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About the Role
Johnson Controls is seeking a Principal Thermal Systems Engineer to shape the future of data center cooling technology. You will own the complete product lifecycle for next-generation thermal systems, from concept development through global production launch and sustainment. This highly visible role involves collaborating with global cross-functional teams to transform customer needs and emerging technologies into innovative, certified, and manufacturable solutions.
Responsibilities
- Plan and execute complex thermal product development projects and product releases.
- Own full thermal system designs from concept through production launches.
- Manage engineering changes in SAP across global factories.
- Serve as the primary technical interface between research/advanced development teams and design engineering.
- Translate research findings into actionable product development plans.
- Work closely with design and manufacturing teams to generate layout concepts and system configurations.
- Define specifications for complete thermal systems including multi-domain requirements and manufacturing constraints.
- Own PDP deliverables (DFMEA, PFMEA, Control Plans).
- 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).
Requirements
- 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.
Skills
- 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).
Location
- New Freedom, PA
Work Type
- Onsite
Experience Level
- 4+ years of professional experience
- 4+ years of experience within the commercial HVAC industry
- 4+ years experience with released thermal products or systems
Education Level
- Bachelor's degree in Mechanical Engineering, or similar discipline
Salary/Compensations
- $110,000 - $140,000
Benefits
- Competitive Bonus plan
- Competitive benefits package
- Competitive relocation assistance packages
About the Company
- Johnson Controls is a global leader in thermal management, mission-critical building systems, energy efficiency, and decarbonization.
- Helps customers use energy more productively, reduce carbon emissions, and operate with the precision and resilience required in rapidly expanding industries such as data centers, healthcare, pharmaceuticals, advanced manufacturing, and higher education.
- For more than 140 years, Johnson Controls has delivered performance where it really matters.
- Backed by advanced technology, lifecycle services and an industry-leading field organization, we elevate customer performance, turn goals into real-world results and help move society forward.
Equal Opportunity
- 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.