- Developed and maintained various bank systems, including the Card Loan Offer System, Loyalty System, and Deed Record System, utilizing Java, Spring Boot, APIs, AWS, Hibernate, IBM WAS and DB2- Led a development team in customizing an in-house backend application to generate credit card loan offers for 1.6M customers, resulting in a 20% increase in approved loan applications, driving HK$5M in additional revenue annually- Conducted requirement and feasibility studies, collaborating with department heads to design and implement computer programs tailored to their specific needs, resulting in a 30% increase in team efficiency and HK$500k annual cost savings through automation- Provided functional specifications, programming design, and coding- Documented processes and technical requirements for management and team review- Provided production support

Developed web-based systems for government departments, such as the Licensing system for the Hong Kong Marine Department, utilizing MVC, Java, Spring, Hibernate, and RDBMS (Oracle)

Developed a web-based Human Capital Management solution, providing up-to-date information on employee records, training enrollment, and recruitment activities.