5 hours ago
London, United KingdomIntern
Responsibilities
- Work on high-performance systems and low-level performance engineering.
- Develop inference infrastructure, orchestration, or distributed systems.
- Contribute to hardware bring-up, kernel development, or accelerator programming.
- Work on simulation, modelling, or workload design as opportunities arise.
Requirements
- Be an exceptional student interested in difficult AI infrastructure problems.
- Have unique skills or be studying or experienced in high-performance systems, inference infrastructure, distributed systems, hardware bring-up, kernel development, accelerator programming, simulation, modelling, or workload design.
Benefits
- Internships are considered on an ongoing basis rather than during a fixed cycle.
- The opportunity is based in or associated with Callosum's London engineering team.
- This is a general expression of interest and not a specific internship placement.
About Callosum
Callosum builds AI infrastructure that unifies heterogeneous compute—software and systems to orchestrate diverse accelerators and the physical clusters they run on—for organizations training and serving models. The privately held company was founded in 2025 and is headquartered in London. It focuses on designing, deploying, and operating mixed-hardware compute fleets across sites and vendors, and raised a seed round in 2026.