Senior Thermal Engineer, Expeditionary AI / HPC Data Centers

Job description

Job responsibilities

• Own the thermal design and analysis of deployable data center cooling systems—air-side and water-side cooling, heat rejection, chilled water plant, and liquid cooling—from rack and chip level up through the full…
• Use first principles to discern the right level of analysis, running hand calcs, spreadsheets, and MATLAB/Python first-order models before detailed design.
• Define cooling architecture and heat-rejection strategy—CRAH/CRAC, air-side economization, chilled water plants, dry coolers, CDUs, rear-door heat exchangers, and direct-to-chip and immersion liquid cooling—to keep…
• Develop cooling approaches for high-density racks and trade off air, liquid, and hybrid cooling for modular, transportable systems in austere, high-ambient environments.
• Work with electrical, mechanical, and facilities engineers to characterize IT and equipment heat loads across operating and failure modes.
• Weigh cooling architectures against reliability, efficiency (PUE/WUE), and total cost, driving trade studies that balance thermal margin with capital and operating cost.
• Own the thermal FEA/CFD and system models, predict facility performance, and set red/yellow limits for commissioning and operation.
• Lead prototype builds, field testing, commissioning, and operational validation of cooling designs (CAD, sensor and DAQ selection, data post-processing, results).

Job requirements

• MS or higher in mechanical engineering, applied physics, or related field focused on heat transfer, fluid dynamics, and HVAC
• In-depth understanding of heat transfer and fluid dynamics
• 5+ years designing thermal management systems for data centers or comparable mission-critical infrastructure
• Full-spectrum data center thermal experience—air-side and water-side cooling, heat rejection, chilled water plant design, power density management, and liquid cooling
• Steady-state and transient system modeling of thermal management systems, including HVAC and refrigerant simulations
• Validating and testing data center thermal equipment, with knowledge of applicable operating standards
• Track record of staying abreast of the latest data center thermal management technologies
• CAD experience with Siemens NX or SolidWorks