Machine Learning Performance Engineer

ML Performance Engineer — Location: London

Join one of the world’s most sought-after trading firms, running one of the largest GPU clusters in finance. They trade hundreds of billions daily across global markets, using advanced machine learning and high-performance computing to drive their strategies. The structure is flat, execution is instant, and bureaucracy doesn’t exist. You’ll be part of a small, highly technical team working at the hardware/software boundary to push ML training and inference beyond what manufacturers consider possible. This isn’t just writing CUDA kernels – you’ll be hand-optimising execution plans, building compiler backends, tuning algorithms for commodity GPUs, and accelerating networking and computation at the microarchitectural level.

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• Expert in C/C++/Rust or similar systems language
  
• Comfortable solving complex algorithmic and low-level performance problems
  
• Experience with Linux kernel/OS development or writing device drivers
  
• Knowledge of PCIe, networking, and GPU architectures
  
• Familiarity with SSA-based IRs and compiler optimisation a plus
  

Bonus: Background in HPC, ML frameworks, or distributed training environments.

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• Please do not apply if you're looking for a contract or remote work.
  
• You must be eligible to live and work in the UK, without requiring sponsorship.
  
• Please ensure you meet the required experience section prior to applying.
  
• Allow 1-5 working days for a response to any job enquiry.
  
• Your application is subject to our privacy policy, found here: https://www.thurnpartners.com/privacy-policy
  

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• Seniority level: Mid-Senior level
  
• Employment type: Full-time
  
• Job function: Referrals increase your chances of interviewing at Thurn Partners by 2x
  

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