Senior Silicon Validation Engineer

We are looking for a Senior Silicon Validation Engineer to join our Cryo-CMOS IC team at IonQ Oxford. You will lead the validation and characterisation of analogue and mixed-signal ASICs for our trapped-ion quantum processors, from test planning and platform development through first-silicon bring-up, debug and system integration.

This is a hands-on technical role. You will shape our validation architecture, build reusable hardware and software, and provide the evidence needed to make confident silicon acceptance decisions. The work includes room-temperature silicon validation and silicon characterisation at cryogenic temperatures (around 4 kelvin), on packaged parts, chip-on-board assemblies and bare die on a cryogenic probe station.