Senior RF IC Design Engineer — Deep-Cryo CMOS for Quantum Silicon

Personio; Greater London; On-site; GBP 120,000 - 180,000; Full time

Benefits offered by this job

Competitive salary

Share options scheme

Contributory pension

Private Medical Insurance

Life Assurance

Cycle-to-work

Flexible working

Central London location

Job summary

Quantum Motion in London is seeking an experienced RF IC Design Engineer to join the IC Design team. You will design CMOS RF circuits to operate at deep‑cryogenic temperatures, interfacing with quantum devices and helping build scalable silicon‑based quantum processors.

The role offers rare early‑employee exposure at a fast‑growing start‑up, with opportunities for professional growth, collaboration with academia, and a chance to impact next‑generation quantum hardware.

Qualifications

• The candidate has a background in heavy research-oriented environments.
• Experience in CMOS RF IC design for sub-10GHz low-power systems.
• 10+ years in RF IC circuit design with CMOS processes.
• Familiarity with Cadence Design and SpectreRF required.
• Solid RF fundamentals and ability to validate principles without heavy simulation.
• Experience with RF testing and DFT for RF blocks.
• Knowledge of EM tools (ADS/EMX/CDT/HFSS) desired.
• Strong analytical and self-motivated with good communication.

Responsibilities

• Architecture-level design of low power Tx chain.
• Block-level schematic design of RF blocks (LNA, PLL, LO, Mixer, VGA, Filters).
• Guide layout and review layout work for blocks.
• Document work for peer review and conduct design reviews.
• Support post-silicon validation and characterization of RF blocks.

Skills

Research environments

CMOS RF design

65nm RF processes

Cadence Design

SpectreRF

RF testing

DFT of RF blocks

EM simulation tools

Analytical problem solving

Communication skills

Education

Industry degree qualification

10+ years RF IC circuit design experience

Tools

Cadence

SpectreRF

ADS/EMX/HFSS

Job description

Quantum Motion in London is seeking an experienced RF IC Design Engineer to join the IC Design team. You will design CMOS RF circuits to operate at deep‑cryogenic temperatures, interfacing with quantum devices and helping build scalable silicon‑based quantum processors.

The role offers rare early‑employee exposure at a fast‑growing start‑up, with opportunities for professional growth, collaboration with academia, and a chance to impact next‑generation quantum hardware.