Embodiments of the invention are directed to systems, methods, and computer program products for automating bulk data conversion processes of one or more database management systems. Data conversion projects of focus may comprise conversion of a large bulk of data with a wide range in order of magnitude. The system is designed and driven by the present constraints of large data conversion and is based on principles of reviewability, minimization of manual review and development work, persistence of data stores for data result comparison, process optimization for downstream review and certification, timely execution, and allowance for concurrent development by multiple systems and resources.