Manage Vertex API Calls, Web Services, and Tax Data Feeds SQL & Data Analysis Write queries to extract tax-related data from tables such as ZX_LINES, ZX_RATES, ZX_REPORTING_CODES, AP_INVOICES, AR_TRANSACTIONS, and IC_TRANSACTIONS Debug tax discrepancies in AP, AR, and Intercompany invoices. Analyze tax data for audit purposes, variance checks, and reconciliation Identify and resolve slow tax calculation jobs, tax rule processing issues, and invoice tax posting Ensure Vertex tax engine performance is optimized for high-volume transaction processing Tax Reporting & Period Close.