Lead Mechanical Engineer

Giga Energy is focused on manufacturing data centers to support the AI ramp, employing a product-based approach for high-performance infrastructure. As Lead Mechanical Engineer, you will own the mechanical design of next-generation facilities, setting standards for high-density AI cooling and ensuring compliance with global standards.

Responsibilities:

• Develop and maintain the mechanical POR for Giga Data Centers, defining the "Gold Standard" design that enables manufacturing of reliability and efficiency at scale
• Author and own the internal engineering library including technical specifications and Basis of Design documents, deciding what we build and how we measure it
• Design to global and local standards, leveraging ASHRAE TC 9.9 to define environmental envelopes for AI hardware and ensuring compliance with ASHRAE 90.1 for energy efficiency
• Guide external engineering firms to localize designs while maintaining strict adherence to core performance intent and standardization requirements
• Validate airflow patterns and rack-level thermal performance using computational fluid dynamics, ensuring compliance with ASHRAE thermal guidelines for Class A1-A4 environments
• Execute rigorous hydraulic analysis and thermal load flow studies, conducting pipe stress analysis per ASME B31 standards to ensure system integrity under thermal expansion and seismic events
• Engineer complex cooling loops (Direct-to-Chip, Immersion, RDHx) aligned with OCP (Open Compute Project) specifications for liquid cooling interoperability
• Select and specify pumps, fans, chillers, dry coolers, and control valves for high-density compute environments
• Create detailed Bills of Material (BOMs), Quantity Take Offs (QTOs), and Commissioning scripts to support a manufacturing-first supply chain
• Develop Sequence of Operations (SOO) and Control Narratives that dictate how mechanical systems respond to dynamic AI load changes
• Use advanced simulation tools to optimize thermal performance and validate designs before manufacturing

Requirements:

• Professional Engineer (PE) license required
• Bachelor's or Master's degree in Mechanical Engineering
• 7+ years of mechanical engineering experience with strong focus on mission-critical or industrial facilities
• Deep working knowledge of ASHRAE TC 9.9 (Thermal Guidelines for Data Processing Environments)
• Familiarity with ASME B31.3/B31.9 (Process Piping) for liquid cooling loops
• Strong background in CFD analysis using tools like 6Sigma or Ansys
• Experience with pipe stress analysis software (Caesar II or AutoPIPE)
• Proficiency in Revit/AutoCAD for mechanical design
• Experience with hydraulic modeling software (AFT Fathom or Pipe-Flo)
• Proven ability to create engineering standards from scratch rather than just following existing ones
• Strong understanding of high-density cooling solutions and thermal management
• Experience specifying HVAC equipment including chillers, pumps, and cooling towers
• Track record developing standardized designs for scalable deployment
• Understanding of OCP (Open Compute Project) cooling initiatives and specifications
• Experience with liquid cooling technologies (Direct-to-Chip, Immersion, RDHx)
• Background in data center or high-density compute facility mechanical design
• Knowledge of ASHRAE 90.1 energy efficiency requirements
• Experience with manufacturing-first design approach (DfMA principles)
• Startup or high-growth company experience
• Track record creating Plans of Record for manufactured products
• Experience managing A&E firms and maintaining design standards across partners
• Familiarity with commissioning processes and functional testing for mechanical systems
• Understanding of AI infrastructure thermal requirements and challenges
• Experience with design-build or fast-track project delivery