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About the Role
Fluidstack is seeking a leader to own the rack as a product for 150kW-class liquid-cooled deployments. This role involves architecture, power budget, cooling, interconnect topology, structure, and serviceability, with explicit tradeoffs and documented decisions. You will write and manage interface control documents, lead engineering teams, and align the rack roadmap with accelerator vendors and facility architecture.
Responsibilities
- Own the rack as a product for 150kW-class liquid-cooled deployments: architecture, power budget, cooling, interconnect topology, structure, and serviceability.
- Make tradeoffs explicitly and defend them on the record.
- Write and hold the interface control documents between rack and facility.
- Ensure power, liquid, and network teams can move independently without breaking the boundary.
- Lead the rack EE, ME, thermal, and integration engineers.
- Own the architecture the team executes and the technical calls that unblock them.
- Run design reviews to catch design faults before they reach integration.
- Align the rack roadmap with accelerator vendors and Fluidstack's facility architecture.
Requirements
- 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 architecture, interconnect topology, weight, transport, and serviceability.
- Shipped dense liquid-cooled rack-scale products, NVL-class or equivalent.
- Led EE, ME, and thermal engineers who executed your architecture.
- Made tradeoffs on a shipping rack and handled the resulting pushback.
- Written interface control documents that allow independent movement on both sides of a boundary.
- Hold a defensible view on copper versus optics for scale-up interconnect at 200G+ per lane, and argue where the crossover sits.
Skills
- System architecture
- Rack-scale compute
- Power budget
- Cooling architecture
- Interconnect topology
- Liquid-cooled rack-scale products
- Interface control documents
- Copper vs. optics interconnect
- NVL-class rack programs
- Transport and seismic qualification
- Facility-side liquid cooling
- Accelerator vendor roadmaps
Location
- Remote
Work Type
- Full-time
Experience Level
- 10+ years
About the Company
- Fluidstack exists to make humanity more free by delivering compute infrastructure for AI faster than anyone else.
- We are singularly focused on delivering 10 to 100s of GWs of compute, rethinking every layer of the stack.
- We acquire power, design and build data centers, and operate them.
- Speed and scale are our key differentiators.
- We are building civilization-scale infrastructure for AI.
- We hire people who care deeply about this problem space.
- Our operating principles include extreme ownership, full autonomy, velocity, first principles thinking, and a passion for the AI frontier.
- The Rack Systems Team owns the rack as a product, integrating and deploying compute units into gigawatt-scale AI data centers.
Equal Opportunity
- Fluidstack is an Equal Employment Opportunity Employer.
- All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability and protected veterans’ status, or any other characteristic protected by law.
- Fluidstack will consider for employment qualified applicants with arrest and conviction records pursuant to applicable law.