# Senior Thermal Engineer, Expeditionary AI / HPC Data Centers

**Company**: Anduril
**Location**: Seattle, Washington
**Experience**: senior
**Job type**: full-time
**Salary**: $146,000-$194,000 USD
**Category**: Engineering
**Industry**: Technology

**Apply**: https://job-boards.greenhouse.io/andurilindustries/jobs/5243039007?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_8ef2f04e-585

## Description

The Thermal Engineering team's work is essential to support Anduril's rapid innovation cycle and maintain the performance and reliability of advanced defense technologies.

We are looking for a Senior Thermal Engineer to own the thermal management of expeditionary AI/HPC data centers,air-transportable, modular compute and command-and-control infrastructure built to run at forward operating locations.

### 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 facility.

- 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 equipment within limits as power density scales.

- 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).

- Present thermal status at internal and customer reviews with a clear view of timelines and technical status.

- Develop internal tools to improve analysis effectiveness and efficiency.

- Support failure reviews and root-cause analysis with test data and thermal analysis.

### Required Qualifications

- 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

### Preferred Qualifications

- Coding in Python or MATLAB for applications such as lumped-capacitance steady-state and transient analysis

- Thermal FEA/CFD experience,STAR-CCM+, ANSYS, Icepak or FloEFD

- Familiarity with efficiency metrics (PUE/WUE) and thermal design for high-density AI/HPC compute

- Experience with modular, transportable, or ruggedized data centers and operation in austere, high-ambient environments

- Be able to obtain and hold a U.S. Secret security clearance

### Benefits

Anduril offers a comprehensive, competitive benefits package, including top-tier benefits for full-time employees.

## Skills

### Required
- heat transfer
- fluid dynamics
- HVAC
- thermal management systems
- data center thermal experience
- steady-state and transient system modeling
- thermal FEA/CFD
- CAD

### Nice to have
- Python
- MATLAB
- STAR-CCM+
- ANSYS
- Icepak
- FloEFD
- efficiency metrics
- thermal design for high-density AI/HPC compute

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