You will perform preventive and corrective maintenance on mobile nitrogen pumpers and related cryogenic equipment, including diesel and gasoline engines, hydraulic systems, cryogenic trailers and pumps, tractor units, pickup trucks, and safety relief systems to ensure safe and reliable operation. Troubleshoot, diagnose, and repair equipment failures in both shop and field environments, responding to unplanned mechanical events and restoring equipment to service in accordance with manufacturer and company specifications.