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Mechanical Process Engineer

NV5
life insurance, 401(k)
United States, New Hampshire, Portsmouth
430 West Road (Show on map)
Oct 27, 2025

Mechanical Process Engineer




Job ID
2025-11422

# of Openings
1

Location
US-NH-Portsmouth

Category
Engineering

Type
Regular Full-Time



Overview

About Us: We are a leading engineering, procurement, and construction company specializing in natural gas and liquefied natural gas projects. Our team is passionate about innovation and excellence, and we are looking for talented engineers who are eager to learn, explore new challenges, and contribute to a variety of exciting projects.

Why Join Us?

    Be part of a dynamic, intelligent team that values innovation and continuous learning.
  • Work on diverse and challenging projects that will expand your expertise.
  • Enjoy opportunities for professional growth and development.
  • Contribute to impactful projects with a leader in the natural gas and LNG industry


Responsibilities

  • Perform process design for LNG, Propane, and other natural gas related facilities
  • Establish process requirements to accomplish project goals with input from Project Manager, other disciplines and customer representatives
  • Conduct process modeling and perform necessary engineering calculation to design and size process equipment
  • Size, specify, request quotes for and select major process equipment
  • Work with equipment suppliers during design and fabrication process to ensure acceptance of final product. FAT (factory-acceptance test) attendance is often required
  • Support Process Flow Diagram (PFD) and Piping & Instrumentation Drawing (P&ID) development
  • Support other disciplines with process design, equipment selection, and operation needs
  • Participate in cross discipline design review and process hazard analysis (PHA) evaluations
  • Support/develop sequence of operation (SOO), alarm list, and interlock documents for use in controls programming, system checkout, and project documentation
  • Support project start up and commissioning activities, including develop and oversee commissioning plan, prepare operating procedures, and process checkout/performance testing
  • Evaluate existing / operating processes for the purposes of troubleshooting, optimization, and/or expansion
  • Prepare and conduct training for customer operations staff
  • Travel locally and nationally to customer locations and project sites for evaluations, troubleshooting efforts or commissioning activities. Typical travel is 15%-20% of the time
  • Display a strong commitment to safety - for yourself and for others


Qualifications

Specific Knowledge & Skills

  • Good technical writing, communication, and presentation skills
  • Ability to work effectively as part of a team and build relationships with co-workers, customer and vendors
  • Ability to communicate effectively with co-workers, clients, vendors and subcontractors
  • Proficient in MS Excel, MS Word, MS PowerPoint
  • Experience with Process Modeling software a plus
  • Ability to multi-task, set priorities and manage deadlines
  • Ability to work safely around operating equipment and active construction sites

Education and/or Experience

  • BS degree in Chemical or Mechanical Engineering
  • Professional Engineer (PE, EIT / FE) a plus
  • 10+ years-experience in process engineering preferred

NV5 is a provider of engineering and consulting services to public and private sector clients, delivering solutions through six business verticals: Testing, Inspection & Consulting; Infrastructure; Utility Services; Environmental Health Sciences; Buildings & Program Management; and Geospatial Technology. With offices nationwide and abroad, NV5 helps clients plan, design, build, test, certify, and operate projects that improve the communities where we live and work.

As engineers, architects, construction/program managers, environmental professionals and beyond, we play a significant role in shaping our communities through the services we provide. We are looking for passionate, driven individuals to join our team focused on Delivering Solutions and Improving Lives.

NV5 offers a competitive compensation and benefits package including medical, dental, life insurance, PTO, 401(k) and professional development/advancement opportunities.

NV5 provides equal employment opportunities (EEO) to all applicants for employment without regard to race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, disability, genetic information, marital status, amnesty, or status as a covered veteran in accordance with applicable federal, state and local laws. NV5 complies with applicable state and local laws governing non-discrimination in employment in every location in which the company has facilities. This policy applies to all terms and conditions of employment, including, but not limited to, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training.

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