Developed numerous marketing activities, including the TikTok referral and Spring Festival activities to bring more than 20,000 new registered users and more than 5,000 first transactions (e.g. first loan).

Implemented the services by Go with framework Ginex and Hertz for HTTP and Kitex for RPC Thrift protocol.

Applied the knowledge of MySQL and Redis for data management and frequency limit.

Collaborated with a team of 5 people to develop the workflow engine, which consumes the upstream events from RocketMQ/Kafka to run a state machine. It integrated all the basic marketing components like SMS, coupon, TikTok notice, and blacklist into one place, reducing workload by 60% for every new activity.

Facilitated the production management of an Inclusion Factory by building a mini-ERP system in Python utilizing the PuLP package and automated 90% of the employee shift scheduling and production tracking effort.

Developed the humanlike chatting agent WALL.E. in Python with the Flask framework, collaborated the functions of information acquisition, error diagnosis, solution management to be used in Slack by staff.