{"id":546000,"url":"https://alion.io/job/johnsoncontrols-thermal-systems-engineer-ii","title":"Thermal Systems Engineer II","company":{"id":448321,"name":"Johnson Controls","domain":"johnsoncontrols.com","url":"https://alion.io/company/johnsoncontrols-3","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":79,"open_postings":517,"ghost_share":0.002,"stale_share":0.822,"repost_share":0.012,"time_to_fill_p50_days":32,"computed_at":"2026-11-15T07:52:55Z"}},"role":"Data Science","role_family":"Data Science","seniority":"middle","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["New Freedom, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":86000,"max_usd":164000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":530},"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"MATLAB","optional":false},{"name":"Python","optional":false},{"name":"Simulink","optional":false},{"name":"SolidWorks","optional":false}],"status":"live","first_seen_at":"2026-01-20T00:00:00Z","employer_posted_date":"2026-01-20","last_verified_at":"2026-11-15T00:27:07Z","board_verified":true,"closed_at":null,"days_open":299,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":298},"description":"What you will do\nJohnson 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.\nHow you will do it\nOwn thermal subsystem or component designs for data center cooling products (dry coolers, remote condensers, CDUs, cold plate systems)\nDefine specifications for thermal features or products; develop test protocols and acceptance criteria\nLead prototype development and validation activities; develop and execute comprehensive test plans\nIntegrate multiple components into subsystem solutions understanding the complete thermal chain\nParticipate in process improvement for testing and analysis methods\nGuide and mentor less experienced engineers; represent Engineering in cross-functional activities\nWhat you will need\nRequired\nBachelor of Science in Mechanical Engineering or related field required\n2+ years of thermal/HVAC design experience\nMicrosoft 365/Excel (including basic macros/VBA for data analysis and reporting)\nCAD proficiency (SolidWorks, Creo, or equivalent)\nEngineering calculations and documentation (MathCAD, EES, or equivalent)\nHeat transfer analysis (conduction, convection, two-phase)\nThermodynamic cycle analysis\nFluid mechanics and hydraulic system design\nThermal system component sizing and selection\nProduct development lifecycle experience\nPrototype fabrication and hands-on testing\nCross-functional project execution\nPreferred\nPython scripting and environment management (package installation, virtual environments, basic automation)\nCFD (ANSYS Fluent, Star-CCM+, OpenFOAM, or equivalent)\nFEA (ANSYS Mechanical, Abaqus, or equivalent)\nMATLAB/Simulink for system modeling and controls\nControls fundamentals (feedback loops, PID tuning, system response)\nElectrical systems basics (motor sizing, VFDs, power distribution)\nRefrigeration system design and refrigerant properties\nData center cooling architectures (direct liquid cooling, rear-door heat exchangers, CDUs)\nJohnson 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, visitEEO is the Law. 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