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Graphcore is seeking a Signal Integrity Engineer to design and optimize high-speed signal paths for advanced AI compute systems operating at datacentre scale. In this role, you will shape the electrical performance of Graphcore hardware platforms, ensuring that 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. Your responsibilities include defining launches, via structures, transmission lines, stack-ups and low-loss materials for future designs. This role spans simulation, lab validation and practical design influence, working from concept through prototype bring-up, debug, validation and support for manufacture.
You will join the Hardware Engineering team, working closely with PCB, package substrate, system architecture and supplier teams. 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.
Graphcore is part of the SoftBank Group and is developing hardware, software and systems infrastructure for next-generation AI breakthroughs. The company brings together AI research specialists, silicon designers, software engineers and systems architects to solve complex problems in AI compute.
REQUIREMENTS:
- 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
The company values transferable skills and diverse experiences; if you meet most essential criteria, you are encouraged to apply.
