Principal Mechanical Engineer - Data Center Liquid Cooling Systems

Mitsubishi Heavy Industries America, Inc. (MHIA) is looking for a Principal Mechanical Engineer-Data Center Liquid Cooling Systems to join our team. This is a hybrid role based out of our Plano, Texas, location.

For over 130 years, Mitsubishi Heavy Industries (MHI) Group’s innovative and integrated solutions have demonstrated our commitment to creating a positive social impact around the globe. Our range of products and services is tailored to meet our customers’ evolving needs across the commercial aviation, energy, transportation and infrastructure, machinery, defense, and space systems sectors.

Our culture embraces diversity and cooperation, and we promote a healthy balance of professional and personal development, ensuring that your ideas and expertise are valued and respected.

The Principal Mechanical Engineer serves as a core technical leader for MHIA’s data center liquid cooling systems, with an initial focus on Coolant Distribution Units (CDUs). The role acts as the primary mechanical engineering authority across product design, customer technical engagement, supplier coordination, and service readiness, ensuring solutions are scalable, reliable, and manufacturable for U.S. deployment. This role bridges customer requirements (Hyperscalers), supplier engineering capabilities, and internal productization objectives, ensuring that CDU systems are technically sound, scalable, reliable, and commercially viable from concept through mass production and lifecycle support.

The position plays a critical role in accelerating CDU business growth in the U.S. by enabling robust product architectures, supplier‑ready designs, and customer‑aligned solutions. This position collaborates with global stakeholders across Japan and the U.S. to align priorities, enable effective execution, and support MHIA’s long‑term business objectives.

The ideal candidate will have at least twelve (12) years of experience, including at least seven (7) years of experience in mechanical system design and supplier‑facing technical leadership for industrial or packaged equipment such as pumps, heat exchangers, HVAC systems, skid‑mounted units, or thermal management systems.

• Serve as the technical authority for CDU mechanical system design, including pumps, heat exchangers, piping, valves, sensors, and skid/enclosure integration.
• Review and evaluate CDU mechanical designs, drawings, specifications, and calculations, providing clear technical feedback and approval direction.
• Lead product design activities across concept design, PoC, pilot builds, and mass‑production design, ensuring design‑for‑manufacturing and design‑for‑service principles.
• Technically assess and judge CDU design performance in terms of:
  • Redundancy and reliability concepts
  • Safety and compliance
  • Cont rollability and load‑following performance under dynamic AI workloads
  • Operability, maintainability, and durability
  • Compliance with internal and customer design requirements

• Act as a key technical interface with customers, leading and supporting technical discussions on CDU architecture, performance, and integration.
• Translate customer technical requirements into clear, actionable design inputs and specifications.
• Provide technically sound and flexible solution proposals aligned with customer operational and business needs.
• Capture Voice of Customer (VOC) and ensure systematic feedback into product design and roadmap decisions.
• Coordinate technical alignment between customers and suppliers, serving as the engineering bridge to resolve gaps and clarify responsibilities.
• Engage directly with Hyperscalers / GAFAM customers, supporting technical reviews, RFIs/RFPs, and design clarification processes.

• Evaluate supplier engineering capabilities, including:
  • Design maturity and technical depth
  • Quality control and inspection processes
  • Required certifications and compliance readiness
  • Mass‑production capability and scalability
• Collaborate with supply chain teams to assess inventory…