Principal Thermal Systems Product Engineer (onsite)

Plan and execute complex thermal product development projects and product releases; own full thermal system designs from concept through production launches and manage engineering changes in SAP across global factories

Serve as the primary technical interface between research/advanced development teams and design engineering, translating research findings into actionable product development plans

Work closely with the design and manufacturing teams in generating layout concepts and system configurations that consider the best balance of cost, performance, and reliability

Define specifications for complete thermal systems including multi-domain requirements (thermal, controls, electrical) and manufacturing constraints

Own PDP deliverables (DFMEA, PFMEA, Control Plans) and lead validation test programs

Lead process improvement initiatives across thermal product development domains

May supervise a team of 2-5 engineers plus technicians on thermal system product development projects

Resolve escalated production and field issues through root cause and corrective action

Secure and maintain agency approvals (UL, CE/PED, ASME, and regional standards)

What you will need

Minimum Bachelor's degree in Mechanical Engineering, or similar discipline

CAD proficiency (SolidWorks, Creo, or equivalent)

Engineering calculations and documentation (MathCAD, EES, or equivalent)

4+ years of professional experience with heat transfer analysis (conduction, convection, two-phase), thermodynamic cycle analysis, fluid mechanics, hydraulic system design, and thermal system component sizing and selection

4+ years of experience within the commercial HVAC industry; preferably chillers

4+ years experience with released thermal products or systems

Python scripting and environment management (package installation, virtual environments, basic automation)

CFD (ANSYS Fluent, Star-CCM+, OpenFOAM, or equivalent)

FEA (ANSYS Mechanical, Abaqus, or equivalent)

MATLAB/Simulink for system modeling and controls

Controls fundamentals (feedback loops, PID tuning, system response)

Electrical systems basics (motor sizing, VFDs, power distribution)

Refrigeration system design and refrigerant properties

Data center cooling architectures (direct liquid cooling, rear-door heat exchangers, CDUs)

HIRING 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 https://jobs.johnsoncontrols.com/about-us

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Johnson Controls International plc. is an equal employment opportunity and affirmative action employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, protected veteran status, genetic information, sexual orientation, gender identity, status as a qualified individual with a disability or any other characteristic protected by law. To view more information about your equal opportunity and non-discrimination rights as a candidate, visit EEO is the Law. If you are an individual with a disability and you require an accommodation during the application process, please visit here.