RESPONSIBILITIES: Kforce has a client in Waltham, MA that is seeking a Customer/1 C1 Billing Tester with hands-on experience in the Energy and Utilities industry. This role will work closely with functional and technical teams to ensure system accuracy, data integrity, and end-to-end testing coverage for billing-related initiatives. Key Tasks: * Execute functional, regression, and integration testing for Customer/1 MF billing modules * Validate billing logic, rate plans, discounts, taxes, and i