Jacobs
Senior Mechanical Engineer / Transient Thermal Simulation Technologist
Jacobs, Chicago, Illinois, United States, 60290
Senior Mechanical Engineer / Transient Thermal Simulation Technologist
At Jacobs, we’re challenging today to reinvent tomorrow by solving the world’s most critical problems for thriving cities, resilient environments, mission‑critical outcomes, operational advancement, scientific discovery and cutting‑edge manufacturing, turning abstract ideas into realities that transform the world for good.
The energy industry is undergoing rapid and dramatic changes, transforming the utility landscape to enhance reliability and sustainability. If you are seeking a meaningful career in the Energy sector, this may be the perfect fit for you!
Key Responsibilities
Provide consulting, advisory, conceptualization and design of data center cooling systems, district heating & cooling, thermal energy storage, and geothermal resources.
Collaborate with mechanical, energy, and geothermal engineering teams across North America.
Develop digital twin models for thermal energy assets and AI data center cooling systems.
Perform piping and equipment sizing and selection, flow modeling, energy analysis, and life‑cycle cost evaluations.
Conduct thermodynamic, technology, market, and economic analysis, focusing on data center cooling and power generation infrastructure.
Support industrial process applications, water conservation goals, Scope 1 and Scope 2 emissions analysis.
Design thermal energy networks and low‑ or no‑emissions energy systems in cooperation with multidisciplinary engineering teams.
Collaborate with technical leadership, operations, client account managers, and sales professionals on strategic pursuits.
Promote advanced transient simulation methods and tools for existing multi‑sector clients.
Required Qualifications
Bachelor’s or Advanced Degree in Mechanical Engineering or related discipline.
Professional Engineer (PE) license, or Engineer‑in‑Training (EIT) with ability to obtain a PE license.
At least 15 years of related design/consulting experience (or 14 years with a Master’s, or 10 years with a PhD).
Demonstrated ability in thermal energy systems modeling, techno‑economic evaluations, and thermal energy storage investigations.
Industry experience with data center cooling systems.
Experience with transient and complex system simulation programs such as Modelica, TRNSYS, Simulink, and Aspen Plus.
Experience authoring differential algebraic equation (DAE) models.
Co‑simulation experience using Functional Mock‑Up Interfaces (FMI) or similar frameworks.
Experience optimizing high‑dimensional stiff models; developing reduced‑order models and using advanced optimizers (e.g., CasADi, IPOPT).
Physics‑based whole‑building energy model development experience.
Familiarity with Python, R, or Julia.
Project and team management experience.
Strong communication and technical‑writing skills.
Preferred Qualifications
Familiarity with dynamic simulation models for data centers, district energy, HVAC control systems.
Experience with data center facility and technical loop cooling systems for co‑located, hyperscale, and AI data centers.
Knowledge of U.S. and international district energy systems.
Geothermal systems experience (geothermal power, direct use, geo‑exchange district energy). Knowledge of DOE geothermal research trends and funding mechanisms.
Benefits Our health and welfare benefits are designed to invest in you, your health, well‑being, security, and future. Employees have access to medical, dental, vision, and basic life insurance, a 401(k) plan, and the ability to purchase company stock at a discount. Eligible employees may also enroll in a deferred compensation plan or the Executive Deferral Plan. Jacobs has an unlimited U.S. Personalized Paid Time Off (PPTO) policy for full‑time salaried/exempt employees, seven paid holidays, one floating holiday, and caregiver leave. Certain roles may be eligible for merit increases, performance discretionary bonuses, and stock.
Base Pay Range $132,900.00 /yr – $232,600.00 /yr
Seniority Level Not Applicable
Employment Type Full‑time
Job Function Engineering and Information Technology
All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status.
Job posted on November 21, 2025. This position will be open for at least 3 days.
We value collaboration and believe that in‑person interactions are crucial for both our culture and client delivery. We empower employees with our hybrid working policy, allowing them to split their work week between Jacobs offices/projects and remote locations enabling them to deliver their best work.
Your application experience is important to us, and we’re keen to adapt to make every interaction even better. If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team via Careers Support.
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The energy industry is undergoing rapid and dramatic changes, transforming the utility landscape to enhance reliability and sustainability. If you are seeking a meaningful career in the Energy sector, this may be the perfect fit for you!
Key Responsibilities
Provide consulting, advisory, conceptualization and design of data center cooling systems, district heating & cooling, thermal energy storage, and geothermal resources.
Collaborate with mechanical, energy, and geothermal engineering teams across North America.
Develop digital twin models for thermal energy assets and AI data center cooling systems.
Perform piping and equipment sizing and selection, flow modeling, energy analysis, and life‑cycle cost evaluations.
Conduct thermodynamic, technology, market, and economic analysis, focusing on data center cooling and power generation infrastructure.
Support industrial process applications, water conservation goals, Scope 1 and Scope 2 emissions analysis.
Design thermal energy networks and low‑ or no‑emissions energy systems in cooperation with multidisciplinary engineering teams.
Collaborate with technical leadership, operations, client account managers, and sales professionals on strategic pursuits.
Promote advanced transient simulation methods and tools for existing multi‑sector clients.
Required Qualifications
Bachelor’s or Advanced Degree in Mechanical Engineering or related discipline.
Professional Engineer (PE) license, or Engineer‑in‑Training (EIT) with ability to obtain a PE license.
At least 15 years of related design/consulting experience (or 14 years with a Master’s, or 10 years with a PhD).
Demonstrated ability in thermal energy systems modeling, techno‑economic evaluations, and thermal energy storage investigations.
Industry experience with data center cooling systems.
Experience with transient and complex system simulation programs such as Modelica, TRNSYS, Simulink, and Aspen Plus.
Experience authoring differential algebraic equation (DAE) models.
Co‑simulation experience using Functional Mock‑Up Interfaces (FMI) or similar frameworks.
Experience optimizing high‑dimensional stiff models; developing reduced‑order models and using advanced optimizers (e.g., CasADi, IPOPT).
Physics‑based whole‑building energy model development experience.
Familiarity with Python, R, or Julia.
Project and team management experience.
Strong communication and technical‑writing skills.
Preferred Qualifications
Familiarity with dynamic simulation models for data centers, district energy, HVAC control systems.
Experience with data center facility and technical loop cooling systems for co‑located, hyperscale, and AI data centers.
Knowledge of U.S. and international district energy systems.
Geothermal systems experience (geothermal power, direct use, geo‑exchange district energy). Knowledge of DOE geothermal research trends and funding mechanisms.
Benefits Our health and welfare benefits are designed to invest in you, your health, well‑being, security, and future. Employees have access to medical, dental, vision, and basic life insurance, a 401(k) plan, and the ability to purchase company stock at a discount. Eligible employees may also enroll in a deferred compensation plan or the Executive Deferral Plan. Jacobs has an unlimited U.S. Personalized Paid Time Off (PPTO) policy for full‑time salaried/exempt employees, seven paid holidays, one floating holiday, and caregiver leave. Certain roles may be eligible for merit increases, performance discretionary bonuses, and stock.
Base Pay Range $132,900.00 /yr – $232,600.00 /yr
Seniority Level Not Applicable
Employment Type Full‑time
Job Function Engineering and Information Technology
All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status.
Job posted on November 21, 2025. This position will be open for at least 3 days.
We value collaboration and believe that in‑person interactions are crucial for both our culture and client delivery. We empower employees with our hybrid working policy, allowing them to split their work week between Jacobs offices/projects and remote locations enabling them to deliver their best work.
Your application experience is important to us, and we’re keen to adapt to make every interaction even better. If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team via Careers Support.
#J-18808-Ljbffr