Lead Mechanical Systems Engineer - Spark at Crusoe · LumiJobs

Responsibilities

Crusoe is a vertically integrated AI Factory company with a mission to accelerate the abundance of energy and intelligence. Our competitive advantage—“Speed is the only moat”—is directly tied to our ability to rapidly design, build, and deploy high-density modular power and compute infrastructure.
Embedded directly within the Spark Modular Data Center (MDC) Business Unit, the Senior Staff Mechanical Systems Engineer - Spark is a key technical engine supporting the mechanical, thermal, and fluid architecture of our MDC platform. You will sit at the crossroads of hardware, software, and physical infrastructure translating next-generation GPU compute workloads, cluster topologies, power envelopes, and cooling requirements into robust, high-performance liquid-cooled MDC system designs.
What You'll Be Working On:
Liquid Cooling System Design: Own system-level design for direct-to-chip (DLC) and hydronic infrastructure, including Coolant Distribution Units (CDUs), primary/secondary loops, flow rate balancing, pressure drop calculations, manifolds, and leak-detection mechanisms. Perform the thermal and fluid calculations — heat load modeling, flow network analysis, pump/heat-exchanger sizing — that turn GPU rack power and cooling requirements into concrete mechanical specifications.
First-Principles Mechanical Integration: Apply core mechanical engineering principles — fluid dynamics, thermodynamics, structural mechanics, vibration/transportation dynamics — to optimize containerized envelope design, structural integrity, and environmental resiliency.
Engineering Partner Engagement: Work with external design & engineering partners and internal teams to review, iterate, and refine CAD models, BIM files, 30/60/90/100% drawing packages, and manufacturing-ready documentation.
Design for Manufacturability (DFM): Partner with Crusoe Industries (CI) and Contract Manufacturers (CMs) to optimize pipe racks, modular connections, skid assemblies, and structural mating for rapid factory assembly and field commissioning.
Spark Platform Evolution: Drive the mechanical and thermal roadmap for future Spark generations, moving from current air-cooled baselines to next-gen high-density liquid-cooled architectures.
Mechanical–Thermal Interface Ownership: Own the mechanical design as it interfaces with compute, power, and networking constraints — working closely with thermal and electrical specialists to ensure rack layout, cabling, and enclosure design are mechanically sound and thermally validated. Serve as the mechanical design authority translating early-stage liquid-cooling concepts into manufacturable production units.
Sustaining Engineering & Continuous Improvement: Provide sustaining mechanical engineering support for deployed and in-production Spark assets — investigating field issues, resolving design or component issues, implementing engineering change orders (ECOs), and feeding field learnings back into future design iterations.
What You'll Bring to the Team:
Bachelor's degree in Mechanical Engineering or a related field; Master's degree a plus.

Lead Mechanical Systems Engineer - Spark

Responsibilities

Qualification

Preferred

Benefits

Company

Crusoe

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