Thermodynamics / Mechanical Engineer

They operate in the natural gas distribution sector, using propane as a direct substitute for natural gas in standby and peaking applications, and are actively developing hydrogen production systems via water electrolysis for utilities and industrial clients pursuing decarbonization. For over 25 years, we have connected thousands of consultants with meaningful roles through a personal, communication-driven approach, partnering with a diverse client base to build high-performing teams and create lasting impact.

Thermodynamics / Mechanical Engineer
Minneapolis, MN
On-Site Only Field Presence Required During Commissioning; No Remote or Hybrid Available
6 month Contract to Hire
Pay Rate: $60.00 - $70.00 per hr / Salary Target: $120,000 $135,000+ Depending on Experience

Job Description:
Our client designs and builds skid-mounted process systems spanning gas handling, liquid processing, phase change, and thermal management. They operate in the natural gas distribution sector, using propane as a direct substitute for natural gas in standby and peaking applications, and are actively developing hydrogen production systems via water electrolysis for utilities and industrial clients pursuing decarbonization. They are adding a Thermodynamics Engineer to work alongside their senior technical lead. The right candidate is equally comfortable in the office and on the shop floor, and has a genuine interest in energy transition and emerging fuel technologies.

Required Skills & Experience

• Mechanical Engineering degree or equivalent; strong candidates from adjacent disciplines will be considered
• 5+ years of applied engineering experience or advanced degree with demonstrated technical depth
• Strong foundation in thermodynamics: heat transfer, phase change, and gas/liquid process systems
• Proficiency with fluid flow analysis, both single-phase and two-phase systems
• Working knowledge of heat exchangers, pump systems, and packaged skid design
• Ability to take a design from concept through to physical fabrication
• Mechanical intuition across valves, compressors, instrumentation, and piping
• AutoCAD proficiency and fluency with MS Office tools
• Able to manage multiple projects with limited supervision

Preferred / Desired Experience

• Experience with RefProp or comparable NIST-based thermodynamic property tools
• Background in industrial refrigeration, large compressor packages, or chemical plant systems
• Familiarity with propane distribution, standby/peaking systems, or natural gas utility infrastructure
• Exposure to hydrogen production, electrolysis systems, or hydrogen fuel handling
• Interest in decarbonization technologies, renewable energy, or emerging fuel pathways
• Field experience: commissioning, construction oversight, or site troubleshooting
• Comfort working from P&ID and mechanical/electrical drawing packages
• Knowledge of piping materials, compatibility, and corrosion mitigation
• PLC familiarity (Allen Bradley or Siemens), I/O configuration, ladder or structured-text logic
• Working knowledge of ASME B31.3, B31.8, B31.12, NFPA 2/58/59/70/72
• Vendor relationships in specialty gas, propane, water treatment, or hydrogen equipment

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