Senior Tax Accountant

The Lead Tax Accountant manages and oversees the accurate and timely preparation of federal, state, and international tax returns, while leading the global income tax provision process in accordance with ASC 740. This role ensures full compliance with tax regulations and Sarbanes-Oxley requirements, provides subject-matter expertise on complex international tax matters, and drives continuous improvement in tax processes, controls, and systems. The position offers the opportunity to contribute to a fast-growing, multi-billion-dollar startup environment with potential for additional equity-based compensation.

Responsibilities

• Manage and oversee the timely and accurate preparation and filing of federal, state, and international tax returns across multiple jurisdictions.

• Coordinate with external tax advisors to ensure compliance with applicable tax laws, regulations, and filing requirements.

• Lead the quarterly and annual global income tax provision process in accordance with ASC 740, including calculating effective tax rates, managing deferred taxes, and preparing related financial statement disclosures.

• Ensure compliance with Sarbanes-Oxley (SOX) requirements for all tax-related processes by maintaining robust control documentation and coordinating with internal and external auditors.

• Provide subject-matter expertise on international tax matters, including transfer pricing, foreign tax credits, base erosion and profit shifting (BEPS) initiatives, and cross-border transactions.

• Monitor changes in global tax legislation and assess the potential impact on the organization’s tax position and reporting obligations.

• Identify, evaluate, and implement tax planning opportunities to optimize the organization’s global tax position while maintaining compliance.

• Manage and coordinate federal, state, and international tax audits, including responding to information requests, preparing supporting documentation, and assisting with audit resolutions.

• Continuously evaluate and enhance tax processes, internal controls, and systems to improve efficiency, accuracy, and compliance.

• Collaborate with cross-functional teams to support business initiatives, providing clear explanations of complex tax issues to non-tax stakeholders.

• Prepare, review, and maintain detailed documentation to support tax positions, provisions, and compliance filings.

• Utilize ERP systems, tax provision and compliance tools, and financial analysis software to support tax reporting and analysis.

Essential Skills

• A minimum of 5+ years of progressive tax experience.

• Experience working in a Big 4 public accounting firm or a large multinational corporate tax department.

• Strong knowledge of U.S. GAAP and ASC 740, including income tax accounting and financial reporting requirements.

• Demonstrated experience with federal, state, and international tax compliance.

• Proven experience preparing and reviewing income tax provisions.

• Solid understanding of SOX 404 and internal controls over financial reporting.

• Strong analytical and problem-solving skills with the ability to manage multiple priorities and complex projects.

• Excellent written and verbal communication skills, including the ability to explain complex tax issues to non-tax stakeholders.

• Meticulous attention to detail to ensure accuracy in reporting and documentation.

• Demonstrated ability to work independently and collaboratively within cross-functional teams.

• Proficiency with Enterprise Resource Planning (ERP) systems.

• Experience using tax provision and compliance tools.

• Advanced skills in Microsoft Excel and familiarity with other standard financial analysis tools.

Additional Skills & Qualifications

• Experience with international tax concepts such as transfer pricing, BEPS initiatives, and foreign currency considerations.

• Exposure to tax planning for multinational operations and cross-border transactions.

• Experience working in a high-growth or startup environment is beneficial.

• Ability to adapt to evolving regulatory requirements and changing business needs.

Work Environment

The role follows a hybrid work model, with three days in the office and two days remote each week, providing a balance of in-person collaboration and flexible work-from-home time. The position reports to a Lead executive, offering direct visibility and engagement with leadership in a dynamic, multi-billion-dollar startup environment. The team leverages modern Enterprise Resource Planning (ERP) systems, tax provision and compliance tools, and advanced Microsoft Excel and financial analysis software to support tax reporting and planning activities. The culture emphasizes high performance, collaboration across functions, and continuous improvement, with the potential for Restricted Stock Units (RSUs) as additional, equity-based compensation.

Job Type & Location

This is a Permanent position based out of Miami, FL.

Pay and Benefits

The pay range for this position is $100000.00 - $115000.00/yr.

Health insurance (medical, dental, vision) Retirement benefits (likely 401k-type plans) Paid time off / vacation policies

Workplace Type

This is a hybrid position in Miami,FL.

Application Deadline

This position is anticipated to close on Jun 19, 2026.

About Aston Carter

Aston Carter provides world-class corporate talent solutions to thousands of clients across the globe. Specialized in accounting, finance, human resources, talent acquisition, procurement, supply chain and select administrative professions, we extend the capabilities of industry-leading companies. We draw on our deep recruiting expertise and expansive network to meet the evolving needs of our clients and talent community with agility and excellence. With offices across the U.S., Canada, Asia Pacific and Europe, Aston Carter serves many of the Fortune 500. We are proud to be a ClearlyRated Best of Staffing® double diamond winner for both client and talent service.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

If you would like to request a reasonable accommodation, such as the modification or adjustment of the job application process or interviewing process due to a disability, please email View email address on click.appcast.io (%View email address on click.appcast.io) for other accommodation options.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.