Billing & Client Finance Analyst

At OGS, we're looking for a detail-oriented Billing & Client Finance Analyst to support BBDO Chicago. In this role, you'll partner closely with Finance, Account, Production, and Client Procurement teams to ensure accurate billing, expense tracking, reconciliations, and vendor payments — playing a key role in client relationships and agency profitability.
What you'll do:
Managing client invoicing and billing cycles
Reviewing timesheets and reconciling expenses
Supporting production billing and cost allocation
Handling paid-when-paid vendor processing and reconciliations
Managing multiple client accounts simultaneously (typically 6–7)
Ensuring high accuracy and strong attention to detail across all financial processes
Communicating clearly and professionally with internal teams and clients
Collaborating cross-functionally while managing timelines and deadlines effectively
Supporting financial reporting and month-end close activities
What we're looking for...