Johnson Controls

Senior Thermal Simulation Engineer (onsite)

Johnson Controls$105K — $160K *
Aerospace & Defense
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in Mechanical Engineering, Aerospace Engineering, or a relevant field.
  • 7+ years of experience in thermal-fluid simulation and analysis.
  • Familiarity with a wide range of reference literature on thermal and fluid behavior.
  • Experience with CFD simulation software to conduct simulations and analyses.
  • Ability to deliver quick estimations for thermal performance in an evolving environment.
  • Understanding of the engineering design process and how simulation influences it.

Responsibilities

  • Perform hand calculations and build scaling models for thermal performance.
  • Conduct coupled thermo-fluid simulations using CFD software.
  • Guide customer development projects with thermal analysis expertise.
  • Develop best practices for simulation processes and strategies.
  • Collaborate with Solutions Engineers and Thermal Design Engineers to optimize designs.

Benefits

  • Company offers a competitive bonus plan based on performance.
  • Flexible work arrangement with onsite and remote options.
  • Access to industry-leading technology and simulation talent.
  • Opportunity to influence simulation best practices.
  • Engagement in high-stakes projects within a fast-evolving environment.
Full Job Description

What you will do

Thermal limits are the hidden bottleneck holding back the world’s most advanced technologies—AI infrastructure, semiconductor equipment, power electronics, and mission-critical defense systems. At Johnson Controls, we don’t work around those limits—we eliminate them.

Powered by our breakthrough Stack Forging™ process, we engineer high-performance thermal components and integrated cooling loop solutions designed for direct deployment into AI, HPC, and other demanding environments. The result: a best-in-class thermal management platform built for the systems that push performance to the edge—and beyond.

In this role, you won’t just model performance—you’ll help redefine what’s possible. Leveraging both first-principles analysis and advanced computational tools, you’ll predict and push the limits of JCI’s cutting-edge thermal management technologies.You’ll collaborate closely with Solutions Engineers and Thermal Design Engineers to solve complex, high-stakes challenges and optimize designs that meet—and exceed—demanding customer requirements. Along the way, you’ll play a key role in shaping our simulation best practices, influencing how we scale excellence, and continuing to learn alongside some of the industry’s top simulation talent.

This position requires an onsite presence 4 days a week, with an option to work remotely 1 day a week. Candidates must be commuting distance to the facility, or able to relocate. Only US citizens and/or Permanent Residents of the US will be considered, as sponsorship is not available for this position.

How you will do it

  • Hand calculations, select appropriate correlation coefficients, and build simple scaling models

  • Perform coupled thermo-fluid simulations using CFD software to predict pressure drop and thermal performance

  • Provide guidance and input on customer development projects

  • Develop and improve best practices around simulation

What you will need
Required

  • Bachelors in Mechanical Engineering, Aerospace Engineering, or other relevant field

  • Experience with CFD simulation software

  • 7+ years of experience in thermal-fluid simulation and analysis, including but not limited to comfort with selecting turbulence closures, running mesh refinement studies, estimating model error, and extracting dimensionless correlation coefficients from simulations

  • Experience with a wide range of reference literature on calculating thermal and fluid behavior of components

  • Ability to deliver results in a quickly evolving environment, delivering estimates for thermal performance of a design within a few days to accelerate customer-facing projects

  • Familiarity with design engineering work, specifically, an understanding of what an engineering design process looks like and how their work informs that process

HIRING SALARY RANGE: $105,000 - $160,000 (Salary to be determined by the education, experience,knowledge, skills, and abilities of the applicant, internal equity, and alignment with marketdata.) This role offers a competitive Bonus plan that will take into account individual, group,and corporate performance. This position includes a competitive benefits package. Theposted salary range reflects the target compensation for this role. However, we recognizethat exceptional candidates may bring unique skills and experiences that exceed the typicalprofile. If you believe your background warrants consideration beyond the stated range, weencourage you to apply. To support an efficient and fair hiring process, we may usetechnology assisted tools, including artificial intelligence (AI), to help identify and evaluatecandidates. All hiring decisions are ultimately made by human reviewers. For details, pleasevisit the About Us tab on the Johnson Controls Careers site athttps://jobs.johnsoncontrols.com/about-us

About Johnson Controls

Johnson Controls International plc is a multinational conglomerate headquartered in Cork, Ireland that produces automotive parts such as batteries and electronics and HVAC equipment for buildings. It employs 105,000 people in around 2,000 locations across six continents. As of 2019, it was listed as 389th in the Fortune Global 500; in 2020, it became ineligible for the list. Johnson Controls was founded in 1885 by Warren S. Johnson, a professor at the State Normal School in Whitewater, Wisconsin. Originally called the Johnson Electric Service Company, it focused on automatic temperature regulation. In 1974, the company changed its name to Johnson Controls.
Learn more about Johnson Controls
Size
101,000 employees
Market Cap
$44.1 billion
Industry
Net Income
$923 million
Founded
1885
5 Year Trend
+2.1%
Revenue
$22 billion
NASDAQ

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