Johnson Controls

Transforming the buildings where people live, work, learn and play to become smarter, healthier and more sustainable.

Senior Modeling Engineer

EngineerEngineerFull TimeRemoteTeam 10,001+Since 1885H1B SponsorCompany SiteLinkedIn

Location

Pennsylvania + 1 moreAll locations: Pennsylvania, Wisconsin

Posted

1 day ago

Salary

Not specified

Postgraduate Degree3 yrs expEnglishPythonVBA

Job Description

• 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.

Job Requirements

  • Required 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.
  • Proficiency with Microsoft 365/Excel, including basic macros/VBA for data analysis and reporting.
  • Demonstrated ability to execute cross-functional projects.
  • Preferred 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).

Benefits

  • Johnson Controls International plc. is an equal employment opportunity and affirmative action employer
  • 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.
  • If you are an individual with a disability and you require an accommodation during the application process, please visit here.

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