Senior Tax Accountant

Senior Tax Accountant

Hybrid Schedule | 3 Days Onsite, 2 Days Remote (After onsite training period) 6-Month Contract-to-Hire Opportunity

Elevate Your Accounting Career

Ready to take the next step beyond traditional accounting? This Senior Tax Accountant role offers a unique blend of month-end close, tax compliance, financial analysis, and strategic initiatives at a growing FinTech company. Open due to an internal promotion, it's a great opportunity to expand your skillset and build a long-term career.

Why Candidates Are Excited About This Opportunity:

✔ Opportunity to join a dynamic, stable, and growing industry within FinTech / SaaS

✔ Hybrid work schedule after training

✔ High-visibility role with exposure to accounting, tax, FP&A, and strategic projects

✔ Opportunity created through internal promotion

✔ Contract-to-hire potential with long-term growth opportunities

✔ Exposure to modern finance technologies, including Dynamics 365, Avalara, and AI tools

✔ Collaborative team environment where your ideas for process improvement are valued

What You'll Be Doing:

• General Accounting: 35%

• Tax & Compliance: 35%

• Special Projects & Ad Hoc Analysis: 20%

• Team Collaboration & Cross-Functional Support: 10%

Accounting & Financial Reporting

• Lead month-end and year-end close activities to ensure timely and accurate financial reporting.

• Prepare and post journal entries and reconcile balance sheet accounts.

• Analyze payroll, incentive compensation, employee benefits, deferred compensation, accruals, reserves, receivables, and tax-related accounts.

• Research and explain account fluctuations and financial variances.

• Review revenue transactions and customer invoicing to ensure compliance and accuracy.

• Assist with budgeting, forecasting, and financial analysis activities.

• Support internal and external audits by preparing schedules and supporting documentation.

Tax & Regulatory Compliance

• Manage multi-entity federal, state, and local tax compliance requirements.

• Partner with external tax advisors on corporate tax return preparation and filings.

• Respond to agency notices and tax-related inquiries.

• Oversee sales tax compliance activities, including administration of Avalara and related filing requirements.

• Maintain business licenses, registrations, annual reports, and other regulatory filings.

• Track critical filing deadlines and compliance obligations.

Process Improvement & Strategic Projects

• Maintain accounting policies, process documentation, and internal controls.

• Identify opportunities to improve efficiency, automation, and financial controls.

• Participate in contract reviews and assess financial implications of business agreements.

• Conduct research and analysis for acquisitions, business initiatives, and special projects.

What We're Looking For:Required Qualifications

✅ Bachelor's degree in Accounting, Finance, or related field

✅ Strong understanding of GAAP and financial reporting principles

✅ Experience with ERP/accounting systems and advanced Excel skills

✅ Excellent analytical, organizational, and problem-solving abilities

✅ Ability to manage multiple priorities and meet critical deadlines, including 7-day close

✅ Strong communication and cross-functional collaboration skills

✅ Ability to manage multiple priorities and meet critical deadlines

✅ Public accounting experience from a CPA firm

✅ Ability to manage multiple priorities and meet critical deadlines

✅ Experience with multi-state tax compliance and regulatory filings

Preferred Qualifications

⭐ Public accounting experience (3+ years preferred, but not required)

⭐ Experience with multi-state tax compliance and regulatory filings

⭐ Exposure to ASC 606 revenue recognition

⭐ SaaS, Technology, or Financial Services industry experience

⭐ Experience with Dynamics 365 and Avalara

⭐ Familiarity with AI tools such as Microsoft Copilot

Ready to take the next step in your accounting career? Apply today and join a team where your expertise will directly influence business decisions, process improvements, and financial succes

Job Type & Location

This is a Contract to Hire position based out of Ontario, CA.

Pay and Benefits

The pay range for this position is $38.46 - $47.21/hr.

Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: • Medical, dental & vision • Critical Illness, Accident, and Hospital • 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available • Life Insurance (Voluntary Life & AD&D for the employee and dependents) • Short and long-term disability • Health Spending Account (HSA) • Transportation benefits • Employee Assistance Program • Time Off/Leave (PTO, Vacation or Sick Leave)

Workplace Type

This is a hybrid position in Ontario,CA.

Application Deadline

This position is anticipated to close on Oct 8, 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® Platinum Award 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.