Major Duties/Responsibilities: Lead research initiatives aimed at improving the performance, reliability, safety, flexibility, and economic competitiveness of the existing nuclear reactor fleet, including power uprates, operating-margin assessments, fuel-cycle optimization, and plant modernization. Provide strategic and technical leadership for a multidisciplinary R&D portfolio spanning reactor thermal hydraulics, nuclear plant performance, advanced reactor systems, computational multiphysics, digital twins, and integrated energy systems.