How many jobs at Callosum are open right now?

There are 14 open jobs at Callosum on Hiring Right Now as of Nov 14, 2026. 2 of them were posted in the last seven days. The list is rebuilt every hour from the employers' own careers pages.

Are there remote jobs at Callosum?

None of the 14 open jobs at Callosum are listed as remote at the moment. Remote roles appear here as soon as employers post them.

How do I apply for jobs at Callosum?

Open a job and press “Apply on company site”. You go straight to the employer's own careers page and apply there. Hiring Right Now needs no account and charges nothing for applying.

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Jobs at Callosum

Callosum has 14 open roles right now. Most are in Engineering and Security. Read from its own careers page and checked on Nov 14.

Get a “new roles” count for this company in My jobs.

Open roles: 14
Remote: 0
State the pay: 0%
Open 90 days or more: 29%
This week · steady: +2 / −0

Systems Simulation & Performance Modelling - Member of Technical StaffCallosum · 🇬🇧London—RustC++1d
Hardware-Aware Model Optimisation - Member of Technical StaffCallosum · 🇬🇧London—Machine LearningLLM1d
Expression of Interest - InternshipsCallosum · 🇬🇧London—Intern7w
Security Lead - Member of Technical StaffCallosum · 🇬🇧London—Lead2mo
Research Engineer, Evals - Member of Technical StaffCallosum · 🇬🇧London—Machine LearningLLM2mo
Agent Runtime & Systems - Member of Technical StaffCallosum · 🇬🇧London—RustPythonC++2mo
ML Research Engineer - Member of Technical StaffCallosum · 🇬🇧London—LLM2mo
Automated Program Optimisation - Member of Technical StaffCallosum · 🇬🇧London—LLM2mo
Research Engineer, Benchmarking - Member of Technical StaffCallosum · 🇬🇧London—PythonMachine LearningLLM2mo
Networking & Interconnect Systems - Member of Technical StaffCallosum · 🇬🇧London—2mo
Heterogeneous Compute Orchestration - Member of Technical StaffCallosum · 🇬🇧London—5mo
Inference Engine Development - Member of Technical StaffCallosum · 🇬🇧London—PythonC++CUDA5mo
Accelerator Systems Software - Member of Technical StaffCallosum · 🇬🇧London—CUDA5mo
Expression of Interest - Intelligent Systems EngineerCallosum · 🇬🇧London—8mo

Questions about jobs at Callosum

How many jobs at Callosum are open right now?: There are 14 open jobs at Callosum on Hiring Right Now as of Nov 14, 2026. 2 of them were posted in the last seven days. The list is rebuilt every hour from the employers' own careers pages.
Are there remote jobs at Callosum?: None of the 14 open jobs at Callosum are listed as remote at the moment. Remote roles appear here as soon as employers post them.
How do I apply for jobs at Callosum?: Open a job and press “Apply on company site”. You go straight to the employer's own careers page and apply there. Hiring Right Now needs no account and charges nothing for applying.

Tech stack at Callosum

LLM C++Machine Learning Python Rust CUDA PyTorch TensorFlow Kafka

Skills mentioned most often across its open roles.

Where Callosum is hiring

🇬🇧London & the UK · 14 🇪🇺Europe · 14

Companies like Callosum

Based on the skills they hire for.

Work at Callosum? Link your careers page to this list

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