Worked on system enhancement of the ORO eService platform to implement e-Proof functionality for existing certificates, including Proof of Maintaining Savings Account and Certificate of Non-Bankruptcy (CNB).
Developed backend logic using Java, Spring Boot MVC, and Spring Boot Workflow; used PostgreSQL as the database.
Generated PDFs, emails, and reports using Apache Velocity templates.
Built front-end pages with jQuery, HTML, CSS, and Thymeleaf.
Prepared and executed load testing using Apache JMeter to evaluate system performance.
Enhanced the OMSA service by adding new e-Proof fields, creating a new public-facing page for certificate download, and implementing new batch jobs for data generation and synchronization.
Improved the CNB counter service by adding new search logic to help staff locate cases more easily and streamlining the approval/follow-up workflow for colleagues to generate certificates efficiently.

Official Receiver's Office EProof System

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