Sr. Tax Accountant

We are looking for an experienced Sr. Tax Accountant to support a high-volume tax workflow for an IT Software organization in Aliso Viejo, California. This Long-term Contract position will focus on researching and resolving primarily state corporate income tax notices while also assisting with related property tax, transaction tax, and business license matters. The ideal candidate brings strong corporate tax knowledge, sound judgment, and the ability to analyze incomplete information to determine accurate next steps and avoid unnecessary payments.Responsibilities:• Review, investigate, and respond to a large volume of incoming tax notices with an emphasis on state corporate income tax matters.• Analyze account details, filings, and payment history to determine the cause of tax notices and recommend the appropriate resolution.• Prepare documentation and correspondence needed to address notices, disputes, adjustments, and follow-up actions with tax authorities.• Support additional notice-related work involving property tax, transaction tax, and business license obligations as priorities shift.• Assist with estimated tax payment support and related corporate income tax activities to help maintain compliance.• Track open tax issues, organize supporting records, and maintain clear status updates to ensure timely resolution of outstanding items.• Collaborate with internal tax stakeholders to gather missing information, clarify filing positions, and resolve complex notice questions efficiently.