Wenxuan Hao

Collaborated in an Agile environment to migrate the legacy ANA system into a modern web-based architecture using Spring Boot. Optimized RESTful APIs by implementing server-side pagination and DTO pattern to reduce payload size, decreasing API latency by 50%. Implemented stateless authentication by Spring Security and JWT to enforce RBAC. Developed comprehensive test suites using JUnit and Spring Test, achieving 85% code coverage. Reviewed 500+ lines of code weekly, reducing QA bug reports by 15%.

Built a housing management system with a dynamic dashboard and data processing pipeline using Next.js and TypeScript, enabling real-time property tracking and interactive data visualization. Automated data entry workflows by creating Excel import feature and using SheetJS, reducing manual data entry time for the operations team by 90%. Deployed the application to an Aliyun ECS instance using Docker containers and configured Nginx for reverse proxying. Projects included Flash Sale System and Distributed Patient Management System with microservices using API Gateway, gRPC, and Kafka; centralized sessions in Redis to support high concurrency; Redis Lua scripts to prevent overselling; 10k+ requests buffered via RabbitMQ for peak shaving.