Mechanical Principal Engineer – AI TechnologiesThermal / Mechanical Engineering leads and delivers the development of innovative and compliant mechanical design solutions, as well as cross-functional interfaces for datacenter and server computer systems and peripherals.Our team conducts the analysis, feasibility studies and testing of mechanical products, instruments, subassemblies and packaging for new and existing products – and then oversees the introduction of design changes to the manufacturing organizations.Join us to do the best work of your career and make a profound social impact as a Mechanical Principal Engineer on our Mechanical Engineering Team in Austin, Texas.What you'll achieveThis role is critical to enabling next-generation AI and high-density computing by ensuring reliable, efficient, and scalable thermal solutions. You will directly influence customer success and shape the future of data center cooling technologies. We are seeking a highly skilled Mechanical / Thermal Engineer specializing in Direct Liquid Cooling (DLC) to support customer-facing deployments of advanced data center infrastructure. This role bridges engineering design, system integration, and customer engagement, ensuring optimal thermal performance and reliability of high-density compute platforms. The ideal candidate will work directly with customers, internal engineering teams, and partners to deliver innovative cooling solutions at scale.You will:- Serve as the technical subject matter expert (SME) for mechanical and thermal systems, with a focus on DLC technologies in customer environments- Lead customer engagements, including designfluence product design by incorporating customer feedback and field learnings into next-generation solutions- Analyze and optimize thermal performance of racks, servers, and cooling distribution units (CDUs) under real-world operating conditions; develop and present technical documentation, whitepapers, and customer-facing materials- Support installation, commissioning, and troubleshooting of DLC systems, including manifolds, cold plates, and facility integration; provide