Client Accounting Associate; Accounts Payable

Ketel Thorstenson, LLP (KT) is seeking a detail-oriented Accounts Payable Associate to join our Client Accounting Services team in any one of our Rapid City, SD, Spearfish, SD, Casper, WY, and Gillette, WY office locations. In this role, you will support multiple client organizations by managing accounts payable processes, ensuring timely and accurate invoice processing, and providing high-quality client service in a professional services environment.

• Process vendor invoices for multiple clients, including coding and documentation
• Manage accounts payable workflows across client systems and platforms
• Prepare and execute vendor payments (ACH, check, wire) in accordance with client and firm policies
• Monitor outstanding payables, due dates, and cash requirements
• Assist with vendor setup and maintenance, including W-9 collection and 1099 tracking
• Communicate with clients and vendors regarding invoice status, approvals, and payment timing
• Reconcile accounts payable subledgers to general ledger balances
• Identify and resolve discrepancies, including duplicate or incorrectly coded invoices
• Maintain organized, accurate work papers in accordance with firm standards
• Support month-end and year-end processes related to accounts payable

• Associate’s or Bachelor’s degree in Accounting, Finance, Business, or related field, or equivalent experience
• Minimum 2 years experience with accounts payable, billing, or general accounting functions
• Experience with accounting software and Microsoft Office, including Excel

• Experience working with multiple clients or in a service-based environment
• Familiarity with accounts payable platforms (e.g.,  or similar systems)
• Strong attention to detail and accuracy
• Ability to manage multiple priorities and meet deadlines

• Full-time position
• Standard schedule is 40 hours per week, Monday – Friday
• Additional hours may be required during peak periods
• Based in any one of our Rapid City, SD, Spearfish, SD, Casper, WY, and Gillette, WY office locations

Salary depends on experience and expertise. Compensation includes a comprehensive benefits package.

• Paid Time Off and Holiday
• Paid Parental Leave
• Flexible Work Schedules
• Medical, Dental, Vision, Life, and Disability Coverage
• 401(k) Retirement Plan and Financial Wellness Resources
• Professional Development and Training
• Certification Assistance
• Tuition Reimbursement
• Paid Volunteer Time and Community Involvement Opportunities

Ketel Thorstenson, LLP is a full-service accounting and consulting firm established in 1936. With offices across South Dakota and Wyoming, and a team with over 25 partners and 50+ CPAs, KT serves a diverse client base across a wide range of industries—from closely held businesses to complex organizations in agriculture, construction, hospitality, nonprofit, government, and beyond. We’re more than a traditional accounting firm—we’re a team that values relationships, innovation, and impact.

At KT, you’ll find a collaborative, growth-focused environment where your ideas are welcomed, your contributions matter, and your career can evolve alongside the clients and communities we serve.