Datacenter Design Lead

You will lead the physical design of Sesterce's AI factory sites, owning power topology, cooling architecture, civil works, and facility layout from concept through construction handover. What you will do Own datacenter campus and compute hall design: power topology, cooling topology, rack density planning, cable routing strategy, and physical deployment standards Design for 100 kW to 1 MW+ racks, including liquid cooling, CDU loop architectures, chilled water systems, rear-door heat exchangers, immersion readiness, and megawatt-scale redundancy strategies Lead CAD, CFD/CFM modeling, thermal simulation, electrical one-lines, grounding strategy,UPS and generator integration, and fire suppression design inputs Drive electrical architecture decisions across utility interconnection, switchgear, UPS, backup generation, grounding, and fault-tolerant distribution strategies Create repeatable design patterns that scale across multiple campuses and deployment waves without losing quality; serve as the senior technical authority for physical infrastructure tradeoffs affecting AI cluster deployment and lifecycle cost What we are looking for Experience building hyperscale campuses, HPC datacenters, liquid-cooled facilities, or Deep knowledge of mechanical and electrical systems engineering for mission-critical environments, including direct-to-chip liquid cooling and advanced thermal architectures Strong command of simulation and facility design workflows (CAD, CFD) and cross-functional delivery with construction and utility partners Ability to coordinate site selection, capacity planning, and utility timelines alongside long-range cluster roadmaps Demonstrated success bridging facility engineering detail with strategic infrastructure roadmaps J-18808-Ljbffr