Analyzed and translated business and regulatory requirements into executable system logic for state tax systems. Produced functional documentation defining business rules, workflows, validations, calculation models, and change requests to support software development and testing. Designed functional validation strategies and tax calculation models for complex regulatory scenarios, including multi-actor tax structures and cross-system validations. Led cross-functional collaboration with business stakeholders, development teams, consulting firms, and external vendors to clarify regulatory requirements, resolve business ambiguities, and support implementation and release processes. Executed end-to-end functional testing, UAT, regression testing and risk-based testing, production issue analysis, process analysis, workflow optimization, and process improvement to ensure operational continuity and regulatory compliance across high-impact government platforms. Designed and implemented functional solutions for high-impact regulatory changes affecting statewide tax collection, protecting operational continuity and revenue integrity. Defined functional tax models for complex multi-actor structures involving withholding mechanisms and cross-entity validations. Identified functional inconsistencies and regulatory risks during system implementations, improving solution accuracy before production release. Designed and validated functional calculation models for complex state tax structures involving multiple taxpayers, withholding mechanisms, cross-entity validations, and consolidated payment workflows. Supported implementation and functional validation of online payment workflows integrating tax systems, banking institutions, reconciliation processes, and operational continuity controls.

Analyzed business and regulatory requirements for vehicle tax systems and translated them into business rules, validations, workflows, and system behavior. Defined tax calculation logic and validation rules for vehicle-related taxes and contributions, ensuring regulatory compliance and calculation accuracy. Supported implementation of regulatory changes, operational workflows, taxpayer registration, document issuance, and functional testing processes. Led functional integration and validation of VIN verification workflows within the state vehicle tax system, improving operational controls and taxpayer data validation processes. Supported large-scale operational implementations related to vehicle control and plate replacement programs.

Analyzed inventory data, operational inconsistencies, shrinkage, and reporting discrepancies across interconnected warehouse systems. Identified large-scale inventory discrepancies caused by incorrect system records, contributing to nationwide corrections.