Senior Tax Processing Specialist

Vertex Inc in; King of Prussia (PA); On-site; USD 87,000 - 113,000; Full time

Job summary

Vertex Inc in King of Prussia, PA, is seeking an experienced tax professional to manage the preparation of 750+ sales and use tax returns monthly for level 3-4 clients, applying compliance knowledge and professional judgment to ensure accuracy and timeliness.

The role includes onboarding new clients, data file review, resolving discrepancies, mentoring 4+ junior staff, leading MSO teams, and developing training materials.

Qualifications

• 8–12 years of related experience in tax processing or accounting.
• Expertise in complex tax compliance for level 3-4 clients in two or more areas.
• Proficiency with Excel, 365, and VITR; ability to leverage technology for automation.
• Experience servicing large, complex client accounts and resolving issues independently.
• Prior mentoring or leadership experience; ability to train junior staff.
• Excellent communication, attention to detail, and time management.
• Bachelor's degree in accounting or business; IPT Sales Tax School or equivalent.

Responsibilities

• Prepare 750+ sales and use tax returns monthly for level 3-4 clients.
• Onboard new clients and establish tax data files in various formats.
• Review and reconcile client tax data; investigate discrepancies.
• Resolve complex compliance issues with professional judgment.
• Lead or participate in MSO special teams; drive process improvements.
• Mentor 4+ junior staff; develop training materials and coaching.
• Utilize Microsoft 365, Excel, and VITR to create efficiencies and automation.
• Accommodate extra hours during peak processing periods (5th–20th).

Education

Bachelor's degree in accounting or business

IPT Sales Tax School (Course I and II) or equivalent

Tools

Microsoft Excel

Microsoft 365

Vertex Indirect Tax Returns (VITR)

Job description

Job Summary

Prepare 750+ sales and use tax returns monthly for level 3-4 clients, applying comprehensive compliance knowledge and independent professional judgment to resolve complex tax reporting issues accurately and on time. Routinely implement new clients, including onboarding and establishing tax data files in various formats; review and reconcile client tax data, investigate discrepancies, and take corrective action. Foster strong client relationships through regular communication, proactively suggest process improvements, and resolve complex compliance issues; track and resolve notices from taxing jurisdictions with proper documentation and timely follow-through. Lead or actively participate in 1-3 MSO special teams, championing innovation and driving process improvement; assist with the development and documentation of internal processes and procedures. Serve as a formal mentor to 4+ junior staff members; develop training materials and lead peer coaching sessions to support team development and knowledge transfer. Utilize Microsoft 365, Excel, and Vertex Indirect Tax Returns (VITR) to create or enhance efficiencies and automation tools; serve as a recognized Innovation Champion within the function. Accommodate additional work hours during peak monthly processing periods, typically the 5th through the 20th of each month.

Required Qualifications

• 8-12 years of related experience in tax processing, accounting, or a related business discipline.
• Comprehensive knowledge of complex tax compliance issues for level 3-4 clients, with specialized expertise in two or more compliance areas.
• Proficiency in Microsoft Excel, Microsoft 365, and Vertex Indirect Tax Returns (VITR); demonstrated ability to leverage technology to create or enhance process efficiencies and automation tools.
• Proven experience servicing large, complex client accounts and independently resolving complex compliance issues with sound professional judgment.
• Prior mentoring or formal leadership experience required; demonstrated ability to develop training materials and effectively coach junior staff members.
• Excellent oral and written communication skills; strong attention to detail with the ability to manage time, priorities, and competing deadlines effectively.
• Bachelor's degree in accounting, business, or a related field; IPT Sales Tax School (Course I and II) or equivalent certification required; or equivalent combination of education and relevant experience.

Preferred Qualifications

• Experience leading cross-functional process improvement or special project teams in a tax processing or compliance environment.
• Exposure to automation technologies such as Robotic Process Automation (RPA) or Alteryx for workflow enhancement.
• Experience initiating and managing electronic filings and payments across multiple taxing jurisdictions.
• Experience developing or maintaining internal standard operating procedures and compliance process documentation.
• Equivalent combination of education, training, and relevant professional experience accepted in lieu of a formal degree.

Vertex Values

• Together We Win: We're building a team of people who are passionate about making an impact for our customers and committed to how that impact is achieved.
• Play to Win or We Don't Play - If we choose to do something, we're choosing to do it because we plan to win. That mindset raises our bar on product quality, customer outcomes, and how we show up for one another.
• Work As a Team, Putting the Customer At the Core - Our customers are our true north. Whatever your role, ask: how will this help a customer succeed today? We earn trust through outcomes, not promises.
• Achieve Excellence With Integrity, Speed, and Agility - The market isn't slowing down. We'll move faster, adapt quickly, and never compromise on doing things the right way — for teammates, customers, and partners.
• Innovate Boldly With a Growth Mindset - Progress demands smart risk. We'll try new approaches, learn fast, and keep pushing the boundaries — especially where AI can remove friction and unlock value.
• Communicate with Care, Candor and Transparency - Honest, constructive conversations make us better. Let's speak plainly about what's working and what isn't and help each other improve.

Pay Transparency Statement

US Base Salary Range: $86,600.00 - $112,500.00. Base pay offered to new hires may vary based upon factors including relevant industry and job-related skills and experience, geographic location, and business needs. The range displayed does not encompass the full potential of the role, which allows for further growth and career progression. In addition, as a part of our total compensation package, this role may be eligible for the Vertex Bonus Plan (VOB), a role-specific sales commission/bonus, and/or equity grants.

Equal Opportunity and Accessibility

Vertex is an affirmative action and equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability. If you'd like to view a copy of the company's affirmative action plan, please email [e-mail]. If you are an individual with a disability and would like to request a reasonable accommodation as part of the employment selection process, please contact 610-640-4200 or [e-mail]. This telephone line and email address is reserved solely for job seekers with disabilities requesting accessibility assistance or an accommodation in the job application process. Please do not call about the status of your job application if you do not require accessibility assistance or an accommodation. Messages left for other purposes, such as following up on an application or non-disability related technical issues, will not receive a response.