Thermal Engineer, Rack Level

San JoseFull-time$200k–$350k2026-10-20 → 2026-10-22

On-site

Core

Own thermal design and validation of Etched's L11 liquid-cooled rack system, including deployment, commissioning, and facility integration for inference hardware.

Role type

Senior IC thermal engineer (rack-level liquid cooling)

Builds

Liquid-cooled server racks and CDU integration for datacenter inference workloads

Domain

Datacenter infrastructure / AI hardware cooling

Deliverable

physical/clinical work

Required skills

Rack-level liquid cooling design, CDU validation and commissioning, hydraulic performance characterization, facility integration, control strategy definition, customer technical support

Preferred skills

Hyperscaler rack-scale direct-to-chip cooling deployment, OCP/ASHRAE TC 9.9 guidelines, 1D flow network modeling (Flownex, MacroFlow), coolant chemistry and fluid integrity testing

Technologies

Flownex, MacroFlow, CDU systems, liquid loops, manifolds, quick disconnects

Responsibilities

Define and validate cooling-loop control strategies; Characterize rack-level thermal and hydraulic performance; Develop deployment and commissioning processes; Investigate and resolve thermal and fluid-related issues; Partner with tray and module thermal engineers; Support GTM and customers on facility integration questions

Seniority

Senior, hands-on IC

About Etched

Etched is building hardware for frontier intelligence. We co-design chips, racks, software, and manufacturing to deliver best-in-class throughput and latency across both prefill and decode workloads. Our first products are heavily focused on **inference**. Backed by hundreds of millions from top-tier investors and staffed by leading engineers, Etched is redefining the infrastructure layer for the fastest growing industry in history.