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Accelerator Systems Software - Member of Technical Staff

Callosum· Compute & Infrastructure
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LondonFull-timePosted 3mo ago

About the role

Role focused on building low-level systems software to enable heterogeneous accelerators for AI workloads. Own design decisions that influence performance and reliability across diverse hardware, kernels, drivers, and runtime tools to surface new silicon capabilities.

Responsibilities

  • Build and maintain kernels, device drivers, and firmware for heterogeneous accelerators
  • Design and implement accelerator scheduling at the execution level — kernel launches, dataflow optimisation, and resource management across diverse hardware
  • Optimise execution paths for latency, throughput, and resource utilisation across accelerator types
  • Work closely with internal teams and hardware vendors to onboard new accelerator platforms
  • Contribute to low-level runtime software that bridges our inference stack and the underlying hardware

Qualifications

  • Demonstrable interest in a variety of accelerator microarchitectures
  • Deep experience in kernel development, device driver authoring, or firmware engineering
  • Familiarity with accelerator programming models (CUDA, ROCm, or vendor-specific SDKs)
  • Experience with compiler infrastructure such as MLIR or LLVM
  • Strong debugging skills in environments with limited tooling and incomplete documentation

Skills

Required:KernelsDevice driversFirmware engineering
Nice to have:CUDA/ROCm/vendor SDKsMLIR/LLVM

Benefits

  • Competitive Salary, determined by skills and experience
  • Equity & Ownership
  • Private healthcare
  • Visa sponsorship and relocation benefits to hire the best in the world
  • In-person work at London office with supportive setup
Last updated Oct 14, 2026. Interested? Apply on the company site.

About Callosum

The Intelligent Systems Company.

Callosum - Co-evolving chips & intelligence

AISystems companychipscomputedevelopmentheadline-ai-europe-100-2026heterogeneousinfrastructure
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