Senior Thermal & Fluids Engineer for Clean Power Systems

MaC VC; Hawthorne (CA); On-site; USD 140,000 - 200,000; Full time

Benefits offered by this job

Equity options

Customer medical coverage 100%

Dental and vision coverage

Daily catered lunch

Team building outings

Job summary

Critical Energy is hiring a Senior Mechanical Engineer to lead thermal and fluid dynamics efforts for our geothermal power generation systems. You will own system-level modeling, 1D simulations, and integration of heat exchangers, turbines, pumps, and cooling loops.

Collaborate across Turbomachinery, Manufacturing, and Field Ops to optimize performance and reliability. Ideal candidates have 5+ years designing complex systems from concept to realization, strong fundamentals in thermodynamics, and

Qualifications

• Bachelor's degree in mechanical engineering or related field.
• 5+ years designing and building complex systems from 0 to 1.
• Strong fundamentals in fluid mechanics, thermodynamics, and materials.
• Experience with CAD and Siemens NX.
• Proven cross-functional collaboration across disciplines.

Responsibilities

• Define system requirements, interfaces, and performance budgets for thermal and fluid subsystems.
• Own system PFD and P&ID.
• Develop 1D models of thermo-fluid systems using commercial software or Python.
• Support system trade studies evaluating performance, efficiency, and cost impacts.
• Perform hand calculations to size components and estimate flow rates.
• Conduct CFD and thermal analyses to evaluate heat transfer and losses.
• Assist in test plan development and instrumentation strategies.
• Analyze experimental data to refine models and improve design.
• Support development of control strategies for thermal/fluid systems.
• Prepare design documentation and vendor relation materials.
• Collaborate with Field Ops for design feedback post-delivery.

Skills

Thermal modeling

CFD analysis

Python programming

Cross-functional collaboration

Education

Bachelor's degree in mechanical engineering

Tools

Siemens NX

Aspen

Dymola

ANSYS Fluent

Job description

Critical Energy is hiring a Senior Mechanical Engineer to lead thermal and fluid dynamics efforts for our geothermal power generation systems. You will own system-level modeling, 1D simulations, and integration of heat exchangers, turbines, pumps, and cooling loops.

Collaborate across Turbomachinery, Manufacturing, and Field Ops to optimize performance and reliability. Ideal candidates have 5+ years designing complex systems from concept to realization, strong fundamentals in thermodynamics, and