Lead QPU Design Engineer

Quantum Motion is a fast‑growing quantum computing scale‑up based in London that develops silicon‑based quantum processors. We are seeking a Lead QPU Design Engineer to lead end‑to‑end design execution for silicon spin‑qubit quantum processor units (QPUs) and test vehicles, from concept through tape‑out, bridging quantum physics and semiconductor engineering.

Responsibilities

• Translate qubit architecture requirements into manufacturable physical designs, including gate layouts, bias networks, and multi‑qubit interconnects.
• Define connectivity, schematic capture, and generate netlists for circuit simulation and LVS verification.
• Own tape‑outs, manage readiness reviews, verification, and risk management throughout the process.
• Execute critical design work in the engineer’s primary domain (layout or simulation) and review and integrate the complementary domain.
• Collaborate with experimentalists and device‑modeling teams to refine designs and device models based on fabrication constraints and simulation results.
• Define design workflows, standards, toolchains, and guide PDK and DFT development.
• Lead and mentor the QPU Design team.

Qualifications

• PhD or equivalent experience in electrical engineering, physics, or a related field.
• 8+ years of experience in experimental hardware within research‑adjacent or industry environments, having led hardware from concept through tape‑out with personal accountability.
• Deep expertise in one of the following domains with sufficient fluency in the other:
  • Layout‑first: Custom physical design of block‑ and chip‑level layouts using Cadence Virtuoso or similar; hands‑on DRC/LVS/extraction.
  • Simulation‑first: EM/electrostatic/circuit modelling with tools such as Ansys HFSS/Q3D, Keysight ADS, Cadence Spectre, Synopsys Sentaurus; validated models against measured data; iterative layout review and DRC constraint adherence.
• Experience with silicon spin‑qubit, quantum dot, or superconducting‑qubit technologies.
• Understanding of CMOS process integration, 3D integration, or advanced packaging.
• Microwave circuit design experience.
• Proficiency in scripting (Python, SKILL, Tcl) for design automation.
• Experience correlating simulations with low‑temperature measurements.

Benefits

• Competitive salary and share‑option scheme.
• Contributory pension scheme.
• Group private medical insurance.
• Life assurance.
• Cycle‑to‑work scheme.

Location

Central London location (Islington lab).

Equal Employment Opportunity

Quantum Motion is committed to providing equal employment opportunity and does not discriminate based on age, sex, sexual orientation, gender identity, race, colour, religion, disability status, marital status, pregnancy, gender reassignment, or any other protected characteristics covered by the Equality Act2010.

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