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Arbor Energy

Thermodynamics Performance Engineer

Arbor Energy · El Segundo, CA

Posted about 3 months ago · $140,000 - $155,000

or apply directly on Arbor Energy's site. We never take the application ourselves.

Is this posting real?

This role has been open
82 days
Arbor Energy's roles stay open a median of 83 days
Reposted
No
Salary listed
Yes
95% of Arbor Energy's roles list one
Ghost-job risk at Arbor Energy
high
15 stale, 0 reposted of 19 open
Hiring momentum
24 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-10-25

Measured from postings appearing on and disappearing from Arbor Energy's own greenhouse board since 2026-08-03. Full hiring picture for Arbor Energy.

About this role

The Thermodynamics Performance Engineer will be responsible for developing and managing dynamic and steady-state thermodynamic models for a supercritical CO₂ Brayton cycle power system. This role involves running performance studies, reconciling model predictions with test data, and enhancing modeling capabilities for simulation and testing. Collaboration with various engineering teams is essential to integrate data and develop simulation infrastructure that supports the overall project goals.

Our read on this posting4.0out of 5
benefits
5/5
freshness
1/5
career value
4/5
role clarity
5/5
pay transparency
5/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Arbor Energy as an employer.

What you need

  • Bachelor's degree in Chemical, Mechanical, Aerospace, Nuclear, or related Engineering field
  • 4+ years of experience in cycle performance analysis, thermodynamic systems modeling, or dynamic process simulation
  • Strong fundamentals in thermodynamics, fluid mechanics, and heat transfer applied to integrated multi-component systems
  • Demonstrated experience building dynamic simulation models of fluid/thermal systems in an industry-grade 1D system simulation platform
  • Working knowledge of integrated power loop equipment and dynamic response
  • Programming proficiency in Python and one of MATLAB/Simulink, Modelica, or equivalent

Nice to have

  • Deep experience with industry dynamic simulation platforms applied to turbomachinery or closed-loop thermal-fluid systems
  • Background in nuclear thermal-hydraulics with fast-dynamic single-phase modeling experience
  • Working knowledge of real-fluid EOS handling and turbomachinery map interpolation near critical conditions
  • History of making and defending tool/methodology decisions in a constrained engineering environment
  • Experience with supercritical CO₂, closed Brayton cycles, or high-pressure systems

What you get

  • Pre-IPO stock options
  • Medical, dental, and vision insurance (Arbor covers 90% for employees)
  • Basic life insurance fully covered
  • Health savings account (HSA) with matching
  • Flexible savings account (FSA)
  • Unlimited PTO

Worth weighing

  • Onsite opportunity in El Segundo, CA may limit remote work options
  • Base pay range is $140,000 - $155,000, which may vary based on qualifications and location
  • The role requires strong collaboration across multiple engineering disciplines, which may involve navigating different team dynamics

Summarised from Arbor Energy's posting. Read the full original.

Listed by Arbor Energy on their greenhouse job board, last confirmed open on 2026-10-25. PitchMeAI is not the employer.

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