During a two-month period, Dien Huynh Phuc enhanced authentication, deployment stability, and automated testing across the ncc-erp-ams and ncc-erp-workflow-w2-ui repositories. He developed a secure user authentication API using PHP and integrated Mezon-based login flows in the UI, improving onboarding and access control. Dien stabilized CI/CD pipelines by refining GitHub Actions workflows, reducing build failures and streamlining deployments. He also established an automated API testing framework with Python and Swagger, expanding QA coverage and ensuring reliable releases. His work addressed both backend and frontend concerns, demonstrating depth in API development, state management with React, and automation framework design.