• Developed the new generation of distributed relational database service which allows users to read and write 7 times faster.• Individually implemented controller, DAOs, and service layer of modifying instance failover priority, a feature which was served as the key update in public release. - Java, Spring MVC, Maven, Hibernate. PostgreSQL.• Accelerated modifying ports by 40% by utilizing factory pattern and optimizing tasks’ execution orders in workflows. – Workflows, Design patterns.• Tested and resolved several fatal bugs that advanced the progress by at least 1 week and ensured stability of application during critical launch. – Postman, pgAdmin

My job is to design and develop an integrated health system with Internet connection. Patients can measure and manage their vital signs, like ECG, respiration rate, blood pressure, weight, etc, through their smartphones. The part of this project is sponsored by National Science Foundation.