Payroll and Billing Specialist

About Us

Ketel Thorstenson, LLP, is a full‑service accounting firm rich in history, serving clients in the Black Hills region since 1936. Currently, we have 25 partners and over 50 CPAs, with offices in Rapid City and Spearfish, SD, Gillette and now Casper WY. The firm offers a variety of accounting services, specializing in the agricultural, construction, hospitality, estate planning, nonprofit, and government industries.

Our mission is to inspire excellence in our people, clients, and communities by building meaningful relationships through progressive thinking, collaboration, and passion.

The Payroll & Accounts Payable Specialist plays a key role in supporting multiple client organizations by accurately processing payroll, managing AP workflows, maintaining financial records, and ensuring compliance with federal, state, and local regulations. Working within a public accounting firm, this role delivers high‑quality outsourced services while providing exceptional client support and maintaining strong internal workpaper documentation. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.

• Process recurring payrolls for multiple clients, including calculating wages, deductions, garnishments, and employer taxes.
• Prepare and submit payroll tax deposits.
• File quarterly and annual payroll reports (e.g., state reports, Forms W‑2, W‑3).
• Maintain employee and payroll data across various payroll systems and portals.
• Respond to client and employee payroll questions promptly.

• Enter vendor bills, code expenses, and prepare AP batches for approval.
• Process electronic and check payments for vendors.
• Reconcile AP subledgers with general ledgers.
• Support client employees who participate in AP workflows.

• Minimum age of 18
• Reliable cell phone
• Excellent communication and organizational skills
• Highly responsible & reliable
• Ability to work well under pressure in a fast‑paced environment
• Ability to work cohesively as part of a team

• Professionalism
• Integrity / Ethical Conduct
• Critical Thinking
• Problem‑Solving
• Organization
• Prioritization
• Multi‑tasking
• Team Oriented with the ability to work independently.

None

This job operates in a professional office environment. The role routinely uses standard office equipment such as computers, phones, photocopiers, filing cabinets, and fax machines. The role routinely drives on city and county roads.

• The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job.
• While performing the duties of this job, the employee is regularly required to talk or hear. The employee frequently is required to sit; stand; walk; use hands to finger, handle or feel; and reach with hands and arms.
• The employee is occasionally required to sit; climb or balance; and stoop, kneel, crouch or crawl. The employee must frequently lift and/or move up to 20 pounds and occasionally lift and/or move up to 30 pounds. Specific vision abilities required by this job include close vision, distance vision, color vision, peripheral vision, depth perception and ability to adjust focus.

• This is an as needed position working approximately 40 hours per week; core hours of operation are 8:00 am to 5:00 pm Monday‑Friday, some weekend and evening hours may be required.
• Additional hours may be required to include 50 to 60 hours during the busy season.

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Ketel Thorstenson, LLP is committed to being an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, creed, national origin, ancestry, age, religion, disability, gender, pregnancy, sexual orientation, transgender status, gender identity, or any other classification protected under applicable law.