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Global · updated 2d ago

Callosum

Open roles
12
Remote anywhere
0
can apply
Top teams
Compute & Infrastructure 5 · General Capabilities 3 · Expression of Interest 2
Top locations
United Kingdom 12
Observed by alder · through 7 Nov

Is Callosum hiring?

Yes: Callosum has 12 open roles on its own job board. 0 opened in the last 30 days. Most are in Compute & Infrastructure (5), General Capabilities (3), Expression of Interest (2). Most roles are United Kingdom. Last change: 2026-11-07.

What teams is Callosum hiring for?

Compute & Infrastructure: 5 open roles; General Capabilities: 3 open roles; Expression of Interest: 2 open roles.

Hiring pulse

Hiring pulse · Learning · 4/7
Open rolesRemovedobserved

Open roles

Expression of Interest - Intelligent Systems Engineer
London8mo ago
Onsite · United KingdomLast seen 2d ago
Inference Engine Development - Member of Technical Staff
London5mo ago
Onsite · United KingdomLast seen 2d ago
Accelerator Systems Software - Member of Technical Staff
London5mo ago
Onsite · United KingdomLast seen 2d ago
Inference Performance & Deployment - Member of Technical Staff
London5mo ago
Onsite · United KingdomLast seen 2d ago
Agent Runtime & Systems - Member of Technical Staff
London2mo ago
Onsite · United KingdomLast seen 2d ago
Expression of Interest - Internships
London1mo ago
Onsite · United KingdomLast seen 2d ago
Networking & Interconnect Systems - Member of Technical Staff
London2mo ago
Onsite · United KingdomLast seen 2d ago
Research Engineer, Evals - Member of Technical Staff
London2mo ago
Onsite · United KingdomLast seen 2d ago
Evolutionary Optimisation - Member of Technical Staff
London2mo ago
Onsite · United KingdomLast seen 2d ago
Research Engineer, Benchmarking - Member of Technical Staff
London2mo ago
Onsite · United KingdomLast seen 2d ago
Security Lead - Member of Technical Staff
London2mo ago
Onsite · United KingdomLast seen 2d ago
ML Research Engineer - Member of Technical Staff
London2mo ago
Onsite · United KingdomLast seen 2d ago
Expression of Interest - Intelligent Systems Engineer—257dOnsite · United Kingdom
Inference Engine Development - Member of Technical Staff—173dOnsite · United Kingdom
Accelerator Systems Software - Member of Technical Staff—173dOnsite · United Kingdom
Inference Performance & Deployment - Member of Technical Staff—173dOnsite · United Kingdom
Agent Runtime & Systems - Member of Technical Staff—81dOnsite · United Kingdom
Expression of Interest - Internships—47dOnsite · United Kingdom
Networking & Interconnect Systems - Member of Technical Staff—81dOnsite · United Kingdom
Research Engineer, Evals - Member of Technical Staff—81dOnsite · United Kingdom
Evolutionary Optimisation - Member of Technical Staff—81dOnsite · United Kingdom
Research Engineer, Benchmarking - Member of Technical Staff—81dOnsite · United Kingdom
Security Lead - Member of Technical Staff—81dOnsite · United Kingdom
ML Research Engineer - Member of Technical Staff—81dOnsite · United Kingdom

Pay & sponsorship

observed

0 of 12 roles post pay

Licensed UK sponsorgov.uk · 9 Nov ↗

Signals

observed
Roles usually close inClose time · Learning · 0/10
Net roles · 7 daysVelocity · Learning · 3/7
New team signalNew teams · Learning · 2/37

Where they hire

United Kingdom12

By team

Compute & Infrastructure5
General Capabilities3
Expression of Interest2
Applied AI1
Office of the CTO1

Role mix

Software engineering7
ML / AI3
Other1
Security1

Recent activity