Staff Analog Mixed-Signal Design and Verification Engineer

About the role

The Staff Analog Mixed-Signal Design and Verification Engineer will join the Cryo-CMOS IC team to design and verify analog and mixed-signal blocks for quantum computing systems. This role involves owning full-chip integration and developing mixed-abstraction models to verify ASICs that control quantum processors from room temperature down to cryogenic levels. You will shape design and modelling methodologies while ensuring models remain correlated with schematic and measured silicon.

Responsibilities

• Own the full-chip modelling strategy including architecture, abstraction levels, and sign-off criteria.
• Design analog and mixed-signal blocks such as references, DACs, switches, regulators, and clock distribution.
• Manage top-level integration by defining interfaces and running full-chip mixed-signal simulations.
• Develop Verilog-A and Verilog-AMS models and assemble them into a simulatable full-chip environment.
• Build real-number models to enable efficient digital verification and regression.
• Derive models from mathematical transfer functions and network parameters.
• Perform model-versus-schematic correlation and integrate measured silicon behavior back into designs.
• Lead block-level design reviews and mentor engineers on circuit design and modelling.

Required skills

• Analog design
• Mixed-signal design
• Verilog-A
• Verilog-AMS
• SystemVerilog
• Cadence Virtuoso
• Spectre
• Xcelium
• MATLAB
• Python
• NumPy
• Circuit simulation
• Layout
• Silicon validation

Nice to have

• Cryogenic silicon design
• Space-grade silicon design
• Parasitic extraction

Benefits

• Medical insurance
• Dental insurance
• Vision insurance
• 401(k) matching
• Unlimited PTO
• Paid holidays
• Parental leave
• Adoption leave
• Legal insurance
• Home technology stipend

About the Company

IonQ, Inc. is a leading quantum platform and merchant supplier delivering integrated quantum solutions across computing, networking, sensing, and security. The company is known for its IonQ Tempo quantum computer and has achieved world-record performance in quantum computing.