OverviewGraphcore is a leading innovator in Artificial Intelligence compute, developing hardware, software and systems infrastructure to enable the next generation of AI breakthroughs and the widespread adoption of AI solutions across every industry. As part of the SoftBank Group, Graphcore collaborates with a bold ecosystem to enable Artificial Super Intelligence and ensure its benefits are accessible to everyone. Graphcore’s teams bring together AI research specialists, silicon designers, software engineers and systems architects in a culture of continuous learning and innovation.Job SummaryAs a hardware signal integrity engineer you will develop, extract and simulate PCB structures to ensure that the high speed SERDES (112Gbps) and DDR interfaces perform correctly within the system budget. You will work closely with the PCB and package substrate CAD engineers to design component signal launches from BGA components and connectors, layer transition via structures, and cable interconnect. You will define the low-loss materials to be used for future designs and work closely with Graphcore’s system architecture team and suppliers to ensure the best possible performance. You will be an expert user of high speed PCB simulation tools and be familiar with industry best practice in high speed digital system design.The TeamGraphcore’s Hardware Engineering Team creates both products for volume production and hardware test & validation systems based on Graphcore’s IPU processor. These systems enable Graphcore’s customers to develop leading-edge machine-learning solutions for training and inference.Responsibilities and DutiesSignal and Power Integrity specialist for the development of production systems and test boards for Graphcore’s family of processors.Development of printed circuit board structures for high frequency (112Gbps, 16Gbps) SERDES interfaces, DDR interfaces.System, PCB and substrate level simulation and analysis of signal and power integrity.PCB design requirement and constraint definition, PCB layout supervision.Prototype bring-up, evaluation, validation & system test.Candidate Profile5+ years’ experience in high-speed digital circuit development, with a deep understanding of signal and power supply integrity.Knowledge of high-speed circuit design requirements to ensure signal integrity and robust rejection of interference and crosstalk.Experience of high frequency (tens of GHz) SERDES design and validation.Experience with ANSYS SIWave, HFSS, and/or Mentor Hyperlynx Signal and Power Integrity tools.High speed processor system design with experience in interfaces such as SERDES, PCI, DDR, Ethernet, etc.Design of BGA & connector pad launches, via structures and transmission lines for GHz signals.Extensive practical lab work including bring-up, debugging and validating designs.Expertise in the use of vector network analyzers, high speed digital oscilloscopes, signal generators.A rigorous approach to ensure designs work correctly the first time.Independent working and responsibility, with excellent cooperation and communications skills to work in a small team.Experience working in a small team requiring a wide range of skills, participating in all parts of the development cycle from concept to testing in the lab and supporting manufacture and customers.Benefits and EnvironmentIn addition to a competitive salary, Graphcore offers flexible working, a generous annual leave policy, private medical insurance and health cash plan, a dental plan, pension (matched up to 5%), life assurance and income protection. We have a generous parental leave policy and an employee assistance programme (which includes health, mental wellbeing, and bereavement support). We offer healthy food and snacks at our Bristol office and have a barista bar. Graphcore is committed to an inclusive work environment and an equal opportunity process, with flexibility in interview arrangements and reasonable adjustments available.SponsorshipApplicants for this position must hold the right to work in the UK. We are unable to provide visa sponsorship or support for visa applications at this time.UK Demographic DataAs part of our recruitment process, we may collect confidential diversity data. This data is anonymised and used for statistical purposes to improve our hiring process and to support an inclusive workplace. Responses are confidential and do not impact your application. #J-18808-Ljbffr