Integrated Windows authentication.