Note: The job is a remote job and is open to candidates in USA. Johnson Controls is seeking a Senior Modeling Engineer to join their Data Center Thermal Technology Solutions group. The role involves developing and applying numerical models to simulate the performance of data center cooling systems and providing design guidance based on these results.
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
Skills
- Master's or PhD in Mechanical Engineering or a related field
- 3+ 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)
- Broad cross-domain knowledge spanning thermal, controls, and electrical systems—generalists with strong multidomain capability are highly valued
- Proficiency with Microsoft 365/Excel, including basic macros/VBA for data analysis and reporting
- 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)
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