Simulation Engineer

Cooling performance limits high-power computing, semiconductor fab, cell networks, photonics, power electronics, and most of our digital world. JCI enables customers to overcome these constraints with novel, complex metal components that dramatically improve heat dissipation in high-performance systems. JCI’s patented Stack Forging™ process enables complex micro-geometries, resulting in single-piece, leak-tight parts that deliver superior cooling performance, lower pressure drops, and exceptional reliability.

This role generally requires 4 days onsite per week.

As a Simulation Engineer you will use hand calculations and computational tools to predict the performance of JCI's industry-leading thermal management components. You will work closely with JCI’s Solutions Engineers and Thermal Design Engineers on optimizing designs to meet challenging customer requirements. You will have the opportunity to help develop our simulation best practices and learn from our current simulation experts.

• Responsibilities are subject to change based on shifting business needs.
• Do 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.

• Bachelors in Mechanical Engineering, Aerospace Engineering, or other relevant field.
• 2–5 years of industry experience.
• Experience with Siemens Sim Center or similar (required).
• 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: $90,000 - $110,000. Salary will be determined by the education, experience, knowledge, skills, and abilities of the applicant, internal equity, and alignment with market data. This position includes a competitive benefits package. The posted salary range reflects the target compensation for this role. However, we recognize that exceptional candidates may bring unique skills and experiences that exceed the typical profile.

If you believe your background warrants consideration beyond the stated range, we encourage you to apply.

To support an efficient and fair hiring process, we may use technology assisted tools, including artificial intelligence (AI), to help identify and evaluate candidates. All hiring decisions are ultimately made by human reviewers. For details, visit the Johnson Controls Careers site at