Senior Mechanical Engineer, Piping Systems

Antares • Los Angeles, CA

2d • $150,000 - $190,000 • Onsite

About The Position

As a Senior Mechanical Engineer at Antares, you will own the design, analysis, and integration of high-temperature, high-pressure piping systems within the Power Conversion System (PCS). The piping connects turbomachinery, heat exchangers, and other major components of a closed Brayton cycle. You will ensure structural integrity, thermal compatibility, and reliable operation across operating conditions, taking designs from initial layout through detailed engineering, manufacturing, and testing.

Requirements

• Bachelor's degree in Mechanical Engineering or a related engineering discipline.
• At least 5 years of relevant experience for the Senior level.
• Experience designing high-temperature and/or high-pressure piping systems for industrial or power generation applications.
• Proficiency in piping stress analysis, including thermal expansion, support reactions, and equipment nozzle loads.
• Familiarity with piping design codes such as ASME B31.3 or B31.1.
• Experience developing and reviewing piping layouts, P&IDs, engineering drawings, and fabrication documentation.

Nice To Haves

• Experience in Nuclear, Power Generation, Oil & Gas, Aerospace, or other high-performance thermal-fluid systems.
• Proficiency with piping stress analysis tools such as CAESAR II, AutoPIPE, or equivalent, and familiarity with FEA tools.
• Experience with piping vibration, pulsation, acoustic loading, water hammer, and fatigue assessment.
• Experience designing pipe supports, flexible connections, expansion joints, and high-temperature piping interfaces.
• Familiarity with ASME BPVC requirements, including Section III, and applicable nuclear quality standards.
• Hands-on experience supporting fabrication, installation, commissioning, and troubleshooting of complex piping systems.
• Experience working in a fast-paced hardware development environment.

Responsibilities

• Own the design, layout, and mechanical integration of PCS piping systems, including piping specifications, supports, expansion joints, and component interfaces.
• Perform piping stress and structural analyses under sustained, thermal expansion, transient, vibration, and fatigue loading conditions.
• Evaluate piping loads on connected equipment, including turbomachinery, heat exchangers, pressure vessels, and supporting structures.
• Develop detailed piping designs, engineering calculations, specifications, drawings, and documentation in accordance with applicable ASME codes and standards.
• Collaborate with thermal, mechanical, structural, and systems engineers to optimize piping configuration, pressure losses, manufacturability, and system integration.
• Support hardware procurement, fabrication, assembly, testing, and troubleshooting, including working directly with suppliers and technicians.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior