Senior Director, Global Tax Reporting and U.S Compliance

Amentum is a global leader in advanced engineering and innovative technology solutions, trusted by the United States and its allies to address their most significant and complex challenges in science, security, and sustainability. Our people apply undaunted curiosity, relentless ambition, and boundless imagination to challenge convention and drive progress. Our commitments are underpinned by the belief that safety, collaboration, and well-being are integral to success.

About the role

We are seeking a Senior Director, Global Tax Reporting and U.S. Compliance to lead the Company’s worldwide accounting for income taxes under ASC 740 and its U.S. federal, state, and international income tax compliance functions. Reporting to the Vice President, Tax, this is a highly visible, hands-on leadership role responsible for the accuracy, timeliness, and integrity of the Company’s quarterly and annual global tax provision, related SEC disclosures, and U.S. income tax filings.

The director will lead a talented, energetic, and highly collaborative team of tax professionals. We are seeking a leader who complements these qualities—someone who brings positive energy, takes ownership, follows matters through to completion, and approaches challenges with optimism, practicality, and a solutions-oriented mindset. This role is ideal for someone who thrives in an extremely dynamic, diverse, and fast-paced environment.

Candidates must be within driving distance to our offices in Northern Virginia, and U.S. citizenship is required.

Responsibilities

• Lead the global ASC 740 tax provision processes, from planning and forecasting through calculations, recording, analysis, reporting, and long-range planning.
• Ensure the group's tax accounting processes, documentation, and related systems comply with Sarbanes-Oxley internal control requirements.
• Serve as the primary liaison with external auditors on ASC 740 audit support, disclosures, and controls.
• Maintain relationships with internal and external stakeholders, including the controller’s office, FP&A, IT, internal audit, treasury, external service providers, and auditors.
• Lead, supervise, and improve tax accounting processes and delivery schedules; monitor tax law and accounting pronouncement changes.
• Assist with mentoring, developing the tax team’s technical skills, and maintaining and enhancing team dynamics.
• Direct preparation and review of consolidated U.S. federal and multi-state corporate income/franchise tax returns.
• Oversee U.S. international calculations, including GILTI, FTC, FDII, Section 163(j), and U.S. international reporting.
• Manage extensions, estimated payments, refunds, amended returns, and tax account administration.
• Oversee outsource and co-source third-party providers handling specific compliance obligations, filings, or specialized federal and state schedules.
• Implement automation, analytics, and AI in areas such as data collection, reconciliation, workpapers, and tax calendar management.

Skills

• ASC 740 & SEC Disclosures: Expert-level understanding of accounting for income taxes under US GAAP, including quarterly/annual global tax provisions, deferred taxes, valuation allowances, and uncertain tax positions (ASC 740-10/FIN 48).
• Corporate & International Tax Law: In-depth knowledge of U.S. federal consolidated corporate returns, multi-state franchise/income tax compliance, and complex U.S. international tax mechanics (GILTI, FTC, FDII, and Section 163(j)).
• SOX Internal Controls: Thorough knowledge of Sarbanes-Oxley (SOX) compliance, risk management frameworks, and internal control requirements related to financial reporting for the tax function.
• Tax Technology & Automation: Mastery of modern data analytics infrastructure, tax provision software, and data management pipelines.
• Advanced Data Analytics & Tech: Hands-on proficiency using advanced Excel, Power BI, Power Query, Alteryx, and SQL to automate data collection, build dynamic workpapers, and eliminate manual processes.
• Executive & Technical Communication: Strong ability to articulate complex tax concepts, reporting risks, and SEC financial statement disclosures clearly to external auditors, the VP of Tax, and cross-functional corporate leaders.
• Tax Compliance Management: Precision in directing complex corporate filings, managing extensions, tracking estimated payments, and overseeing co-sourced or outsourced third-party tax service providers.
• Financial Process Optimization: Skill in designing scalable, controlled, and simplified workflows out of highly complex tax data streams.
• Hands-on Strategic Leadership: Ability to operate as a technically credible leader who sets the long-term global tax strategy while willingly diving into granular technical details when necessary.
• Team Development & Mentorship: Ability to cultivate, coach, and inspire a highly collaborative team of high-caliber tax professionals, building out their technical skills and driving engagement.
• Ownership & Problem-Solving: Ability to maintain high initiative, anticipate business needs, work through roadblocks with an optimistic, solutions-oriented mindset, and dependably drive projects to completion.
• Cross-Functional Collaboration: Ability to build and maintain strong strategic relationships across internal departments (Controller’s office, FP&A, IT, Internal Audit, Treasury) and with external auditors.

Qualifications

• Typically requires 10+ years of progressive corporate income tax experience in a multinational public company, Big Four public accounting firm, or a combination, with a Bachelor’s degree in Accounting, Finance, or a related field.
• CPA and/or Master’s degree in a relevant field.
• Deep experience in ASC 740; proven experience leading global tax provision and SEC reporting.
• Strong U.S. federal and state income tax compliance experience.
• Experience in the government contracting industry preferred.
• Onesource Tax Compliance and Provision experience.
• Advanced Excel skills; familiarity with Power BI, Power Query, Alteryx, and SQL.

Pay

Base Salary Range: $250,000+ plus bonus.

Benefits

• Health, dental, and vision insurance.
• Paid time off and holidays.
• Retirement benefits (including 401(k) matching).
• Educational reimbursement.
• Parental leave.
• Employee stock purchase plan.
• Tax-saving options.
• Disability and life insurance.
• Pet insurance.

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.