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About the Role
Develop and apply numerical models to simulate the end-to-end performance of data center cooling systems. Play a key role on cross-functional teams creating comprehensive thermal solutions for data center applications, simulating system performance, and providing design and application guidance. Stay current on emerging technologies in the data center cooling space and evaluate innovations that may influence future product offerings.
Responsibilities
- Develop numerical simulations of thermal components commonly used in data center applications.
- Integrate subsystems into complete thermal solutions, coordinating across cooling loops, controls, and heat-rejection equipment.
- Use simulation tools to predict chip-to-ambient performance of data center cooling systems.
- Apply system-level performance models to provide technical guidance to customers.
- Present project status, technical findings, and strategic recommendations across departments.
- Deliver presentations and/or write white papers communicating JCI’s technical perspective on emerging technologies and system architectures.
- Actively participate in industry groups such as ASHRAE and the Open Compute Project.
Requirements
- Master’s or PhD in Mechanical Engineering or a related field.
- 10+ years of industry experience with thermal products or systems.
- Strong theoretical foundation in thermodynamics, heat transfer, and fluid mechanics.
- Experience with HVAC system design, refrigerant cycles, and component selection.
- Proficiency with numerical simulation tools for building and thermal applications (e.g., Modelica, MATLAB/Simulink, EES, EnergyPlus).
- Demonstrated ability to execute cross-functional projects.
- Python scripting and environment management (package installation, virtual environments, basic automation).
- Fundamentals of controls engineering (feedback loops, PID tuning, system response).
- Basic understanding of electrical systems (motor sizing, VFDs, power distribution).
- Experience with refrigeration system design and refrigerant properties.
- Familiarity with data center cooling architectures (direct liquid cooling, rear-door heat exchangers, CDUs).
- Expertise in one or more thermal domains (CDUs, chillers, dry coolers, cold‑plate systems).
- Broad cross-domain knowledge spanning thermal, controls, and electrical systems—generalists with strong multidomain capability.
Skills
- Thermodynamics
- Heat transfer
- Fluid mechanics
- HVAC system design
- Refrigerant cycles
- Component selection
- Numerical simulation tools
- Modelica
- MATLAB/Simulink
- EES
- EnergyPlus
- Python scripting
- Controls engineering
- Electrical systems
- Refrigeration system design
- Data center cooling architectures
Location
- Glendale, WI
- New Freedom, PA
- Boston, MA
- Remote
Work Type
- On-site
- Hybrid
- Remote
Experience Level
- 10+ years of industry experience
Education Level
- Master’s degree
- PhD
Salary/Compensations
- $120,000 - $170,000
Benefits
- Competitive Bonus plan
- Competitive benefits package
- Various relocation 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.