Graphcore
Software Engineer - AI Compute Libraries & Performance
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Software Engineer - AI Compute Libraries
About Graphcore
At Graphcore, we’re building the future of AI compute.
We’re a team of semiconductor, software and AI experts with deep experience in creating the complete AI compute stack—from silicon and software to infrastructure at datacentre scale.
As part of the SoftBank Group, backed by significant long-term investment, we are delivering key technology into the fast-growing SoftBank AI ecosystem.
To meet the vast and exciting AI opportunity, Graphcore is expanding its teams around the world.
We are bringing together the brightest minds to solve the toughest problems in a place where everyone has the opportunity to make an impact on the company, our products and the future of artificial intelligence.
Job Summary
As a Software Engineer, you will be responsible for developing new and supporting existing kernels for linear algebra operations on a new generation of AI hardware.
The Team
This is an exciting opportunity to join an expanding team at Graphcore. The ML Kernels & Runtime team is responsible for delivering high-performance compute libraries to help customers maximise performance from AI hardware.
Responsibilities
- Implement kernels for linear algebra and tensor operations, including GEMM, batched GEMM, convolutions, reductions, elementwise, and fused operations in C++
- Contribute to performance and correctness by:
- Adding microbenchmarks
- Implementing regression tests
- Validating numerics
- Profile and optimise across the next generation of AI hardware, focusing on:
- Threading
- Cache locality
- Memory layout
- Kernel launch efficiency
- Debug issues, resolve bugs, and enhance product quality and functionality
- Actively engage in and support Agile ways of working within the team
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Candidate Profile
Essential
- Excellent programming and scripting skills in C++ and Python
- Ability to thrive on solving complex challenges with creativity, think beyond specific components, and consider the bigger picture
- Strong written and oral communication skills, demonstrating:
- High work ethics
- Collaborative teamwork
- Commitment to delivering high-quality work and being a proactive team player
Desirable
- Strong understanding of processor architectures
- Experience or a solid grasp of algorithmic performance, covering:
- Vectorisation
- Memory hierarchy
- Threading
- Lock-free patterns
- Profiling on Linux
- Knowledge of at least one BLAS/DNN stack and ability to:
- Read existing kernels
- Extend functionality
- Awareness of:
- CPU micro-optimisations
- Numerical stability trade-offs across FP32/FP16/BF16
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Benefits
Graphcore delivers an impressive package including:
- Competitive salary
- Flexible working arrangements
- Generous annual leave policy
- Private medical insurance
- Dental plan
- Pension (with employer match up to 5%)
- Life assurance and income protection
- Parental leave policy
- Employee assistance programme (covering health, mental wellbeing, and bereavement support)
Our Bristol office prioritises well-being with:
- Healthy food and snacks provided daily
- In-house barista bar for refreshments
We foster inclusivity and welcome diverse backgrounds. Graphcore is committed to building an environment where everyone can thrive.
Workplace equality and accommodation adjustments for applicants are recognised. Graphcore will support reasonable adjustments during interviews and will discuss requirements with candidates.
Note: Applicants must hold the right to work in the UK. Unfortunately, Graphcore does not currently provide visa sponsorship.
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