Staff Analogue Designer (CMOS Modelling)

Location: Oxford, England, United Kingdom, based in the Oxford office with the option to work remotely a few days per week. Travel up to 5%.

Company

hirify.global develops integrated quantum computing, networking, sensing, and security solutions, including trapped-ion quantum processors and cryo-CMOS control systems.

What you will do

• Own the full-chip CMOS modelling strategy, including architecture, abstraction levels, accuracy targets, and sign-off criteria.
• Develop Verilog-A and Verilog-AMS models for analogue blocks such as references, DACs, switches, regulators, and clock distribution.
• Build real-number models with SystemVerilog nettypes/UDNs and legacy wreal for digital verification and regression.
• Derive behavioural models from mathematical descriptions, including transfer functions and Z-parameter networks.
• Run model-versus-schematic correlation and incorporate measured silicon behaviour into the modelling flow.
• Establish mixed-signal co-simulation and regression using Cadence AMS Designer, Xcelium, and Spectre; contribute to design reviews and mentor engineers.

Requirements

• 10+ years of deep analogue and mixed-signal design and modelling experience, ideally with production tapeout flows.
• Expertise in Verilog-A, Verilog-AMS, and real-number modelling.
• Strong mathematical foundations in linear systems, Laplace and z-domain analysis, network parameters, noise, and non-linearity.
• Fluency with production Cadence flows and tools such as Virtuoso, Spectre, Xcelium, and AMS Designer or similar.
• Experience with SystemVerilog, MATLAB, or Python/NumPy for analysis and model validation.
• Ability to collaborate with analogue designers, verification engineers, and system engineers in a highly technical environment.

Nice to have

• Experience with extreme-environment silicon, including cryogenics or space.
• Experience defining modelling standards, fidelity levels, and sign-off criteria across an IC development flow.

Culture & Benefits

• Autonomy, productivity, respect, and an inclusive working environment.
• Comprehensive medical, dental, and vision plans.
• Matching 401(k), unlimited PTO, and paid holidays.
• Parental and adoption leave, legal insurance, and a home technology stipend.
• Employment is subject to export-control and government-contract compliance requirements, including additional immigration-status verification.