• Drove IT system enhancements and validation for Debt Management Services (Collections) web and mobile applications, executing structured testing to support 70M+ customers and 60K+ internal users.
• Executed end-to-end testing for settlement revamp initiatives, validating REST APIs, UI changes, automated workflows, data integrity and cross-system dependencies with strong regulatory and audit compliance.
• Owned test planning and execution across functional, integration, regression and UAT cycles; monitored production KPIs, conducted defect triage and root-cause analysis and coordinated fixes to improve system stability.