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Callosum

They split one AI job into parts and send each part to whichever model and whichever chip runs it cheapest or fastest, and sell that as an API.

Hiring / 12 open

What they are hiring for

Read from Callosum’s own job board. Every role links to their posting — apply with them, not with us.

RoleTeamWhereOpen
Expression of Interest - Intelligent Systems EngineerExpression of InterestLondon7 months
Accelerator Systems Software - Member of Technical StaffCompute & InfrastructureLondon5 months
Inference Engine Development - Member of Technical StaffCompute & InfrastructureLondon5 months
Inference Performance & Deployment - Member of Technical StaffCompute & InfrastructureLondon5 months
Networking & Interconnect Systems - Member of Technical StaffCompute & InfrastructureLondon2 months
Research Engineer, Benchmarking - Member of Technical StaffApplied AILondon2 months
Evolutionary Optimisation - Member of Technical StaffCompute & InfrastructureLondon2 months
ML Research Engineer - Member of Technical StaffGeneral CapabilitiesLondon2 months
Agent Runtime & Systems - Member of Technical StaffGeneral CapabilitiesLondon2 months
Research Engineer, Evals - Member of Technical StaffGeneral CapabilitiesLondon2 months
Security Lead - Member of Technical StaffOffice of the CTOLondon2 months
Expression of Interest - InternshipsExpression of InterestLondon12 days

They split one AI job into parts and send each part to whichever model and whichever chip runs it cheapest or fastest, and sell that as an API.

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Callosum
private company
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