Senior Manager, U.S. Tax Compliance

Senior Manager, U.S. Tax Compliance The Senior Manager, U.S. Tax Compliance is responsible for leading Trinzic's U.S. direct and indirect tax compliance function, ensuring timely, accurate, and efficient compliance with federal, state, and local tax requirements. Reporting to the Director, Global Tax Reporting & U.S. Tax Compliance, this role oversees the preparation, review, and filing of U.S. income tax returns, estimated tax payments, extensions, and related tax filings, while providing leadership over indirect tax compliance activities, including sales and use tax, gross receipts tax, and other transaction-based tax obligations. The Senior Manager partners closely with Accounting, FP&A, Treasury, Legal, Internal Audit, external advisors, and members of the broader tax organization to ensure timely and accurate tax compliance, support business initiatives and transactions, maintain a strong controls environment, and drive continuous improvement across the Company's tax compliance function. Trinzic is being established as an independent public company through the planned separation of KBR's Mission Technology Solutions business, which is expected to be completed on January 4, 2027. This role offers a unique opportunity to join the organization during a pivotal period of growth and transformation, helping build and strengthen the tax compliance, governance, and reporting processes that will support Trinzic's long-term success while enabling critical government and commercial missions around the world. Key Responsibilities U.S. Direct Tax Compliance: Lead all U.S. federal, state, and local income tax compliance activities, including ownership of the Company’s consolidated U.S. corporate income tax return process, estimated tax payments, extensions, elections, foreign information reporting, and related filings. Partner closely with the Manager, U.S. International Tax & Transfer Pricing to ensure timely and accurate reporting of U.S. international tax calculations, foreign information returns, and related compliance obligations. Indirect Tax Compliance: Lead the U.S. indirect tax compliance function, including oversight of indirect tax compliance processes and personnel. Manage sales and use tax, gross receipts tax, business license taxes, and other transaction-based tax obligations. Ensure timely filings, accurate reporting, and compliance with applicable laws and regulations. Provide guidance on use tax accrual methodologies, taxability determinations, audit support, process improvements, and compliance reporting. Compliance Process Management: Manage the annual compliance calendar and coordinate internal and external resources to ensure completion of all direct and indirect tax filing requirements. Monitor legislative and regulatory developments impacting compliance obligations. Tax Accounting Support: Partner with the Tax Accounting team to provide information required for the quarterly and annual income tax provision process, including current tax calculations, return-to-provision analyses, uncertain tax positions, and related compliance data. Audit & Tax Controversy: Coordinate and manage U.S. federal, state, and local tax examinations, audits, notices, and information requests. Work closely with external advisors and tax authorities to resolve issues while minimizing tax risk and exposure. Business Partnership & Advisory: Collaborate with Accounting, Treasury, FP&A, Legal, Procurement, Contracts, and business leaders to provide guidance on tax compliance implications of business transactions, operational activities, and strategic initiatives. Process Improvement & Technology: Drive continuous improvement initiatives related to tax compliance processes, data collection, automation, and reporting. Leverage tax technology and ERP-enabled solutions to improve efficiency, accuracy, scalability, and control effectiveness. External Advisor Management: Manage relationships with external tax advisors, compliance service providers, and technology vendors to ensure high-quality support and effective execution of compliance activities. Tax Risk & Internal Controls: Maintain and enhance internal controls related to tax compliance activities, supporting SOX requirements, tax governance standards, and overall risk management objectives. Team Leadership & Development: Lead, mentor, and develop tax professionals responsible for U.S. direct and indirect tax compliance activities. Foster a culture of accountability, collaboration, continuous improvement, and operational excellence. Basic Qualifications Education & Experience: Bachelor's degree in Accounting, Finance, Taxation, or a related field. 8+ years of progressive corporate tax, public accounting, or related experience. Demonstrated experience managing and developing tax professionals in a corporate or public accounting environment. Significant experience leading U.S. federal and state income tax compliance processes for multinational organizations, includin