Job description: ・Develop and assist in launching a new Payment Gateway product collaborated with teams in different countries. ・Integrate Blockchain for token trading. ・Tech stack: Java 8, Spring Boot2, Hibernate 5, Struts 2, Mysql, Postgresql, MongoDB, Tomcat, Jenkins, Blockchain, Kafka, Redis

Job description: ・New EC Backend Core System architecture design and development. (refer to my website for more detail) ・Backend System Development for E-commerce Websites. ・Backend System Development for Marketing Campaigns. ・Backend System Development for Brand Websites. ・Backend System Development for Supplier Portals. ・Server Management and System Optimization. ・Online Issue Resolution. ・Integration of Third-party APIs (Notion, Facebook). ・Programming Instruction. ・Tech stack: Java 17, Play Framework 1, Spring Framework 6, Spring Boot 3, Spring Data, Spring Security, Mysql, MongoDB, Tomcat, Jenkins, Reactive Kafka, Websocket, STOMP, SSE, Spring Webflux, Hibernate second level cache with Redis cluster, Hibernate Envers.

Job description: ・Developed the Morgan Direct administration dashboard. ・Created reports to enhance data analysis and reporting capabilities.. ・Tech stack: Java, Spring Framework, Spring Boot, Oracle, Jenkins.

Job description: ・Backend APIs Development for MyRewards App in Java Successfully developed major services, including the E-Invoice service and push notification service.. Tech stack: Spring Framework, Spring Boot, Spring Cloud, Hibernate, Oracle, Redis, Maven, Git, Azure. ・Internal system(CMS) development for MyRewards App in Python. Developed an array of features including app content management, marketing event promotion, customer service issue tracking, database routine maintenance jobs, marketing reporting, and a scheduling system. Tech stack: Flask, Celery, Jinja2, Bootstrap, Gunicorn, Sqlalchemy, Git, Oracle, Redis, Azure. ・Requirement Analysis, System Design, Code Review, Online troubleshooting. Internal System(CMS) Special Contributions: ・Enhanced team workflow, significantly improving efficiency and allowing more focus on product development. ・Implemented data processing automation, reducing human errors and data inconsistencies. ・Designed a distributed system architecture, providing flexibility in runtime resource allocation.

Job description: ・Spearheaded development, maintenance, and testing activities on the uDesign e-commerce platform.. ・Contributed to web page development for exhibition events. ・Established seamless data exchange with the AWS warehousing system via APIs. ・Produced comprehensive documentation, formulated development specifications, and facilitated the onboarding process for new colleagues. ・Tech stack: Java, Struts 2.x, Spring framework 2.x, iBatis, Jboss, HTML, CSS, JS, Oracle, SVN.

Job description: ・Lead the development, maintenance, and testing of APIs for warehouse systems, including distribution, inbound, outbound, replenishment, and return modules.. ・Establish seamless data exchange with domestic and international logistics providers through APIs. ・Develop and maintain a supplier administration platform, ensuring its efficiency and functionality.. ・Tech stack: PHP 5.4, Codeigniter, Oracle, Mysql, Git. Contributions: ・Pioneered the development of an automated test program to comprehensively evaluate the warehouse API flow, effectively testing a wide array of scenarios.

Job description: ・Spearheaded the development, maintenance, and testing of the Evergreen Logistics and Trade System Platform, ensuring its continuous enhancement and stability. ・Collaborated with cross-functional teams to facilitate the development of integrated systems. ・Managed static website maintenance, ensuring its availability and optimal performance. ・Produced comprehensive system documentation to support effective communication and operations. ・Tech stack: Java, Servlet/JSP, Struts 1.x, Hibernate, Spring 2.x, Oracle, Tomcat, JBoss, iReport. Contributions: ・Developed a tool using Regular Expressions to expedite the resolution of IE8 security issues, streamlining a laborious process. ・Conducted compatibility research for system upgrades, including JFreeChart and POI, ensuring seamless transitions and enhancements.