Principal Simulation & Modeling Engineer (hybrid)

What you will doJohnson Controls is hiring! We're seeking a Principal Simulation & Modeling Engineer that will perform computer modeling and simulation of Chiller Solutions components and systems. In this role, you will be responsible for developing and applying numerical models to simulate components and systems with the objective of predicting component and system performance accurately and efficiently.  This position requires an understanding of the fundamentals of thermodynamics, fluid dynamics, heat and mass transfer and experience in object-oriented computer programming and simulation methods for components used in chiller products and systems.This position is onsite, based in New Freedom, PA. Candidates must be commuting distance to the office, or able to relocate. Johnson Controls offer various relocation packages depending on your needs.How you will do itWorking with minimal direction, develops and applies computer program models to simulate chiller components and systems. Develops component models and applies component models developed by others.Develops steady-state and multifaceted simulation models of thermal components and systems based on first principles and test dataParticipates as a member of a project team to ensure projects are completed according to schedule.Collects, analyzes and interprets test data. Analyzes product performance and adjusts models as appropriate.Provides models that can be used for product design and optimization.Provides direction to personnel in the establishment of chiller design choices and system trade-offsProvides mentorship on rating and analysis tool development.Develops innovative ideas to improve product performance and reduce cost.What we look forBachelor’s degree in Mechanical Engineering4 years of experience in fluid mechanics, thermodynamics, heat and mass transferProgramming experience with a compiled software language (C# preferred, C++, C, Fortran)Experience with testing and evaluation of results in an engineering laboratory environmentExperience with object-oriented programming (C# preferred, python, Modelica, object-oriented C++)PreferredMachine Learning experienceHIRING SALARY RANGE: $100,000 - $130,000 (Salary to be determined by the education, experience, knowledge, skills, and abilities of the applicant, internal equity, and alignment with market data.) This role offers a competitive Bonus plan that will take into account individual, group, and corporate performance. 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, please visit the About Us tab on the Johnson Controls Careers site at 

Created: 2026-05-04