Accounts Payable Specialist

Accounts Payable Specialist — Sigma Commercial LLC

Location: Milwaukee, WI — On-site Employment Type: Full-Time

About Us

Sigma Commercial LLC is a Milwaukee-based holding company providing shared back-office support to a group of operating businesses spanning residential remodeling, commercial maintenance, and residential property management.

The Role

We're looking for an Accounts Payable Specialist to own invoice-to-payment for our group of companies. You'll process a high volume of vendor invoices across multiple entities and cost centers, keep vendors paid on time, and keep our books clean enough that month-end close doesn't turn into a scramble.

What You'll Do

Process vendor invoices: verify accuracy, code to the correct entity/property/job, and route for approval

Match invoices to purchase orders and receipts; flag and resolve discrepancies

Prepare and execute payment runs (checks, ACH) on schedule

Maintain vendor files, including W-9 collection and 1099 tracking

Reconcile vendor statements and respond to vendor payment inquiries

Support month-end close with AP accruals and account reconciliations

Work across multiple accounting/property management software platforms as needed by entity

What You'll Bring

Prior accounts payable experience, ideally across multiple entities, properties, or cost centers

Comfortable in QuickBooks or similar accounting software; able to pick up additional platforms as needed

High attention to detail and strong organizational skills, especially when managing volume across several entities at once

Clear, professional communication for vendor follow-up

Ability to work independently and keep pace during busy periods (month-end, high invoice volume)