Lead CPU Architect: Drive ISA Extensions & Performance

Company: IC Resources
Apply for the Lead CPU Architect: Drive ISA Extensions & Performance
Location:
Job Description:

Cambridgeshire, England £130-150k (and higher, dependent on experience) Job ID: 424900

Rob Hudson

This is a key position as a Principal CPU Architect or Chief CPU Architect (dependent on levels and relevance of experience) – to work on the latest developments in CPU architecture – for improvements in processing power, performance and optimisation.

Main responsibilities

  • Performance analysis of applications of interest to propose new instructions and ISA extensions
  • Reworking and optimisation of critical parts of applications to support new ISA
  • Implementation of proposed new instructions or uArch tweaks in performance simulator for evaluation of possible performance benefits

Requirement

  • Deep understanding of modern CPU architectures
  • Knowledge and experience of using of latest Aarch64 or X86 instruction sets
  • Background in performance analysis, profiling and workload characterisation
  • Excellent collaboration and interpersonal skills

Considered as a plus

  • Experience in developing and using performance simulators like GEM5 (O3 model), Sniper or others is a big plus
  • Experience in developing and using dynamic binary instrumentation infrastructures like QEMU or DynamoRIO or x86 PIN is a plus
  • Knowledge of NPU/GPU architecture
  • Experience in simulator development for NPU/GPU
  • Experience in implementing instructions in the ARM/x86 architecture is preferred

Please contact Rob Hudson for more information.

7710 N FM 620,Bldg. 13-d, Austin.Texas 78726

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Posted: May 27th, 2026