Tien Vu Email & Phone Number

Vietnam

Ho Chi Minh City, Vietnam

Build and implement for BachHoaXanh POS Ecosystem - Top 1 food and consumer goods retail chain in Vietnam.Developed and maintained key functionalities of the sales system: - Tech Stack: Java, Swing GUI, Spring MVC, Spring Boot, Spring Security, Apache Kafka, Spring CloudConfig, Apache Seata, Hazelcast, PostgreSQL, Git, GitLab CI/CD, Docker, DevSecOps, JUnit, AssertJ.- Design and implement the POSClient including: GUI, The Sale Module, Promotion ManagementModule, Pricing Engine, Inventory Management, and Payment Integration.- Develop the backend API endpoints for POS mobile application using Spring MVC, Spring Boot.Integrated user authentication and authorization using JWT. Load balancer using HAProxy. APIRate limiting using Bucket4j.- Using Kafka for data streaming, listen to record change events.- Optimize processing speed using Hazelcast for caching, Aerospike for real-time database.