Senior SI/PI Engineer for High-Speed Boards & Packages

MAI Agents; Oxford; Presencial; GBP 70.000 - 110.000; Jornada completa

Descripción de la vacante

Lumai in Oxford is seeking a Senior SI/PI Engineer to own signal and power integrity across boards and packages. You will perform pre-layout studies, post-layout analysis, and PDN design to meet high-current ASIC/FPGA requirements.

You will build model libraries, contribute to design rules, and work with lab measurements to ensure layout is ready for release. The role spans chip-package-board interdependencies in a new optical computing platform.

Formación

• A degree in electronic engineering, physics or a related discipline, plus proven SI/PI experience on high-speed PCB and/or package designs.
• Proficiency with at least one major EM and circuit simulation suite, such as Ansys HFSS/SIwave, Keysight ADS or Cadence Sigrity/Clarity.
• Strong understanding of transmission line theory, S-parameters, crosstalk, loss mechanisms and channel compliance metrics such as eye diagrams and COM.
• Experience with IBIS and IBIS-AMI models for SerDes and memory interface simulation.
• Solid knowledge of PDN design, including impedance targeting, decoupling optimisation and DC IR drop analysis.

Responsabilidades

• Run pre-layout channel studies to set routing topologies, stackups, materials and design constraints for high-speed interfaces.
• Carry out post-layout SI analysis of critical channels: insertion and return loss, crosstalk, and eye and COM analysis using IBIS-AMI models.
• Design and optimise vias, breakouts, connector launches, and the transitions into optical engines and co-packaged components.
• Set PDN impedance targets, design decoupling strategies, and run DC drop and AC PDN analysis for high-current ASIC and FPGA rails.
• Support package, interposer and board co-simulation with the ASIC team to keep channel and power integrity sound end to end.
• Correlate simulation with lab measurements using TDRs, VNAs and oscilloscopes, and feed the results back into models and design rules.
• Evaluate and characterise PCB materials, connectors and cable assemblies with suppliers and fabricators.
• Build up our SI/PI methodology, model libraries and design guidelines so they can be reused across projects.

Conocimientos

SI/PI experience

Transmission line theory

IBIS/IBIS-AMI modelling

PDN design

S-parameters & eye diagrams

Educación

Bachelors in Electronic Engineering or Physics

Herramientas

Ansys HFSS

Keysight ADS

Cadence Sigrity/Clarity

PSpice

Descripción del empleo

Lumai in Oxford is seeking a Senior SI/PI Engineer to own signal and power integrity across boards and packages. You will perform pre-layout studies, post-layout analysis, and PDN design to meet high-current ASIC/FPGA requirements.

You will build model libraries, contribute to design rules, and work with lab measurements to ensure layout is ready for release. The role spans chip-package-board interdependencies in a new optical computing platform.