Administrative Assistant - Earth Systems

???? Part-Time Administrative Assistant
Location: Bismarck, ND (On-site) or Tioga, ND (On-site)
Company: Earth Systems LLC
Schedule: 20–25 hours/week | Flexible days
Reports to: Office Manager

Join a mission-driven team at Earth Systems LLC!
We’re an environmental consulting firm looking for a proactive, detail-oriented Administrative Assistant to support our Bismarck office. If you enjoy variety, independence, and making an impact behind the scenes, this role is for you.

• Handle billing, accounts payable/receivable, and invoice tracking
• Maintain and process employee time sheets accurately and on schedule
• Keep financial records organized and up to date
• Communicate with vendors and clients professionally
• Support front-office tasks: phones, mail, scheduling, and greetings
• Help with project documentation and team coordination
• Pitch in on other admin/accounting tasks as needed

• Experience with billing, AP/AR, and QuickBooks
• Solid Excel skills and general accounting software know-how
• Strong attention to detail and organizational skills
• Clear communication and a friendly, professional vibe
• Ability to juggle tasks and work independently
• Team spirit and reliability

• Flexible schedule across 3–5 days/week
• Hourly pay: $18–$22, based on experience
• Small, collaborative team with room to grow
• Meaningful work in a purpose-driven company

Ready to make a difference?
Send your resume and a short cover letter telling us why you're a great fit. Must be available to work on-site in Bismarck or Tioga, ND.