Own the technical development, security, maintenance, and system analysis of core HRMS modules, including payroll, time, leave, and claims management. Develop software functions, unit tests, and user-story code using architectural standards and test-driven development. Participate in Scrum ceremonies, review test cases, troubleshoot defects through root cause analysis, and deliver sustainable system improvements. Apply expertise in regional payroll regulations and HRMS best practices across multiple Asian markets.