# Callosum

AI Infrastructure · London · Seed

Founded by two Cambridge neuroscience PhDs; systems software that breaks an AI workload into tasks and routes each to the model and chip best suited to it, so heterogeneous silicon can stand in for banks of identical GPUs. First equity investment from the UK's Sovereign AI Fund.

- Website: https://callosum.com
- Careers: https://www.callosum.com/join-us
- Sector: [AI Infrastructure & Chips](https://aistartupslist.co.uk/sector/ai-infrastructure.md)

## Facts

- Funding stage: Seed
- Headquarters: London

## Open UK & remote roles

- [Expression of Interest - Intelligent Systems Engineer](https://aistartupslist.co.uk/company/callosum/expression-of-interest-intelligent-systems-engineer-15swg0.md) · London (posted 2026-02-25)
- [Applied AI - Member of Technical Staff](https://aistartupslist.co.uk/company/callosum/applied-ai-member-of-technical-staff-f6p55o.md) · London (posted 2026-06-09)
- [Inference Engine Development - Member of Technical Staff](https://aistartupslist.co.uk/company/callosum/inference-engine-development-member-of-technical-staff-1xiloz.md) · London (posted 2026-05-20)
- [Accelerator Systems Software - Member of Technical Staff](https://aistartupslist.co.uk/company/callosum/accelerator-systems-software-member-of-technical-staff-u20o5a.md) · London (posted 2026-05-20)
- [Inference Performance & Deployment - Member of Technical Staff](https://aistartupslist.co.uk/company/callosum/inference-performance-and-deployment-member-of-technical-staff-xp6apa.md) · London (posted 2026-05-20)
- [Systems Tooling - Member of Technical Staff](https://aistartupslist.co.uk/company/callosum/systems-tooling-member-of-technical-staff-1frxdl.md) · London (posted 2026-05-20)
- [Cloud Systems & Resource Orchestration - Member of Technical Staff](https://aistartupslist.co.uk/company/callosum/cloud-systems-and-resource-orchestration-member-of-technical-8qk8qw.md) · London (posted 2026-05-20)
- [Site Reliability - Member of Technical Staff](https://aistartupslist.co.uk/company/callosum/site-reliability-member-of-technical-staff-kvvyh.md) · London (posted 2026-06-16)
- [Agent Runtime & Systems - Member of Technical Staff](https://aistartupslist.co.uk/company/callosum/agent-runtime-and-systems-member-of-technical-staff-o4caa7.md) · London (posted 2026-08-20)
- [Networking & Interconnect Systems - Member of Technical Staff](https://aistartupslist.co.uk/company/callosum/networking-and-interconnect-systems-member-of-technical-staff-1lwzt7.md) · London (posted 2026-08-20)
- [Research Engineer, Evals - Member of Technical Staff](https://aistartupslist.co.uk/company/callosum/research-engineer-evals-member-of-technical-staff-i46tsi.md) · London (posted 2026-08-20)
- [ML Research Scientist - Member of Technical Staff](https://aistartupslist.co.uk/company/callosum/ml-research-scientist-member-of-technical-staff-uauj0.md) · London (posted 2026-08-20)
- [Evolutionary Optimisation - Member of Technical Staff](https://aistartupslist.co.uk/company/callosum/evolutionary-optimisation-member-of-technical-staff-wb6zn2.md) · London (posted 2026-08-20)
- [Research Engineer, Benchmarking - Member of Technical Staff](https://aistartupslist.co.uk/company/callosum/research-engineer-benchmarking-member-of-technical-staff-1fwwoh.md) · London (posted 2026-08-20)
- [Head of Physical Infrastructure](https://aistartupslist.co.uk/company/callosum/head-of-physical-infrastructure-1s668t.md) · London (posted 2026-08-20)
- [Security Lead - Member of Technical Staff](https://aistartupslist.co.uk/company/callosum/security-lead-member-of-technical-staff-kh05nm.md) · London (posted 2026-08-20)
- [Compliance Lead - Member of Technical Staff](https://aistartupslist.co.uk/company/callosum/compliance-lead-member-of-technical-staff-s9nrcd.md) · London (posted 2026-08-20)
- [ML Research Engineer - Member of Technical Staff](https://aistartupslist.co.uk/company/callosum/ml-research-engineer-member-of-technical-staff-1e68jy.md) · London (posted 2026-08-20)