Lionel Griego is an experienced Pumping Service Maintenance Supervisor with a demonstrated history in the energy sector. Currently serving at ProPetro Services, Inc. since January 2019, Lionel oversees mechanical service and repair of stimulation equipment to address the increasing demands of domestic energy development. Additionally, Lionel has held a similar role at Pioneer Natural Resources Company since September 2004. Prior to these positions, Lionel worked as a Mechanical Technician at Halliburton from October 1999 to September 2004. Educational background includes studies at San Juan College.