Head of Physical Infrastructure
Callosum · London
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- Company
- Callosum
- Location
- London
- Posted
- August 20, 2026
About this job
About the Role Callosum believes that the next generation of AI infrastructure will be built from a much more diverse set of hardware than the clusters of today. Scaling that infrastructure creates a new physical systems problem: different accelerators bring different power densities, cooling requirements, rack constraints, network topologies, vendor dependencies, and deployment models. We want to find ways to turn those increasingly complex inputs into physical infrastructure that can be deployed repeatedly and scaled. This role owns Callosum’s physical compute infrastructure, from the first assessment of a potential deployment through to the reliable operation of the resulting cluster.…
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