Quantum Engineer - Superconducting Amplifiers & RF Design at Oxford Quantum Circuits, Reading, England, United Kingdom. A mid-level full time position in the Materials Science & Device Engineering team, listed under hardware engineering.
As a Quantum Engineer specialising in Superconducting Amplifiers & RF Design, you'll develop the technologies that enable high-performance readout of OQC's quantum processors. Combining RF and microwave engineering with advanced simulation, device design and experimental characterisation, you'll turn complex technical challenges into reliable hardware solutions that help push our quantum computing capabilities forward.
The Role
Joining our Device Scaling team, you'll take ownership of developing, modelling and optimising superconducting amplifier technologies and their integration into OQC's quantum processor readout systems. This is a hands-on technical role where you'll work across the full development lifecycle, from circuit simulation and microwave design through to device fabrication, cryogenic testing and performance optimisation. You'll have the autonomy to investigate complex challenges, make evidence-based engineering decisions and develop reusable tools and methodologies that accelerate future development. Working closely with specialists across readout, experimental engineering, software, fabrication and packaging, you'll help translate innovative amplifier concepts into practical, high-performance technologies.
What You'll Be Working On
- Design, simulate and optimise superconducting amplifier circuits and microwave environments, using electromagnetic and circuit modelling to improve performance.
- Develop and characterise amplifier devices, investigating gain, bandwidth, noise, saturation and stability to identify and overcome performance limitations.
- Design RF and microwave networks for impedance matching, coupling, filtering, pumping and signal routing, translating technical requirements into practical hardware solutions.
- Develop physical device layouts and collaborate with fabrication and packaging teams to optimise manufacturability, integration and device performance.
Requirements
- Strong practical experience in RF and microwave circuit design, analysis and experimental characterisation.
- Experience working with superconducting amplifier technologies, superconducting circuits or closely related low-noise microwave systems.
- Proven experience developing and interpreting circuit and electromagnetic simulations, including understanding modelling assumptions and limitations.
- Experience designing, developing or characterising electronic or microwave devices, with an understanding of fabrication, packaging and integration constraints.
- Strong scientific programming skills, preferably Python, for simulation, numerical optimisation, automation and experimental data analysis.
- Experience developing or improving scientific simulation, measurement or optimisation workflows within a research or engineering environment.
- Hands-on experience using RF and microwave instrumentation to validate designs, investigate device performance and resolve technical challenges.
- Knowledge of microwave networks, impedance matching and device layout for fabrication.
- A track record of independently delivering complex technical projects or work packages, using sound engineering judgement and evidence-based problem-solving.
- Strong communication and collaboration skills, with the ability to work across specialist technical disciplines, document findings and share knowledge.
Nice to Have
- Experience designing or characterising Josephson parametric amplifiers, travelling‑wave parametric amplifiers or other superconducting nonlinear devices.
- Knowledge of nonlinear circuit modelling, parametric mixing or amplifier stability analysis.
- Experience developing microwave filters, broadband impedance‑matching networks or related RF technologies.
- Experience working with cryogenic microwave measurement systems or superconducting quantum computing hardware.
- Experience integrating amplifier technologies into superconducting qubit readout systems.
- Experience developing shared scientific software, automated measurement systems or reusable analysis frameworks.
- Experience mentoring colleagues, providing specialist technical guidance or contributing to technical reviews.
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Quantum Engineer - Superconducting Amplifiers & RF Design in Reading employer: Entangled Future
At IonQ, we are at the forefront of quantum computing innovation, and as a Staff Supplier Quality Engineer in Oxford, you will play a crucial role in ensuring our supply chain meets the highest standards of quality and reliability. Our collaborative work culture fosters continuous learning and growth, providing you with unique opportunities to lead supplier quality initiatives while working alongside some of the brightest minds in the industry. With a commitment to employee development and a dynamic environment that encourages creativity and excellence, IonQ is an exceptional employer for those seeking meaningful and impactful careers.
