Chief AI Compute Infrastructure & Fleet Lead

AI Startups UK; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Competitive salary

Equity

Private healthcare

Visa sponsorship

London office on-site

Job summary

Callosum seeks an experienced leader to own and scale its physical compute infrastructure across sites, coordinating design, deployment and commissioning with vendors and facilities. You will build the team, establish operational systems, and ensure fleet reliability and observability as the footprint grows.

The role focuses on turn-key hardware deployments, power/cooling optimization, and end-to-end lifecycle management to support diverse AI workloads in a rapidly evolving environment.

Qualifications

• Experience designing, deploying, or operating high-density compute infrastructure.
• Strong understanding of power, cooling, rack design, networking, storage and compute interactions.
• Proven ability to drive complex infrastructure deployments across teams and vendors.

Responsibilities

• Scope new deployments across site selection, power, cooling, racks and networking.
• Coordinate delivery, commissioning and dependencies with facilities, OEMs and providers.
• Build and lead the operational fleet infrastructure, telemetry, health monitoring and maintenance.

Skills

High-density compute infra

HPC clusters

AI infrastructure

Power & cooling design

Networking

Vendor coordination

Infra team leadership

Job description

Callosum seeks an experienced leader to own and scale its physical compute infrastructure across sites, coordinating design, deployment and commissioning with vendors and facilities. You will build the team, establish operational systems, and ensure fleet reliability and observability as the footprint grows.

The role focuses on turn-key hardware deployments, power/cooling optimization, and end-to-end lifecycle management to support diverse AI workloads in a rapidly evolving environment.