At Qiandama, I owned backend implementation and maintenance for promotional campaigns, including campaign creation and business rules. I developed prize draw and coupon issuance features for retail marketing activities.
I handled concurrent requests in promotion workflows and refactored promotion modules as business requirements evolved, focusing on maintainable backend code.
At China Chengxin Credit, I integrated bank and external data-source interfaces and implemented data services for risk, business registration, and adverse credit information. I also developed batch-processing services and supported workflow integration testing.
At Yisheng Payment, I built customer data-exchange APIs and batch-processing routines for a reserve fund monitoring platform connected to China Construction Bank. I also contributed to prepaid-card and anti-money-laundering upgrades, reserve fund subaccount services, and bank integrations.
