About the job
Design the high-speed signal paths that let advanced AI compute systems perform at datacentre scale.
As a Signal Integrity Engineer, you will shape the electrical performance of Graphcore hardware platforms. Your work will help 112Gbps and 224Gbps SERDES, DDR and processor interfaces operate within demanding system budgets.
You will develop, extract and simulate PCB structures across production systems and test boards. You will define launches, via structures, transmission lines, stack-ups and low-loss materials for future designs.
This role spans simulation, lab validation and practical design influence. You will work from concept through prototype bring-up, debug, validation and support for manufacture.
The team and culture
You will join the Hardware Engineering team, working closely with PCB, package substrate, system architecture and supplier teams. Work moves through simulation, design review, lab evidence and practical trade-offs.
You will be expected to own signal integrity decisions across complex board and package interfaces. The team values careful analysis, pace and clear communication when problems need action.
Decisions are made close to the engineering detail. You will challenge designs, guide constraints and help teams reach the best performance possible.
What we’re looking for
· Strong experience in high-speed digital circuit development, with deep signal and power integrity knowledge
· Experience with high-frequency SERDES design and validation, including tens of GHz operation
· Expertise using tools such as ANSYS SIWave, HFSS, Mentor HyperLynx or similar
· Ability to design BGA and connector launches, via structures and transmission lines for GHz signals
· Hands-on lab experience using VNAs, high-speed oscilloscopes and signal generators
· Rigorous approach to design, debug and validation, with strong ownership and communication skills
While we have outlined a set of requirements, we value transferable skills and diverse experiences. If you meet most of our essential criteria, we encourage you to submit an application and showcase how your background makes you a strong candidate.
Benefits
· Flexible working: Balance your work and personal life with greater flexibility
· Generous leave: Take time to rest, recharge and enjoy life outside of work
· Retirement planning support: Up to 5% matched pension
· Phantom equity: Share in Graphcore’s success
· Workplace experience: Enjoy thoughtfully designed office spaces for collaboration, with free food and an on-site barista to support your day
· Peace of mind protection: Income protection and life assurance to provide financial security for you and your loved ones
· Flexible benefits: Tailor your benefits package with a choice of additional options, including private medical insurance and dental cover
· Optional benefits: Dental cover, health cash plan, private medical insurance, cycle to work scheme, give as you earn
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 Graphcore
Graphcore 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 high-speed interfaces behind next-generation AI compute, we’d love to hear from you. Apply now to join Graphcore.
Skills Required
- Strong experience in high-speed digital circuit development with deep signal and power integrity knowledge
- Experience with high-frequency SERDES design and validation including tens of GHz operation
- Expertise with tools such as ANSYS SIWave, HFSS, Mentor HyperLynx or similar
- Ability to design BGA and connector launches, via structures and transmission lines for GHz signals
- Hands-on lab experience using VNAs, high-speed oscilloscopes and signal generators
- Experience across simulation, lab validation, prototype bring-up, debug, validation and manufacturing support
- Rigorous approach to design, debug and validation with strong ownership and communication skills
What the Team is Saying
Graphcore Compensation & Benefits Highlights
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Healthcare Strength — Healthcare is presented with day-one U.S. medical coverage, plus dental/vision, mental health support, and concierge services. Wellbeing extras such as an EAP and pet insurance broaden the health-focused package.
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Retirement Support — Retirement programs include a company-matched 401(k) in the U.S. and matched pensions in the U.K. Employer-provided life insurance and disability/income protection further reinforce long-term financial security.
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Leave & Time Off Breadth — Time off is framed as flexible or unlimited in multiple locations, with paid holidays and generous parental leave highlighted. Flexible hours are emphasized to accommodate personal needs alongside a hybrid model.
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.
