Senior Manager, U.S. Tax Compliance

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Senior Manager, U.S. Tax Compliance

At K , we deliver science, technology and engineering solutions to governments and companies around the world. K  employs approximately 37,000 people worldwide with customers in more than 85 countries and operations in over 28 countries. K  is proud to work with its customers across the globe to provide technology, value-added services, and long-term operations and maintenance services to ensure consistent delivery with predictable results.

Trinzic is the future independent company to be created through the planned spin-off of K 's Mission Technology Solutions business, expected in January 2027. Our people work at the frontier of what is possible, delivering solutions in challenging environments and advancing some of the world's highest-priority national security and space missions.

Backed by decades of mission success, deep expertise, and trusted partnerships, Trinzic will launch as a global organization with more than 18,000 employees supporting customers around the world. Join us at a defining moment and help shape the future of a company built to tackle complex challenges and make a meaningful impact.

Candidates who join K 's Mission Technology Solutions business before the spin-off will transition to Trinzic when the separation is complete and will not need to reapply for employment.

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 support tax planning initiatives, manage tax risk, maintain strong compliance processes, 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 K '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.

• U.S. Direct Tax Compliance:
  Lead all U.S. federal, state, and local income tax compliance activities, including oversight of corporate income tax returns, estimated tax payments, extensions, elections, and related filings.
• Indirect Tax Compliance:
  Oversee U.S. indirect tax compliance processes, including 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 tax laws and regulations.
• 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 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…