Amentum is a global leader in designing, engineering, and modernizing critical systems and programs of national importance across defense, security, intelligence, energy, and the environment. Driven by our commitment to creating a secure, sustainable future, we innovate as a collaborative team of passionate professionals dedicated to making a meaningful impact.JOB RESPONSIBILITIES The Pipefitter / Steamfitter is responsible for inspecting, maintaining, repairing, and certifying boilers, unfired pressure vessels (UPVs), and associated systems in accordance with regulatory standards. The role requires expertise in maintaining and repairing components of the Steam Generation Plant, Demineralized Water Plant, and connected distribution and collection systems. Key responsibilities include, but are not limited to: Certifying boilers and unfired pressure vessels (UPVs) in compliance with UFC 3-430-07 or P-606 requirements, as outlined in J-1605000-03. Performing preventive and corrective maintenance on equipment and components related to the Steam Generation Plant, Demineralized Water Plant, and their associated distribution and collection systems. Inspecting and repairing piping systems, valves, pumps, and other components to ensure safety, reliability, and operational efficiency. Troubleshooting system malfunctions, diagnosing faults, and executing repairs to minimize downtime and maintain plant operations. Replacing worn or damaged components and performing welding to repair or construct piping systems when necessary. Conducting hydrostatic and pressure tests to certify system integrity and compliance with safety and performance standards. Monitoring and maintaining control systems associated with steam and water generation equipment to ensure optimal performance. Following technical directives, plans, and manuals for all repairs, installations, and maintenance tasks in the steam and water generation plants. Documenting maintenance activities, certifications, and operational logs to comply with regulatory and organizational requirements. Maintaining a clean, organized, and safe workspace while adhering to environmental and workplace safety improvements. MINIMUM REQUIREMENTS Qualification to certify boilers and unfired pressure vessels (UPVs) per the UFC 3-430-07 or P-606 certifications as required. Proven experience with steam systems, water generation systems, and complex piping infrastructure. Demonstrated ability to perform maintenance and repairs on components for Steam Generation Plants, Demineralized Water Plants, and associated systems. Knowledge of pipefitting and steamfitting principles, including welding, cutting, bending, and pressure testing. Understanding of safety standards for high-pressure systems and compliance with industry best practices. High school diploma or equivalent. Must be in possession of a valid passport and able to travel internationally. Passport must be valid for a minimum of one (1) year at the time of hire. Ability to successfully pass contract medical requirements and maintain physical readiness for the duration of deployment. PREFERRED QUALIFICATIONS Completed formal apprenticeship or technical training in pipefitting, steamfitting, or related fields. Experience supporting military steam systems or performing maintenance in utility or industrial plant environments. Advanced certifications in welding or experience with pressurized and high-temperature piping systems. Familiarity with Navy or government specifications for steam and water system operations. Prior experience in an OCONUS (Outside the Continental United States) or remote environment is preferred.