Thermofluids Engineer

Thermofluids Engineer$140,000 - $180,000 + Relocation Support + Medical, Dental, Vision + PTO + 401k + Excellent BenefitsAustin, TX (On-site)Are you a Thermofluids Engineer who enjoys solving real-world engineering problems and applying strong fundamentals to the design of complex systems?This is an exciting opportunity to join a fast-growing, well-funded U.S. start-up where your work will directly contribute to the development of next-generation nuclear technology.The company is scaling rapidly with a mission to transform how nuclear energy systems are designed and delivered. They offer a hands-on, collaborative environment where strong engineering thinking and practical problem-solving are valued over process-heavy or purely theoretical approaches.You’ll be part of a highly technical team where engineers are given ownership, autonomy, and the chance to see their work move from concept through to testing and deployment.This role is best suited to a Thermofluids Engineer with strong fundamentals in heat transfer and fluid mechanics, who is confident performing detailed hand calculations and enjoys applying engineering principles to real hardware challenges.The Role:Lead thermal-fluid design, modelling, and system-level analysisPerform detailed hand calculations and first-principles engineering analysisSupport prototype development, testing, and rapid design iterationsWork closely with multidisciplinary engineering teams across design and build phasesThe Person:Thermofluids / Heat Transfer / Fluid Mechanics backgroundConfident with hand calculations and first-principles engineeringCFD experience (ANSYS Fluent, STAR-CCM+, OpenFOAM etc.) beneficial but not essentialPractical, hands-on engineering mindset with a focus on real-world applicationComfortable in a fast-paced, high-accountability start-up environmentU.S. Citizen or Green Card Holder required