Graphcore - Signal Integrity Engineer

• Development of printed circuit board structures for high frequency (112Gbps, 16Gbps) SERDES interfaces, DDR interfaces • PCB stackup definition • System, PCB and substrate level simulation and analysis of signal and power integrity • Graphcore Integrated Circuit device interface requirements definition, tool & vendor relationships • PCB design requirement and constraint definition, PCB layout supervision • Prototype bring-up, evaluation, validation & system test • Candidate Profile • Candidate Profile • 5+ 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 is essential • 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. • This position will require extensive practical work in the lab, bringing up, debugging and validating designs • Expertise in the use of vector network analysers, high speed digital oscilloscopes, signal generators • A rigorous approach is required to make sure designs will work correctly the first time • Independent working and the taking of responsibility, with excellent cooperative and communications skills to work in a small team environment • Experience working in a small team, which requires a wide range of skills, an eagerness to participate in all parts of the development cycle from concept to testing in the lab and supporting manufacture and customers.