Over 30 years of experience Switched and Special Access, Carrier Access Billing System (CABS) utilized by telecommunications providers. Managed and oversaw development and implementation of order entry, workflow, provisioning, billing and mediation systems, testing and validating applications for the accurate installation and billing of products and services provided by a diverse range of telecommunications providers. Oversaw and participated with various teams, consolidating, converting and migrating from one system to another or installing green-field installation teams. These efforts involved, but were not limited to preparation of user requirements, management of changes and developing and executing test cases.