Billing Coordinator

GP Generate is seeking an entry-level Billing Coordinator to join our busy Finance & Accounting department. This role is critical for ensuring the accurate and timely processing of client invoicing, and involves various responsibilities such as data entry, invoice generation support, and billing reconciliation. Responsibilities Accurately and efficiently perform a high volume of data entry related to client billable expenses, purchase orders, and vendor invoices directly into our agency management system, Advantage Assist the Billing Manager in the preparation and generation of preliminary and final client invoices for media, production, and fee-based services Maintain well-organized and complete electronic and physical billing files, ensuring all backup documentation is properly attached and accessible for audits Work with Media and Project Management teams to verify costs and placements against client media flowcharts and documentation, often utilizing our internal tool, Guideline Assist in reconciling client budgets, project expenses, and billed amounts to ensure accuracy and compliance with client contracts Flag discrepancies or potential billing issues to the Billing Manager promptly and assist in the necessary follow-up or research Provide general administrative support to the Billing and Finance team as needed, including organizing reports and responding to internal inquiries regarding invoice status Skills High School Diploma or equivalent; Associate's or Bachelor's degree in Accounting, Finance, or Business Administration is a plus Exceptional attention to detail and a strong commitment to accuracy in data entry and calculations Proficiency in Microsoft Office Suite, particularly Excel (basic formulas and data manipulation) Strong organizational skills with the ability to manage multiple tasks and deadlines in a fast-paced environment Excellent written and verbal communication skills A professional, positive, and collaborative attitude Previous experience (internship or entry-level role) in an administrative, data entry, or accounting support function Direct experience with Advantage or other similar agency accounting software is a significant plus Familiarity with agency-specific media tools or flowcharting software like Guideline Benefits Medical Dental Vision 401k Matching Company Overview “Smart advertising campaigns begin with smart media choices. It was founded in 2009, and is headquartered in Los Angeles, California, USA, with a workforce of 51-200 employees. Its website is