Independently work across large, complex data sources, including trial balances, intercompany transaction data, and general ledger detail, to ensure completeness and accuracy in tax calculation workpapers, determine root causes of discrepancies, and execute or coordinate fixes. We work closely with Tax Planning, Tax Provision, Transfer Pricing, Tax Controversy, and external advisors to translate technical tax positions into well-documented, audit-ready filings, and we invest heavily in process improvement and automation to scale with Amazon"s growth.