Looking for inference performance jobs in the UK with visa sponsorship? Callosum is hiring a Member of Technical Staff for Inference Performance & Deployment in London.
Photo: Data center infrastructure via Wikimedia Commons.
Inference Performance Jobs in the UK: Overview
| Job Title | Inference Performance & Deployment – Member of Technical Staff |
| Employer | Callosum |
| Location | London |
| Salary | £101,000–£192,000 per year plus equity |
| Job Type | Full-time, On-site |
| Experience | Experience deploying large model inference |
| Visa Sponsorship | Confirmed |
| Closing Date | Not specified in the available job information |
About the Employer
Callosum is a London-based AI infrastructure company building software that orchestrates heterogeneous models and chips. Founded by Cambridge computational neuroscience PhDs, it raised $100 million in seed funding led by Atomico in 2026.
Job Responsibilities
- Run experiments self-hosting models on cloud and on-prem hardware configurations
- Characterise performance envelopes systematically across providers
- Develop reproducible deployment patterns optimised for latency, throughput and cost
- Improve caching, request scheduling, batching and resource allocation in orchestration software
- Provide feedback on bottlenecks from new accelerator support and engine features
- Build benchmarking harnesses, regression suites and performance dashboards
Requirements
- Experience deploying and benchmarking large model inference in production-equivalent environments
- Familiarity with multi-node GPU deployments and networking stacks
- Strong end-to-end performance characterisation skills
- Familiarity with serving frameworks such as Triton Inference Server
- Clear communication skills for translating data into actionable feedback
Visa Sponsorship and International Applicants
Callosum confirms it offers visa sponsorship and relocation benefits to hire the best in the world. The role is on-site in London.
Salary and Benefits
- Competitive salary determined by skills and experience, range £101,000–£192,000
- Equity ownership
- Private healthcare
- Relocation support
What you need to Know
Pros
- Visa sponsorship confirmed
- Equity and private healthcare
- Work with heterogeneous accelerators
Cons
- On-site London only
- High technical bar for inference systems
How to Apply
Applications are handled through Ashby. Submit your CV and relevant experience details.
Closing
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