{"@context":"https://schema.org","@type":"JobPosting","title":"Thermal Systems Engineer","description":"

Thermal Systems Engineer
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\nLocation: Onsite, Lake Forest, CA
\nIndustry: Semiconductor Capital Equipment / Advanced Electronics
\nEmployment Type: Full-Time

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About the Role

\nJoin a global leader in semiconductor test and measurement solutions, known for enabling innovation across advanced electronics, automotive, and high-performance computing. This team operates at the intersection of precision engineering and cutting-edge technology, delivering highly specialized systems to top-tier customers worldwide.
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\nThis is a hands-on, high-impact role for a Thermal Systems Engineer who thrives in fast-paced environments and enjoys solving complex, multidisciplinary challenges. You’ll work across design, testing, and field support, contributing directly to the performance and reliability of thermal systems used in advanced electronic platforms.\n\n

What you’ll do in this impactful role

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Design and develop thermal components and active thermal control systems, partnering closely with cross-functional engineering teams
Perform thermal analysis, testing, and validation to ensure systems meet performance and reliability targets
Optimize designs for efficiency, cost, and performance across a range of applications (semiconductors, photonics, embedded systems)
Support prototype builds and conduct detailed performance evaluations, identifying risks and improvement opportunities
Collaborate with manufacturing, procurement, quality, and support teams to define specs and select vendors
Troubleshoot and resolve field issues, including occasional on-site support at customer locations
Document designs, test results, and system performance, while staying current with emerging thermal technologies

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What you need to succeed

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Strong foundation in thermal system design, testing, and integration
Experience with liquid and refrigerant-based cooling systems (chillers, condensing units)
Hands-on approach with the ability to move between design, lab work, and field support
Strong analytical and problem-solving skills, with the ability to synthesize complex data
Comfortable working cross-functionally on complex, integrated systems

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Preferred Experience

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Background in electronic packaging and thermal integration for automated systems
Experience with heaters, Peltiers, heatsinks, cryogenics, condensation control, or airflow optimization
Exposure to systems involving motion control, electrical, and software components
Familiarity with burn-in ovens or thermal solutions for automotive or defense applications
Experience with thermal simulation tools (e.g., SolidWorks Flow, Ansys Icepak)
3D CAD experience, ideally SolidWorks
Experience supporting semiconductor capital equipment environments

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Education / Experience

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Bachelor’s degree in Mechanical Engineering, Thermal Engineering, Physics, or related field required
Master’s degree preferred
5+ years of experience in a high-tech engineering environment (thermal design, testing, or support)
Ability to travel up to 20%

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