Build CreditPay product from scratch, including transaction, account, reconciliation, report data analysis platform Transaction part includes consumption, refund, repayment, and abnormal order processing Account part includes account opening process, withdrawals, and abnormal account processing Reconciliation part includes reconciliation with upstream wallet, third-party channel repayment error reconciliation, and accounting system reconciliation Report data includes business data synchronisation ETL technology selection, report data model development, and report data model development. Reporting data includes business data synchronisation ETL technology selection, report display tool technology selection, report data model development.

Marketing middle-platform architecture design, including coupon system, activity system, membership points system Payment middle-platform architecture design, including payment core, account system, and payment channel docking Driver service domain splitting, external output service model, so that the platform can quickly take orders from third-party platforms Dispatch platform construction, the use of design principles and the integrated use of design patterns, such as factories, templates, combinations, strategies, etc. to build and develop easy-to-maintain and easy-to iterate system engineering Leading middle-platform system Saas construction, flexible and fast for third-party ride-hailing platforms to access.

From zero to one built car-hailing customer, payment and marketing system

• Build CaoCao car-hailing System• Mainly responsible for development of vehicle service center, online car-hailing data reporting platform, and operation management background unified certification center platform.• Split vehicle service, optimize vehicle power synchronization module, and introduce asingle-machine message queue, which improves synchronization efficiency by 50%.• Online car-hailing supervision platform is connected, using message queue to decouple, cut peaks and abstract aset of models, and connection efficiency is improved by 60%• Transform operation certification center, based on redis distributed session single sign-on

• Build an SaaS online learning platform.• Improved SaaS infrastructure and developed high-quality products.

• Collaborated with team members to create applications' system analysis based on client requirements.• Applied web services and REST API design best practices to deliver stable systems.• Improved SaaS infrastructure and developed high-quality eCommerce products.

Build a medical data platform