Take responsibility of the system's performance testing and optimization, designing and implementing infrastructure-level system components. 1. Develop distributed performance testing tools based on JMeter for PAMS. 2. Application profiling and performance optimization. Resolved several performance issues such as Memory-Leak, long latency etc. 3. Centralized AOP-style authentication & authorization framework for PAMS. 4. Take responsibility of designing the architecture and implementing the S2S and G2S protocol stack. Design for supporting multiversion protocol with no change and scalability and high availability. 5. Java Software Engineer recruiting.

Take responsibility of some of the infrastructure-level component of the Azalea project, including: 1. Design and implement the DAO layer using generics, reducing more than 50% of the code. 2. Design and implement an AOP-style (non-injecting) transaction processing layer using annotations. 3. Design and implement a MVC web framework, including features such as automatic parameters' encapsulation, automatic parameters' validation, automatic action dispatching, etc.Mentor interns of the team.