← Search all jobs

Mechanical Design Engineer II - Core Unit

Nikkiso Clean Energy & Industrial Gases

Irvine, CA · Posted November 13, 2026

Just laid off? Start here: a plan for the first weeks

See every open role at Nikkiso Clean Energy & Industrial Gases

More in California job market · Energy & Utilities · Engineering jobs

More roles at Nikkiso Clean Energy & Industrial Gases

Similar jobs

Where Irvine, CA ranks

Where Irvine, CA placed in our monthly rankings, month by month. Each month stays online at its own address.

Skills this job asks for

Say which you have and which you want to build. We use it to match you to jobs like this one.

About the job

Company Overview

Nikkiso Clean Energy & Industrial Gases is a leading provider of cryogenic pumps, heat exchangers, process systems, turboexpanders, services, and solutions for the liquefied natural gas (LNG), liquefied hydrogen (LH2), and industrial gases industries. Applications include fueling stations, marine engines, peak shaving, power generation, virtual pipelines, carbon capture, geothermal power and well stimulation. We are a subsidiary of Nikkiso Company Ltd, a leading industrial manufacturer headquartered in Tokyo, Japan, with $1.5 B USD in annual revenue, 8000 + employees worldwide, and publicly traded on the Tokyo Stock Exchange.

Job Overview

Turboexpander and Compressor product core unit design and mechanical calculations. Understand and design all aspects and features of turboexpander products. Become a mechanical design specialist in machinery, standardization and low-cost manufacturing methods. Actively engage in continually improving turbo expander products designs and core components to simplify, standardize, reduce cost and increase performance. Document designs and decisions in a simple and understandable manner.

Responsibilities

Designs, models, and tests prototypes for products

Conducts research and creates design proposals for projects

Creates concepts, performance, and production criteria

Improve the process of machine design.

Deliver the design based on the reequipments of the development project master specification.

Have a strong understanding of product development and machine design process.

Be proficient in the turbo machine and part design process.

Understand machine shop practice and to be able to communicate with engineering and machine shop personnel.

Have a strong knowledge of design and drafting practice to provide design layouts, 3-D models and 2-D drawings.

Interact confidently and authoritatively with Engineering, marketing and application group and providing accurate technical information.

Prepare specifications for the buyout components, such as housings, gear box, mechanical seals and other core unit components.

Maintain up to date documentation on all responsible projects.

To be able to work alone or in a group.

Assist shop in issues related of turbo expanders.

Qualifications

Bachelor of Scientce degree in Mechanical Engineering

Experience analyzing engineering sketches, specifications, related data and drawings to determine design factors such as size, shape and arrangement of parts

Ability to make equipment layouts and perform fundamental engineering calculations

At least five years of design engineering experience. Prefer experience with turbo machinery

Experience planning and formulating design engineering program and works with project team staff according to project requirements

Ability to review product design for compliance with engineering principles, company standards and customer contract requirements, and related specifications

Advanced knowledge of MS Office Suite

Work Environmental and Physical Demands:

In order to perform the duties of this job, the employee may be required to stand, walk, sit, reach with hands and arms, climb or balance, stoop or kneel, talk and hear, and use fingers and hands to feel objects, tools or controls.

Ability to lift up to 25 lbs. may be necessary.

Overtime may be necessary as the workload dictates. This may include week days, weekends, nights and/or holidays.

Job will generally be performed in an office environment, but may require travel to a Client's office, production facility or industrial/construction job site. Conditions will vary at each location, but the conditions listed above will generally apply.

Other Duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.

Environmental Safety Requirements

New Employee Safety Training is required by all newly hired employees, including Safety Awareness

All safety related training is provided and tracked by the EHS Manager

Job specific training modules deemed necessary by employee’s Manager or Director will be required of all employees on an ongoing basis

Employees are required to wear Nikkiso provided PPE as/when needed. PPE’s include, safety shoes, safety glasses, face shields, FR clothing, cryogenic gloves, cryogenic apron, cut resistant gloves, safety gloves, hearing protection, hard hats & dust masks. Failure to comply with Nikkiso ACD safety requirements will result in disciplinary actions, up to and including termination.

In compliance with the Americans with Disabilities Act of 1990, the employer will provide reasonable accommodations to meet the work environmental and physical demands listed above.

Experience and Education:

Bachelor’s degree in a relevant engineering field is required

Proficient in SolidWorks and FEA

Five years of experience in a similar role is required

Equivalent combination of education, training and experience in an engineering design role may be accepted

The knowledge, skills and abilities listed above are typically acquired through the levels of education and experience listed. An equivalent combination of education and/or experience that provides an applicant with the listed knowledge, skills and abilities required to perform the essential duties and responsibilities of the job, may be accepted.

Salary: $70,843 - $98,103

EEOC Statement

Equal Opportunity Employer/Veterans/Disabled

Nikkiso CE&IG is proud to be an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.