Junong Youpin Technology Co., Ltd. provides an e-commerce platform app for Chinese farmers and merchants. The platform cooperates with a number of companies to help local agricultural product sellers realize digital transformation. I participated in the design and deployment of a large-scale agricultural product e-commerce platform clled Junon Mall. My responsibilities include database structure design based on requirement of the project; front-end platform construction; designed the microservices includes shopping cart, order management, and system module optimization and subsequent system maintenance; leading the testing and optimization of the system under the high concurrency.