Callosum is hiring: 12 open roles
As of 2026-10-02, Callosum has 12 open roles on its career site, mostly engineering & manufacturing (2), data science & ai (1) and devops, sre & cloud (1), in United Kingdom (12).
| Website | not mapped |
|---|---|
| Applicant tracking system | Ashby (careers page): 12 roles |
| Open roles | 12 |
| New this week | 0 |
| Roles with a salary range | 9 (75%) |
| Newest posting date | 2026-09-23 |
| In our index since | 2026-10-02 |
Open roles by role family
Open roles by country
Top locations
Teams and departments
Most common job titles
| Title | Openings |
|---|---|
| Accelerator Systems Software - Member of Technical Staff | 1 |
| Agent Runtime & Systems - Member of Technical Staff | 1 |
| Evolutionary Optimisation - Member of Technical Staff | 1 |
| Expression of Interest - Intelligent Systems Engineer | 1 |
| Expression of Interest - Internships | 1 |
| Inference Engine Development - Member of Technical Staff | 1 |
| Inference Performance & Deployment - Member of Technical Staff | 1 |
| ML Research Engineer - Member of Technical Staff | 1 |
| Networking & Interconnect Systems - Member of Technical Staff | 1 |
| Research Engineer, Benchmarking - Member of Technical Staff | 1 |
| Research Engineer, Evals - Member of Technical Staff | 1 |
| Security Lead - Member of Technical Staff | 1 |
Open roles by posting month
Month of the posting date the ATS gives, for roles still open on 2026-10-02.
Callosum in hiring lists
FAQ
- Is Callosum hiring?
- Yes. As of 2026-10-02, Callosum has 12 open roles on its career site.
- What roles is Callosum hiring for?
- Mostly engineering & manufacturing (2), data science & ai (1) and devops, sre & cloud (1). Common titles: Accelerator Systems Software - Member of Technical Staff, Agent Runtime & Systems - Member of Technical Staff and Evolutionary Optimisation - Member of Technical Staff.
- Where is Callosum hiring?
- Most open roles are in United Kingdom (12).
- Which applicant tracking system does Callosum use?
- Ashby (the public job board we read daily).