We are looking for a detail-oriented Customer Support Billing Specialist to join a software organization in Milwaukee, Wisconsin on a Contract basis. This position supports billing and accounts receivable activities by investigating payment delays, resolving invoice issues, and helping maintain accurate financial records. The ideal candidate brings strong analytical ability, a customer-focused approach, and the ability to work closely with accounting and post-sale teams in a fast-paced onsite environment.<br><br>Responsibilities:<br>• Review billing records for accuracy, identify discrepancies, and help ensure invoices are issued correctly and on time.<br>• Oversee collection activity by supporting final notice outreach, tracking follow-up efforts, and helping move delinquent accounts toward resolution.<br>• Perform cash reconciliation tasks and assess how payment activity affects account balances and related financial reporting.<br>• Partner with post-sale operations teams to research overdue vendor balances and support accounts receivable follow-up actions.<br>• Provide day-to-day accounting assistance by working with general ledger entries and coordinating with revenue accounting functions.<br>• Use Excel and Salesforce tools to analyze account details, monitor payment trends, and document billing-related activity.<br>• Support payment setup and invoice delivery processes, including troubleshooting workflow issues tied to billing and credit card transactions.