Power Integrity Engineer

About the job Shape the power delivery that will make Graphcore’s next-generation AI compute systems reliable. As a Power Integrity Engineer, you will analyse power-delivery networks across silicon, package and PCB, turning complex behaviour into practical design recommendations. You will build PDN models, investigate parasitics, and use frequency-domain and time-domain analysis to understand stability, droop, resonances and transient response. Your work will directly inform decoupling, layout, and power and ground distribution choices. You will use electromagnetic simulation to understand resistance, inductance, coupling and impedance. You will also validate assumptions, identify technical risks, and connect simulation results with hardware measurements. You will start with clearly scoped PI problems, supported by experienced engineers when wider decisions are involved. As your capability grows, you will own larger parts of the PDN. The team and culture You will work alongside experienced PI engineers and colleagues across hardware disciplines, connecting analysis with real design decisions and measurements. You will own defined technical problems and move quickly from modelling to recommendations. Decisions are grounded in evidence, physical understanding and clear communication of uncertainty. You will contribute to design reviews, speak up when results expose risk, and take responsibility for the quality of your analysis. What we’re looking for Build, integrate and analyse PDN models for defined power rails, package structures, PCB designs or subsystems. Use frequency-domain impedance analysis and time-domain simulation to investigate voltage stability, droop, resonances and transient response. Evaluate decoupling choices and placement, considering capacitance, parasitics and the interaction between silicon, package and PCB. Use electromagnetic simulation to extract and understand resistance, inductance, coupling and impedance in power and ground structures. Che

About the job Shape the power-delivery architecture behind Graphcore’s high-performance AI compute systems, from voltage regulation through package, PCB and silicon. As Staff Power Integrity Engineer, you will provide technical leadership on Graphcore’s most complex power-delivery challenges. Your analysis and judgement will directly influence architecture and product decisions. You will define modelling strategies, optimise decoupling and analyse PDN impedance, voltage droop, transient response and regulator interactions. You will turn complex results into clear engineering decisions, requirements and sign-off approaches. You will lead significant PI issues through resolution and create alignment across silicon, package, board, power, systems and validation teams. You will also develop reusable methods and mentor engineers, raising power-integrity capability across Graphcore. The team and culture The Signal and Power Integrity team sits at the centre of Graphcore’s hardware development. We work across disciplines to understand electrical behaviour and guide consequential architecture decisions. You will own complex PI problems and drive them through to resolution. Decisions are grounded in modelling, first-principles reasoning, hardware evidence and clear assessment of uncertainty. You will challenge assumptions, communicate risk clearly and help teams make pragmatic trade-offs. Technical influence matters more than reporting lines. What we’re looking for Deep practical expertise in power integrity and complex power-delivery network design. Strong understanding of PDN impedance, transient behaviour, voltage droop, resonance, stability and decoupling across high-current digital systems. Ability to reason across silicon, package, PCB, voltage regulation and system boundaries. Strong capability in electromagnetic modelling, circuit simulation, model extraction and selecting appropriate abstraction methods. Engineering judgement to assess model validity, uncertainty an

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.

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.

About the job Validate the memory and system interfaces that keep advanced AI compute reliable under real product conditions. As a Validation and Debug Engineer, you will help prove Graphcore silicon and platforms work across the conditions our customers need. You will build deep understanding of our devices, boards and system behaviour. You will create and execute validation and debug plans for new hardware platforms. Your focus will include LPDDR5-9600, slow-speed interfaces, PCB issues, power behaviour and signal integrity. This is hands-on lab work with real ownership. You will investigate failures, tune memory subsystems and turn complex findings into clear actions across hardware and firmware. The team and culture You will work with Architecture, Silicon Engineering, Hardware Engineering, Firmware, PCB design, power and signal integrity teams. Progress comes through lab evidence, practical judgement and clear debug reports. The team moves quickly because the problems are real and often complex. You will own bring-up activity, drive root cause analysis and keep issues moving across teams. Decisions are made close to the data. You will be expected to speak up, challenge assumptions and help teams choose the right corrective action. What we’re looking for · Strong hands-on hardware debug experience, including board bring-up and subsystem debug · Experience validating and tuning LPDDR memory subsystems, ideally including LPDDR5 · Ability to debug PCB, power, signal integrity and interface issues through to root cause · Knowledge of DDR training, timing optimisation, margin analysis, eye diagrams and stability validation · Confident use of lab instrumentation, including high-bandwidth oscilloscopes, BERT systems and VNA/TDR equipment · Ability to work independently, take responsibility and drive issue resolution across hardware and firmware teams While we have outlined a set of requirements, we value transferable skills and diverse experiences. If you meet most of

About the job Own the component choices that help Graphcore products reach manufacturing with quality built in. As Component Engineer, you will support NPI and volume manufacturing across Graphcore’s hardware products. You will help specify, select and source the components needed for performance, reliability, quality and yield. Your work will connect engineering requirements with supplier capability and manufacturing reality. You will manage component data, BOM revisions, compliance checks, supply risks and alternative sourcing routes. You will work with manufacturing, test, quality, supply chain, suppliers and contract manufacturers. You will also help identify enabling component technologies for next generation products. This role suits someone who enjoys detail, electronics and practical problem solving. You will influence decisions that protect product delivery and strengthen manufacturing resilience. The team and culture You will join the Manufacturing and Technology Process team within Operations. The team works across Bristol, Cambridge and Taiwan, close to foundry, package assembly and PCBA subcontractors. Work happens through clear ownership, careful data management and direct engagement with internal and external partners. You will speak up when component risk, quality or supply continuity needs action. Decisions are grounded in technical evidence, supplier insight and manufacturing impact. The team values people who act responsibly, move issues forward and keep complex details under control. What we're looking for · Strong electronics knowledge, including component parameters, datasheets and practical selection trade-offs · In depth working knowledge of BOM management and sourcing systems, such as Arena and Silicon Expert · Good understanding of PCB manufacturing and SMT assembly processes · Ability to understand interactions between silicon, package and PCB design · Experience working with electronics supply chain suppliers, preferably including offshor