Wittenbach
Angie Sullivan has extensive experience in billing and accounts receivable management, currently serving as the Billing/AR Manager at Wittenbach Business Systems since July 2018. Prior to this role, Angie held multiple positions at Acton Mobile, including Billing and Contract Manager and Billing Manager/Financial Systems Analyst, showcasing a progressive career from Billing Specialist to leadership roles over several years. Additionally, Angie gained valuable experience as a Technical Billing Coordinator at Ociter Enterprises, contributing to a solid foundation in billing operations and financial systems analysis.