Rack Systems Architect & Tech Lead for AI Data Centers

Fluidstack; San Francisco (CA); On-site; USD 208,000 - 263,000; Full time

Job summary

Fluidstack is building civilization-scale infrastructure for AI. We seek a senior architect to own the rack as a product for 150kW-class deployments, defining power budgets, cooling, interconnect, and serviceability, and to lead EE, ME, and thermal engineers.

You will write boundary interfaces, drive design reviews, align with accelerator vendors, and push a 70-person team to deliver reliable, scalable racks that meet aggressive performance and safety standards.

Qualifications

• 10+ years in system architecture of rack-scale compute at a hyperscaler, NVIDIA-ecosystem ODM, or AI systems company.
• Owned a rack as a product end to end: power budget, cooling, interconnect, weight, serviceability.
• Shipped dense liquid-cooled rack-scale products, NVL-class or equivalent.
• Led EE, ME, and thermal engineers who executed architecture.
• Wrote interface control documents enabling boundary movement.
• Defensible view on copper vs optics for scale-up interconnect at 200G+ per lane.

Responsibilities

• Own the rack as a product for 150kW-class deployments: architecture, power budget, cooling, interconnect topology, structure, and serviceability.
• Write and hold interface control documents between rack and facility.
• Lead the rack EE, ME, thermal, and integration engineers.
• Run design reviews to catch faults early.
• Align the rack roadmap with accelerator vendors and Fluidstack facility architecture.

Skills

Rack-scale architecture

End-to-end rack ownership

Dense liquid-cooled racks

Leadership of EE/ME/thermal

Interface control documents

Copper vs optics interconnect

NVL-class programs (bonus)

Job description

Fluidstack is building civilization-scale infrastructure for AI. We seek a senior architect to own the rack as a product for 150kW-class deployments, defining power budgets, cooling, interconnect, and serviceability, and to lead EE, ME, and thermal engineers.

You will write boundary interfaces, drive design reviews, align with accelerator vendors, and push a 70-person team to deliver reliable, scalable racks that meet aggressive performance and safety standards.