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Lng Cryogenic Engineer information

What does an LNG Cryogenic Engineer do?

An LNG Cryogenic Engineer specializes in the design, operation, and maintenance of systems that handle liquefied natural gas (LNG) at extremely low temperatures. Their responsibilities include ensuring the safe storage, transport, and processing of LNG, developing cryogenic equipment, and troubleshooting technical issues related to temperature and pressure. They work with advanced materials and technologies to prevent leaks and maintain system integrity, often collaborating with multidisciplinary teams. Their expertise is crucial for efficient, safe, and environmentally responsible LNG operations.

What are some common challenges faced by LNG Cryogenic Engineers when working onsite at LNG facilities?

LNG Cryogenic Engineers often encounter challenges related to maintaining and troubleshooting highly sensitive cryogenic equipment in extreme temperature conditions. Ensuring the integrity of piping and storage systems while adhering to strict safety protocols can be demanding, especially during maintenance or emergency situations. Additionally, collaboration with multidisciplinary teams, such as process engineers and safety managers, is essential to resolve complex operational issues and optimize plant performance. Being adaptable and detail-oriented is crucial for success in this dynamic environment.

What are the key skills and qualifications needed to thrive as an LNG Cryogenic Engineer, and why are they important?

To thrive as an LNG Cryogenic Engineer, you need a solid background in mechanical or chemical engineering, with expertise in thermodynamics and cryogenic systems, typically supported by a relevant engineering degree. Familiarity with industry-standard design software (such as AutoCAD or Aspen HYSYS), knowledge of LNG processing equipment, and certifications like Professional Engineer (PE) are commonly required. Strong problem-solving abilities, attention to detail, and effective teamwork and communication skills help distinguish top performers in this field. These competencies are crucial for ensuring the safe, efficient, and reliable design and operation of complex LNG facilities under demanding conditions.

What is the difference between Lng Cryogenic Engineer vs LNG Plant Operator?

AspectLng Cryogenic EngineerLNG Plant Operator
CredentialsEngineering degree, certifications in cryogenics or mechanical engineeringHigh school diploma or technical training, safety certifications
Work EnvironmentDesign, develop, and oversee cryogenic systems in industrial or research settingsOperate and monitor LNG plant equipment on-site
Industry UsageUsed in LNG production, storage, and transportation projectsPrimarily involved in daily plant operations and safety compliance

While both roles are essential in the LNG industry, Lng Cryogenic Engineers focus on designing and maintaining cryogenic systems, whereas LNG Plant Operators handle the day-to-day operation of LNG facilities. Understanding these differences helps in choosing the right career path or job search focus within the LNG sector.

What are popular job titles related to Lng Cryogenic Engineer jobs?

For Lng Cryogenic Engineer jobs, the most frequently searched job titles are:

Infographic showing various Lng Cryogenic Engineer job openings in the United States as of September 2026, with employment types broken down into 1% Internship, 89% Full Time, 7% Part Time, and 3% Contract. Highlights an 84% Physical, 5% Hybrid, and 11% Remote job distribution.

Mechanical Design Engineer III

Escondido, CA • Hybrid

Nikkiso Cryogenic Industries
See more jobs at Nikkiso Cryogenic Industriesexternal

$83K - $153K/yr

Full-time

Re-posted 18 days ago

Job description

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 system, LNG peak shaving, power generation, and virtual pipelines.

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.


We are currently looking for a Mechanical Engineer III for our Nikkiso Applied Technology business unit in Escondido, CA. The ideal candidate will assist with mechanical calculations such as valve sizing, PSV sizing, pump/compressor sizing, pipe stress, flow modeling and mechanical design such as P&IDs, piping isometrics, pump skid design and trailer loading skid designs.  The position will require some project management as well that includes interfacing with the customer, providing schedule updates, and submitting all required project documentation. Typical projects involve cryogenic transfer systems and high pressure (20,000 psig) gas transfer systems. This is an inperson, onsite role that emphasizes direct collaboration with engineering, manufacturing, and field teams. Remote or hybrid work is not available.

Salary Range:

$83,821 To $153,600 Per Year


Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.

  • Provide mechanical engineering design of cryogenic and high-pressure system. 
  • Ability to meet key performance indicators, including completing all contractual obligations on schedule and within budget.
  • Ability to work in team environment
  • Application of Engineering Design Codes, including but not limited to piping system design code and pressure vessel design codes. 
  • Responsible for component selection.
  • Perform 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.

  • Bachelor's Degree in Mechanical Engineering with 2 years 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&ID
  • Familiarity with P&IDs
  • Familiarity with pump selection and pump operations
  • Working knowledge of system safety and risk assessment techniques (HAZOP, HAZID, What-If) and their integration into mechanical design and design reviews
  • Proficiency with AutoCAD, Inventor, or SolidWorks or similar software
  • Required Travel: Up to 25%

Preferred Experience

  • Masters’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

Nikkiso 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.

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