Partner deeply with responsible engineers, thermal architects, and rack mechanical teams to co-define commodity strategy, multi-year technology roadmaps, and approved vendor lists for rack-level cooling and mechanicals — OCP / 21" and 19" rack frames and cabinets, doors and side panels, seismic and leveling kits, cable-management arms and blanking, rear-door heat exchangers (RDHx), in-rack manifolds and plumbing, drip pans and leak containment, rack-mounted CDUs where in-scope, in-rack fans and containment, dripless quick disconnects at the rack, PDU and busbar mounting hardware, and structural fasteners — anticipating SpaceXAI density and deployment requirements 12–24 months ahead. Own global sourcing end-to-end for rack cooling and mechanicals, including supplier selection, qualification of sheet-metal / weldment / liquid-cooling fabricators, dual/multi-sourcing, capacity reservation, and performance governance to achieve on-time delivery and continuous lead-time compression while supporting SpaceX's aggressive cluster build cadence.