Lock Box Operations Program Associate I at First Interstate BancSystem

First Interstate Bank is hiring a Lock Box Operations Program Associate I to support deposit-processing operations for its Lock Box program. The role handles customer post office box payments, remittance processing, data entry, account setup, invoice and credit-memo uploads, customer inquiries, fraud-risk identification, and mailroom support. It requires a high school diploma or GED, a bachelor's degree is preferred, and 1–3 years of related experience or equivalent education and experience. The position is based in Billings, Montana, or Bellevue, Nebraska, with a Monday–Friday 8:00 a.m.–5:00 p.m. schedule.