- Build features for enterprise product using Vue, NestJS and Golang. - Worked on new service deployment with Kubernetes. - Working on API refactoring. - Developing team guidelines to improve code quality.

- Built RESTFul APIs and gRPC endpoints under the micro-service architecture with DDD conventions. - Rebuilt the push notification system along with the migration for the device records. - Improved the efficiency of the invoice syncing process. - Rebuilt and improved the speed of the invoice lottery checking system. - Worked on collecting the metrics of API and RPC endpoints with Prometheus and created Grafana dashboards.

Worked on feature development for internal tools. Assisted with code-base refactoring. Improved the documentation of primary service and internal tools.

Built RESTFul APIs for the Goodnight App. Built internal tools to improve the management process. Created scripts to improve the development process. Write SQL queries for the operation team to check campaign performance. Managed service deployment using EC2/ECS/Elastic Beanstalk. Extended 50+ ruby slack bot commands to simplify repetitive actions for the operation team.

- Worked on feature development and trouble-shooting for the Main App Server. - Built and maintained an internal Spammer Management Platform for the crew to view/modify user status. - Created a set of rules to ban spammers and mark suspects automatically and integrated it with the primary app server.