Senior Mechanical/Process Engineer - LNG & Industrial

HDR; Denver (CO); On-site; USD 130,977 - 187,110; Full time

Job summary

HDR is seeking a Senior Mechanical/Process Engineer to support LNG, industrial gas, and hydrocarbon infrastructure projects across North America, including Denver, CO. The role emphasizes mechanical design, P&IDs, and system calculations, leveraging core mechanical engineering to develop LNG/cryogenic expertise.

You will lead multi-disciplinary teams, perform pipe stress analyses, support feasibility studies, and coordinate with vendors, clients, and field personnel.

Qualifications

• Bachelor's degree in Mechanical Engineering.
• Minimum 10 years in mechanical system design for commercial or institutional buildings.
• Professional Engineer license recognized by the licensing board (PE or P.Eng).
• Strong knowledge of Microsoft Office, MS Project and AutoCAD.
• Demonstrated leadership, prior team coordination and project management experience.
• Experience with architectural/engineering or engineering consulting firms.
• Active participant in employee-owned culture.

Responsibilities

• Develop mechanical and/or process system designs including P&IDs, equipment sizing, and system calculations.
• Prepare equipment specifications and support procurement activities.
• Perform pipe stress analysis (AutoPIPE) and engineering evaluations.
• Support feasibility studies, conceptual design, and cost estimating.
• Lead multiple projects as a mechanical discipline lead and coordinate with teams.
• Support bid evaluations, vendor coordination, and contractor interactions.
• Provide field support including site visits, inspections, and start-up assistance.
• Support client presentations, proposals, and ongoing client relationship development.
• Perform other duties as needed.

Skills

LNG/cryogenic exposure

Team leadership

Project management

Piping design fundamentals

Education

Bachelor's degree in Mechanical Engineering

PE or P.Eng license

Tools

AutoCAD

NavisWorks

AutoCAD Plant 3D

Revit

Caesar II

AutoPIPE

Job description

At HDR, our employee-owners are fully engaged in creating a welcoming environment where each of us is valued and respected, a place where everyone is empowered to bring their authentic selves and novel ideas to work every day. As we foster a culture of inclusion throughout our company and within our communities, we constantly ask ourselves: What is our impact on the world?

Watch Our Story:' https://www.hdrinc.com/our-story'

Each and every role throughout our organization makes a difference in our ability to change the world for the better. Read further to learn how you could help make great things possible not only in your community, but around the world.

HDR is seeking a Senior Mechanical/Process Engineer to support our growing portfolio of liquified natural gas (LNG), industrial gas, and hydrocarbon infrastructure projects across North America. This role is ideal for engineers with strong fundamentals in piping systems, pressure vessels, rotating equipment, or process systems who are interested in applying their experience to LNG and cryogenic applications.

The successful candidate will work with a multi-discipline group of engineers and technicians delivering engineering and design services for energy and industrial facilities. Projects include system upgrades, life extension, and new facility design. Direct LNG experience is not required; candidates with strong core mechanical engineering experience will be supported in developing LNG and cryogenic expertise.

In the role of Senior Mechanical/Process Engineer - LNG & Industrial Systems, we'll count on you to:

• Develop mechanical and/or process system designs including P&IDs, equipment sizing, detailed design, and system calculations
• Prepare equipment and design specifications and support procurement activities
• Perform pipe stress analysis (AutoPIPE) and engineering evaluations
• Support feasibility studies, conceptual design, and project cost estimating
• Serve as a mechanical or discipline lead on multiple projects, coordinating with multi-discipline teams
• Support bid evaluations, vendor coordination, and contractor interactions
• Provide field support including site visits, inspections, and commissioning/start-up assistance
• Support client presentations, proposals, and ongoing client relationship development
• Perform other duties as needed

Preferred Qualifications

• Experience with LNG, cryogenic systems, or industrial gas facilities preferred
• Experience with piping design and stress analysis tools such as AutoPIPE or Caesar II
• Experience with hydrocarbon or industrial facility mechanical systems including rotating equipment, compressors, heat exchangers, and pressure vessels
• Experience supporting feasibility studies and large-scale project development
• Familiarity with 3D design tools such as NavisWorks, AutoCAD Plant 3D, or Revit
• Experience with project scheduling tools such as Microsoft Project or Primavera
• Demonstrated ability and interest to act as a Team Leader

Required Qualifications

• Bachelor's degree in Mechanical Engineering
• A minimum of 10 years in mechanical system design of commercial or institutional buildings
• Requires professional engineering license recognized by the licensing board for the location of the position offered. Example: Professional Engineer (PE or P.Eng) license.
• Strong knowledge of Microsoft Office, MS Project and AutoCAD
• Demonstrated leadership skills, previous team coordination and project management experiencePrevious experience with an architectural/engineering or engineering consulting firm
• An attitude and commitment to being an active participant of our employee-owned culture is a must

What We Believe

HDR is our company. Together, we build on each other's life experiences and perspectives to make great things possible every day. This shapes our collaborative culture, encourages organizational trust and connects us closer to the clients and communities we serve.

Our Commitment

As employee owners, we all have a role in creating an inclusive environment where each of us is welcomed, valued, respected and empowered to bring our authentic selves to work every day.

We provide a comprehensive benefits package that promotes employee ownership, employee health, performance, and success, which includes medical, dental, vision, short and long-term disability, life insurance, an employee assistance program, paid time away, parental leave, paid holidays, a retirement savings plan with employer match, employee referral bonus and tuition reimbursement. The expected compensation range for this position depends upon skills, experience, education and geographical location. (Stated benefits are for full-time regular positions. Temporary and part-time roles eligible for limited benefits.) {Rosemont, IL}: $130,977.00 - $187,110.00 {Denver, CO}: $130,977.00 - $187,110.00 {Providence, RI}: $125,024.00 - $178,605.00 {Rocky Hill, CT}: $130,977.00 - $187,110.00 {Boston, MA}: $142,884.00 - $204,120.00

Primary Location:United States-Illinois-Rosemont

Other Locations:United States-Pennsylvania-Philadelphia, United States-Georgia-Atlanta, United States-North Carolina-Charlotte, United States-South Carolina-Greenville, United States-South Carolina-Charleston, United States-Massachusetts-Boston, United States-Colorado-Denver, United States-Alabama-Birmingham, United States-Connecticut-Rocky Hill, United States-Rhode Island-Providence, United States-New Hampshire-Bedford, United States-Georgia-Savannah, United States-Pennsylvania-Pittsburgh, United States-Texas-Houston

Industry:Industrial

Schedule:Full-time

Employee Status:Regular

BusinessClass:Industrial Services

Job Posting:Jul 23, 2026

At HDR, we are committed to the principles of employment equity. We are an Aff