Hao Yuan Email and Phone Number

• Sketch and built a multi-channel stock trading message bridge application empowered by Java, object-orientated programming, spring framework, and PCF cloud. The application serves 30 million customers.• Established multiple REST APIs to operate an internal messaging platform exploiting Java, spring-boot, PCF Cloud, and OOP principles. The new platform replaced 100% of the functionalities of the legacy system.• Led and initiated an asynchronous, highly scalable message application to accomplish email/SMS/push notification validation, enrichment, and delivery service to overcome stock trade spikes of 30 million requests.• Rehabilitated a stock trading confirmation email processing component leveraging distributed system concept in an enterprise Linux environment with a 500% performance increase.• Expand applications with service registry to perform health monitoring, regional failover, and self-recovery. All the newly developed applications retain 99.9% disaster recovery reliability.• Instituted customized CI/CD pipelines to deploy applications to the PCF cloud with metadata enabling auto-scaling, security groups, and performance monitoring. Reduced over 50% of work and minimized maintenance costs.• Advised and aligned comprehensive enterprise standard logs with data security features to mask 100% non-public user data while providing all necessary logs for diagnoses.• Forged J-meter script to perform stress test and performance test, reflecting production with 99.9% correctness.• Endeavored detailed code reviews and documented best practices in the team workspace. Brought down defects occurrence and ensured the code base is well-documented.• Mentored and empower fresh or junior team members by hosting architectural design discussions and knowledge transfer sessions. Sustained the team efficiently while growing and helping team members thrive.

Teaching Assistant for CS5520 Mobile Application Development

• Crafted an interactive proof-of-concept Online library website exploiting REST service installed with spring framework, and NodeJS.• Produced a reactive and static web UI with React and integrate with AWS cloud using S3.• Drafted and deployed MySQL DB and MongoDB in AWS EC2 for user and application data storage.• Created scalable and maintainable AWS cloud environment with load balancer, subnet structures, and auto-scaling.• Assembled CI/CD pipelines using Jenkins and automated the deployment process.

The class title is Algorithm. My job includes helping students understand class material, answer questions regards to homework during my office hour.