Mechanical Design Engineer III

Nikkiso Clean Energy & Industrial Gases is a leading provider of high pressure and cryogenic systems, cryogenic pumps, heat exchangers, process systems, turboexpanders, and services for liquefied natural gas (LNG), liquefied hydrogen (LH2), compressed natural gas (CNG), compressed hydrogen (GH2) and industrial gases (LN2, LAr, LO2) industries. Applications include fueling stations, trailer loading systems, marine fuel systems, LNG peak shaving, power generation, and virtual pipelines. We are a subsidiary of Nikkiso Company Ltd, a global industrial manufacturer with $1.5 B USD in annual revenue, 8,000+ employees worldwide, and publicly traded on the Tokyo Stock Exchange.

About the role

This in-person, on-site role in Escondido, CA emphasizes direct collaboration with engineering, manufacturing, and field teams. The position involves mechanical design of cryogenic and high-pressure (up to 20,000 psig) gas transfer systems, including project management tasks such as interfacing with customers, providing schedule updates, and submitting project documentation.

Responsibilities

• Provide mechanical engineering design of cryogenic and high-pressure systems.
• Meet key performance indicators, including completing all contractual obligations on schedule and within budget.
• Apply engineering design codes, including piping system and pressure vessel design codes.
• Perform component selection, thermodynamic, and pipe flow calculations.
• Support field start-up and commissioning activities, including on-site troubleshooting, system validation, and collaboration with operations and service teams.
• Work in a team environment and utilize system safety and risk assessment techniques (HAZOP, HAZID, What-If) in mechanical design and design reviews.
• Develop P&IDs, piping isometrics, pump skid designs, and trailer loading skid designs.
• Required travel: up to 25%.

Requirements

• Bachelor’s Degree in Mechanical Engineering with 2 years of experience or Master’s degree in Mechanical Engineering.
• Fluid transfer system knowledge (pump selection, pipe flow calculations, relief valve sizing).
• Ability to read and develop P&IDs.
• Familiarity with pump selection and operations.
• Proficiency with AutoCAD, Inventor, SolidWorks, or similar software.

Preferred Qualifications

• Master’s degree in Mechanical Engineering.
• Cryogenic system design, fabrication, and start-up experience.
• High-pressure system design, fabrication, and start-up experience.
• 5+ years of related experience in cryogenic or high-pressure systems.
• Startup and commissioning experience.
• System control narrative development.
• Centrifugal and positive displacement pump system selection and integration.

Pay

$83,821 – $153,600 per year.