3PL logistics Billing & Office Administrator (AP/AR)

Job Title: Billing & Office Administrator (AP/AR)
Type: Full-time

Role Summary

We are looking for a detail oriented Billing & Office Administrator to handle monthly customer invoicing, accounts payable, accounts receivable, and day-to-day office administration at our Melville office. If you are strong in QuickBooks and Excel, comfortable chasing down invoices and payments, and like variety in your day, we would like to hear from you.

What you will do

Prepare and send monthly customer invoices, including backup documentation

Enter vendor bills, track approvals, and support the weekly payment run

Monitor AR aging, send statements and reminders, and follow up on open balances

Allocate UPS/FedEx parcel charges to the right customers and resolve routine billing corrections

Set up new customers, collect required paperwork, and maintain organized files

General office administration and backup support to the accounting team

What we are looking for

2+ years in billing, AP/AR, bookkeeping, or office administration

QuickBooks experience (required) strong Excel skills

Comfortable on the phone and by email with customers and vendors

Logistics, warehousing, or 3PL background a plus but not required

Associate's degree or equivalent experience

IWG is a rapidly growing third-party logistics (3PL) provider serving some of the nation's largest retailers and eCommerce brands. With operations spanning retail distribution, eCommerce fulfillment, transportation, compliance management, and warehouse services, we pride ourselves on delivering exceptional service and operational excellence to our clients.