Build the compute kernels that make next-generation AI hardware perform at its limit.
As a Senior Software Engineer, you will create high-performance AI compute libraries for Graphcore’s next-generation hardware. Your work will sit close to the hardware, where every design choice matters.
You will own kernels for linear algebra and tensor operations, including GEMM, convolutions, reductions and fused operations. You will improve performance, correctness and numerical reliability across critical AI workloads.
This role is for engineers who enjoy hard performance problems and care deeply about quality. You will help shape software that enables customers to get more from AI hardware.
The team and cultureYou will join the ML Kernels and Runtime team, an expanding group focused on high-performance compute libraries. The team works close to the hardware and close to the product.
Work happens through clear ownership, practical decision-making and fast technical feedback. Engineers profile, test, debug and improve the product with accountability for real outcomes.
You will be expected to speak up, share knowledge and help others raise the bar. Mentoring, technical judgement and all-round leadership matter here
Responsibilities and Duties- Design and implement kernels for linear algebra and tensor ops (GEMM, batched GEMM, convolutions, reductions, elementwise and fused operations) in C++
- Own performance and correctness - add microbenchmarks, regression tests, numerics validation
- Profile and optimise across for next generation of AI hardware - threading, cache locality, memory layout, and kernel launch efficiency.
- Debug issues, resolve bugs and generally improve the quality and functionality of the product
- Actively engage in and support Agile ways of working within the team
- Mentor colleagues within the team, sharing knowledge and providing guidance where appropriate
Candidate Profile
Essential
- Excellent programming and scripting skills using C++ and Python
- Understanding of processor architectures and profiling on Linux
- Possess excellent written and oral communication skills, good work ethics, high sense of team-work
- Love to produce quality work and be a team player
Desirable
- Strong command of algorithmic performance - vectorisation, memory hierarchy, threading, lock-free patterns
- Hands-on with at least one BLAS/DNN stack and able to read/extend kernels
- Comfort with CPU micro-optimisations and numerical stability/trade-offs across FP32/FP16/BF16/FP8
- Experience integrating native code into PyTorch or similar (custom ops, extensions, dispatch keys)
- ABI/API stability and packaging for Linux system (manylinux, wheels)
· Unlimited annual leave
· Up to 5% matched pension
· Phantom equity – share in Graphcore’s success
· True flexibility in how and where you work
· Office spaces designed for collaboration
· Free food and an on-site barista
· Health cash plan
· Income protection
· Life assurance
· Along with other benefits you can choose from (private medical insurance, dental plan etc)
We welcome people from all backgrounds and experiences and are committed to building an inclusive environment where everyone can do their best work.
We’re an equal opportunity employer and recognise that everyone brings different strengths and perspectives. If you need any adjustments during the interview process, just let us know - we’re happy to support you.
Join the team at GraphcoreGraphcore is one of the world’s leading innovators in Artificial Intelligence compute. It is developing hardware, software and systems infrastructure that will unlock the next generation of AI breakthroughs and power the widespread adoption of AI solutions across every industry.
As part of the SoftBank Group, Graphcore is a member of an elite family of companies responsible for some of the world’s most transformative technologies. Together, they share a bold vision: to enable Artificial Super Intelligence and ensure its benefits are accessible to everyone.
Graphcore’s teams are drawn from diverse backgrounds and bring a broad range of skills and perspectives. A melting pot of AI research specialists, silicon designers, software engineers and systems architects, Graphcore brings together deep expertise to solve complex problems and deliver meaningful progress in AI compute.
If you want to shape the compute libraries behind next-generation AI hardware, we’d love to hear from you. Apply now to help build what comes next.
Skills Required
- Excellent programming and scripting skills using C++ and Python
- Understanding of processor architectures and profiling on Linux
- Add microbenchmarks, regression tests, and numerics validation for correctness
- Experience designing and implementing kernels for linear algebra and tensor ops (GEMM, convolutions, reductions, elementwise, fused operations)
- Strong command of algorithmic performance: vectorisation, memory hierarchy, threading, lock-free patterns
- Hands-on experience with at least one BLAS/DNN stack and ability to read/extend kernels
- Comfort with CPU micro-optimisations and numerical stability/trade-offs across FP32/FP16/BF16/FP8
- Experience integrating native code into PyTorch or similar (custom ops, extensions, dispatch keys)
- ABI/API stability and packaging for Linux systems (manylinux, wheels)
- Excellent written and oral communication skills, teamwork, and strong work ethic
What the Team is Saying
Graphcore Compensation & Benefits Highlights
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Healthcare Strength — Private medical insurance, comprehensive dental/vision, a health cash plan, and mental wellbeing support are listed as standard, with day-one coverage and Spring Health/EAP support noted for the U.S. Life assurance and income protection add further protection for serious illness or injury.
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Leave & Time Off Breadth — Flexible working hours and “unlimited annual leave” are explicitly stated. U.S. materials also note flexible PTO and 11 paid holidays.
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Retirement Support — Retirement programs include a U.K. pension match up to 5% and a U.S. 401(k) with a 100% company match up to 6% (with a year-end true-up). These provisions signal a meaningful employer contribution toward long-term savings.
Graphcore Insights
What We Do
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 datacenter 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.
Why Work With Us
Our team is at the forefront of the machine intelligence revolution, enabling innovators from all industries to build AI-native products to expand human potential. What we do at Graphcore really makes a difference.
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Graphcore Offices
Hybrid Workspace
Employees engage in a combination of remote and on-site work.
At Graphcore, we value wellbeing and flexibility to support a healthy work/life balance. Our hybrid approach encourages office-based colleagues to work onsite three days a week, with trusted flexibility built on trust and transparency for everyone.
