Principal Mechanical Engineer (AI Infrastructure)

Location: Shanghai, China

Company

hirify.global provides rack-scale AI infrastructure through connectivity solutions integrating CXL, Ethernet, NVLink, PCIe, UALink, and the COSMOS software suite.

What you will do

• Architect and lead the mechanical design of high-speed paddle cards, including form factors, connector placement, stiffeners, brackets, and board-level integration.
• Drive thermal and mechanical analysis covering heatsinks, airflow, tolerance stack-ups, and reliable operation across customer platforms.
• Design and qualify manufacturing test fixtures, handlers, and sockets for high-speed production testing.
• Define manufacturing test strategy and mechanical requirements with Test, Product Engineering, Operations, contract manufacturers, and test houses.
• Own DFM, DFA, and DFT reviews, validation plans, root-cause analysis, corrective actions, and customer-facing design reviews.
• Mentor engineers, establish mechanical design and documentation best practices, and support product ramp.

Requirements

• Bachelor’s degree in Mechanical Engineering or a related field.
• 10+ years of mechanical engineering experience in electronic hardware, including high-speed boards, add-in cards, or server and networking systems.
• Hands-on experience designing PCB-based assemblies, connectors, and mechanical enclosures or brackets with 3D CAD tools such as SolidWorks or Creo.
• Experience developing manufacturing test fixtures or tooling and supporting product ramp with contract manufacturers.
• Proficiency in tolerance analysis, GD&T, and thermal and mechanical simulation.
• Strong written and verbal communication skills, with the ability to lead cross-functional work independently.

Culture & Benefits

• Work in a fast-moving, high-impact environment focused on rack-scale AI infrastructure.
• Collaborate with silicon, PCB, signal integrity, test, product engineering, operations, and external manufacturing teams.
• Contribute to hardware deployed by hyperscale customers at production scale.
• hirify.global encourages applications from people with diverse backgrounds and experiences.