Thermal Systems Engineer II

What you will do Johnson Controls is seeking a Senior Thermal Data Center Systems Engineer to support the thermal subsystem or component designs within the data center cooling product portfolio. In this role, you will operate with minimal supervision, determining approaches to thermal solutions and leading small technical efforts. You will demonstrate proficiency across multiple thermal domains and understands the complete thermal chain from server to ambient. This position is based onsite, minimum 3 days per week, at our Advanced Technology and Innovation Center located in New Freedom, PA. Candidates must be commuting distance to the facility or able to relocate. How you will do it Own thermal subsystem or component designs for data center cooling products (dry coolers, remote condensers, CDUs, cold plate systems) • Define specifications for thermal features or products; develop test protocols and acceptance criteria • Lead prototype development and validation activities; develop and execute comprehensive test plans • Integrate multiple components into subsystem solutions understanding the complete thermal chain • Participate in process improvement for testing and analysis methods • Guide and mentor less experienced engineers; represent Engineering in cross-functional activities What you will need Required Bachelor of Science in Mechanical Engineering or related field required 2+ years of thermal/HVAC design experience Microsoft 365/Excel (including basic macros/VBA for data analysis and reporting) CAD proficiency (SolidWorks, Creo, or equivalent) Engineering calculations and documentation (MathCAD, EES, or equivalent) Heat transfer analysis (conduction, convection, two-phase) Thermodynamic cycle analysis Fluid mechanics and hydraulic system design Thermal system component sizing and selection Product development lifecycle experience Prototype fabrication and hands-on testing Cross-functional project execution Preferred 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) 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. Johnson Controls: Enhancing the Intelligence of Buildings Your buildings have a purpose. They are places for people to live or work. Facilities for learning or healing. Venues for entertainment and shopping. Sites for the specialized storage of tangible goods or mission-critical data. Your buildings have a huge variety of functions; they are central to your mission. This is where Johnson Controls comes in, helping drive the outcomes that matter most. Through a full range of systems and digital solutions, we make your buildings smarter. A smarter building is safer, more comfortable, more efficient, and, ultimately, more sustainable. Most important, smarter buildings let you focus more intensely on your unique mission. Better for your people. Better for your bottom line. Better for the planet. At Johnson Controls, we’ve been making buildings smarter since 1885, and our capabilities, depth of innovation experience, and global reach have been growing ever since. Today, we offer the world’s largest portfolio of building products, technologies, software, and services; we put that portfolio to work to transform the environments where people live, work, learn and play.