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Thermal Engineer, Mission Electronics

Anduril - Costa Mesa, CA, United States - In-office - posted 2026-09-25

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Salary: USD 129,000 - 171,000 / annual

Anduril Industries is a defense technology company transforming U.S. and allied military capabilities through advanced technology. The Thermal Engineering team enables rapid hardware development by ensuring advanced defense systems perform reliably in demanding real-world environments. In this role, you will own the thermal design and analysis of electronics across a diverse product portfolio spanning air vehicles (fixed-wing and rotorcraft), maritime and ground systems, and wearables/body-worn devices. You will bring deep expertise in heat transfer and fluid dynamics to hardware that must survive operational environments. Key responsibilities include: - Own thermal design and analysis of electronics from board and component level through enclosures and full assemblies - Use first-principles analysis and execute hand calculations, spreadsheets, and MATLAB/Python models to inform design decisions - Define thermal architecture and heat-rejection paths (conduction, natural/forced convection, cold plates, heat sinks, heat pipes, thermal interface materials, coatings) to keep components within temperature limits - Establish hot, cold, and edge-case operating conditions based on industry standards and intended use, accounting for altitude/flight envelopes, salt fog/humidity, solar load, and human-contact limits - Collaborate with electrical, mechanical, and systems engineers to characterize component power dissipation - Communicate thermal trade-offs and drive studies balancing thermal margin against size, weight, and power - Own thermal FEA/CFD models and define red/yellow design limits for test and operation - Define and execute prototype builds and thermal tests (CAD, sensor selection, DAQ, data post-processing) - Present thermal status at formal reviews internally and with customers - Develop internal tools to improve analysis effectiveness and efficiency - Support failure reviews and root-cause analysis REQUIREMENTS: - MS or higher degree in mechanical engineering, aerospace engineering, applied physics, or related field with focus on heat transfer and fluid dynamics (BS with additional experience considered) - In-depth understanding of heat transfer and fluid dynamics fundamentals - 2–4 years of experience in thermal design, analysis, or testing for electronics or integrated hardware products (graduate research with hands-on experimental work counts) - Familiarity with electronics cooling concepts: component and board-level thermal management, TIMs, heat sinks, heat pipes, cold plates, enclosure heat rejection - Exposure to thermal testing: sensor selection, data acquisition, data post-processing - Experience with at least one thermal FEA/CFD tool (STAR-CCM+, ANSYS, Icepak, FloEFD, COMSOL) - CAD experience with Siemens NX, SolidWorks, or equivalent - Passion for defending the United States and allies - Ability to obtain and hold U.S. Top Secret security clearance PREFERRED QUALIFICATIONS: - Experience developing code in Python or MATLAB for thermal analysis (lumped-capacitance models, transient analysis, data post-processing) - Exposure to thermal design across multiple product classes (air vehicles, maritime/ground systems, electronics enclosures, wearable/body-worn devices) - Familiarity with defense/aerospace environmental standards (e.g., MIL-STD-810) or thermal derating of electronic components - Exposure to active cooling approaches (fans, TECs, liquid cooling, two-phase systems) - Experience with thermal architecture trade studies balancing thermal margin against SWaP constraints

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