Demo

Administrative Assistant - Seasonal

Ketel Thorstenson, LLP
Gillette, WY Temporary
POSTED ON 11/20/2025 CLOSED ON 12/16/2025

What are the responsibilities and job description for the Administrative Assistant - Seasonal position at Ketel Thorstenson, LLP?

Description

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 22 partners and over 50 CPAs, with offices in Rapid City and Spearfish, SD, and Gillette, 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.

Responsibilities

The Seasonal Administrative Assistant provides overall office and tax processing support during busy seasons. This will include high volume repetitive tasks and the ability to provide overall support for office operations as requested.

  • Front Desk support including - answering incoming calls / routing calls.
  • Variety of administrative and clerical duties with day-to-day office support.
  • E-filing tax returns.
  • Processing of W-2's and 1099’s tax documents and related forms.
  • Preparing workflows in tax software systems.
  • Prepare completed tax form to send to client.
  • Stuffing envelopes for mass mailings.
  • Maintain and clear filing cabinets; ensure accurate and secure physical document storage.
  • Scan, organize, and upload client documents.
  • Assist clients with general inquiries, scheduling needs, and invoice payments etc.
  • Follow up with clients in a timely manner.
  • Opening and distributing mail.
  • Running firm errands.
  • Provide backup to other administrative tasks.
  • Assisting with staff meals to include picking up orders, set up and clean up.

Supervisory Responsibility

None.

Requirements

Required Qualifications:

  • A valid driver's license
  • Minimum age of 18
  • Reliable car and clean driving record
  • Reliable cell phone
  • Familiarity with local streets, neighborhoods, and routes
  • Time management to ensure deliveries are made on schedule
  • 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

Desired Skills

  • Team Player
  • Communication
  • Confidentiality
  • Willingness to Learn

Shared Values

  • Truth
  • Excellence
  • Innovation
  • Community
  • Diversity

Benefits

  • Work life balance: PTO, Extended Illness Leave, 8 paid holidays, Flex Hours - outside of peak season, Community Service Opportunities, Paid Volunteer Time, & Dress for your day.
  • Health and Wellness: High Deductible Health Plan, Dental, Vision, Long Term Disability, Short Term Disability, Basic and Voluntary Life Insurance, Voluntary Accident Insurance, & Voluntary Critical Illness Insurance.
  • Financial Wellness: 401k Retirement Plan, Flexible Spending Account (FSA), Health Savings Account (HSA), Financial Advising through Morgan Stanley, Tax Season Incentives, Employee Referral Program
  • Career Growth: Tuition Assistance, Assistance with Professional Certifications, Promotional Opportunities, Path to Partner
  • For more information about our benefits, visit www.ktllp.cpa/careers.

Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Work Environment and Physical Demands

  • This is an as needed position working approximately 35-40 hours per week with overtime as needed. Core hours of operation are 8:00 am to 5:00 pm Monday- Friday, some weekend and evening hours may be required. Travel may be required in town as needed. This is an on-site position in our Gillette, WY office.
  • 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.

Become a member of our team – apply today!

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.

Hourly Wage Estimation for Administrative Assistant - Seasonal in Gillette, WY
$21.00 to $26.00
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