All Services Programming & Development Programming $50/hr · Starting at $25 Developer of MS Access and Excel database systems and financial models. Specializing in Operations Management, Billing, Collections Contact Relationship Management CRM systems. About $50/hr · Ongoing Download Resume Developer of MS Access and Excel database systems and financial models. Specializing in Operations Management, Billing, Collections Contact Relationship Management CRM systems. Skills & Expertise AccessBillingCollectionsDatabase SystemsDeveloperExcelFinanceLegalManagementMsOperations Management 1 Reviews Hector_Sosa says, Mark is a pleasure to work with. He takes time to understand the project and we are very please with the outcome. for Fleet Like Kind Exchange Software on Nov 28, 2005 Browse Similar Freelance Experts Billing ServicesOperations ManagersManagement ExpertsCollection Managers