Mechanical Technician, Process Gas Systems

About Valar Atomics

At Valar Atomics, we're redefining what's possible in energy. Our mission is to make clean, high-temperature nuclear power scalable—unlocking abundant energy for industry, hydrogen, and next-generation manufacturing. We are a team of builders, engineers, and operators who believe nuclear energy should be fast to deploy, factory-made, and built for the real world. Our first pilot plant in Orangeville, Utah will demonstrate how advanced nuclear systems and fuel fabrication can power the future.

Joining Valar Atomics means becoming part of a company where autonomy, ownership, and impact exist at every level.

The Team

As part of the Engineering organization, Mechanical Engineering designs and develops the mechanical systems, components, and equipment that power Valar's advanced nuclear technologies. The team ensures designs are robust, manufacturable, and optimized for long-term performance.

The Role

The Mechanical Technician builds, tests, and commissions pressurized process gas skids for our advanced nuclear reactor. The work spans tube bending, piping, compressors, chillers, heat exchangers, and pressure vessels, from first fit-up through leak testing, pressure testing, and startup. You will maintain high standards for quality, safety, and workmanship and partner closely with engineering to turn designs into reliable, buildable hardware.

Key Responsibilities

• Build and test process system skids in accordance with approved drawings,specifications, procedures, and work instructions; work independently and coordinate with other technicians to support the build schedule.
• Maintain high standards for safety, workmanship, cleanliness, and procedure adherence throughout tube bending, fitting makeup, bolted joint assembly, testing,and commissioning activities.
• Work closely with engineering, quality, and operations; review drawings and procedures for buildability and raise drawing discrepancies, design conflicts, orunsafe conditions early.
• Build process system skids to P&IDs, isometric and general arrangement drawings,specifications, and work instructions.
• Measure, bend, cut, debur, and install stainless steel and alloy tubing; make upand inspect compression fittings with gap gauges per the manufacturer's
• instructions.
• Install and fit up piping, flanges, valves, regulators, relief devices, filters, and pressure vessels; assemble flanged joints with correct gaskets and controlled torque sequences (ASME PCC-1).
• Install, align, and connect compressors, pumps, chillers, coolers, and heatexchangers, and coordinate instrumentation installation with electrical and I&Ctechnicians.
• Maintain cleanliness and foreign material exclusion (FME) controls for high-puritygas service, and rig and move skids and equipment safely using cranes, hoists, and forklifts.
• Perform hydrostatic and pneumatic pressure tests per ASME B31.3, BPVC Section VIII, and approved test procedures.
• Participate in mechanical completion walkdowns, punch lists, and system turnover, and support commissioning and startup of compressors, chillers, heatexchangers, and control and relief valves.
• Diagnose mechanical problems such as leaks, vibration, and overheating, and perform preventive and corrective maintenance to minimize downtime.
• Maintain tools, calibrated test equipment, and parts inventory, and participate in incident investigations and continuous improvement of build and test processes.

Basic Qualifications

• High school diploma or equivalent.
• 4+ years of hands-on mechanical experience in a process plant, chemical plant, power generation, or similar industrial environment, with significant work on pressurized gas systems.
• Hands-on experience bending and installing stainless steel tubing and making…