Cryogenic & High-Pressure Mechanical Design Engineer III

Nikkiso Co.; Escondido (CA); Hybrid; USD 84,000 - 154,000; Full time

Job summary

Nikkiso Clean Energy & Industrial Gases in Escondido, CA is seeking a Mechanical Engineer III to support cryogenic and high‑pressure system design, sizing, and piping layouts. You will work closely with engineering, manufacturing and field teams in a hands-on, on-site environment.

The role requires project management, timely documentation, and adherence to design codes, with duties spanning valve sizing, PSV sizing, thermodynamic analyses, and system validation. Travel up to 25% may be required.

Qualifications

• Bachelor's Degree in Mechanical Engineering (required or equivalent).
• Experience with fluid transfer systems and pressure relief sizing.
• Ability to read and develop P&ID diagrams.
• Familiarity with pump selection and operation.
• Knowledge of engineering design codes for piping and pressure vessels.
• Proficiency with CAD software (AutoCAD/Inventor/SolidWorks).

Responsibilities

• Provide mechanical design for cryogenic and high‑pressure systems.
• Meet key performance indicators and complete contractual obligations on schedule and within budget.
• Collaborate with engineering, manufacturing and field teams.
• Perform thermodynamic and pipe flow calculations.
• Support field start-up, commissioning, and on-site troubleshooting.

Skills

Fluid transfer systems knowledge

P&ID reading & development

Pump selection & operation

HAZOP/HAZID/What-If risk assessment

CAD software: AutoCAD

CAD software: Inventor

CAD software: SolidWorks

Education

Bachelor's Degree in Mechanical Engineering

Master's Degree in Mechanical Engineering

Tools

AutoCAD

Inventor

SolidWorks

Job description

Nikkiso Clean Energy & Industrial Gases in Escondido, CA is seeking a Mechanical Engineer III to support cryogenic and high‑pressure system design, sizing, and piping layouts. You will work closely with engineering, manufacturing and field teams in a hands-on, on-site environment.

The role requires project management, timely documentation, and adherence to design codes, with duties spanning valve sizing, PSV sizing, thermodynamic analyses, and system validation. Travel up to 25% may be required.