Quantum Engineer - Measurement Infrastructure

Silicon Quantum Computing (SQC) is at the forefront of global efforts to build the world’s first commercial-scale quantum computer, while delivering quantum-enhanced AI and simulation products to customers today.

Backed by over 25 years of technological excellence, SQC is a full-stack quantum computing company that leverages its proprietary manufacturing process to engineer atomic qubits in silicon with 0.13 nanometer precision. It is the most precise semiconductor manufacturing in the world, enabling systems with world-leading algorithmic fidelity, and a decisive advantage in the global quantum computing race.

Our products are commercially deployed and generating revenue. Watermelon, our quantum-enhanced AI system, is delivering superior results on real-world problems across energy, telecom and finance. Quantum Twins, our simulation platform, provides unparalleled ability to model quantum systems, accelerating molecule and materials discovery.

This is SQC: building the future of computing while delivering quantum impact today.

About the role

We are hiring a Quantum Engineer to develop and validate the cryogenic infrastructure that connects SQC’s silicon quantum processors to the classical world. As our processors scale, the wiring, interconnects, and quantum-classical interfaces inside our dilution refrigerators become as critical as the qubits themselves. You will test and validate cryogenic wiring and connector solutions, including both in-house and third-party products, develop cross-talk testing protocols for high-density signal delivery, and assess how cryogenic components affect qubit performance. This role suits an early-career engineer or physicist who enjoys careful, hands-on laboratory work and wants to build the infrastructure that makes large-scale quantum computing possible.

Role responsibilities

• Test and validate cryogenic wiring, attenuation stacks, interconnects, and connector solutions.
• Develop and execute cross-talk testing protocols for high-density cryogenic signal delivery.
• Assess the impact of cryogenic components and configurations on qubit performance, including noise, thermalisation, and warming effects.
• Operate and maintain cryogenic dilution refrigerator systems, and contribute to their monitoring and reliability.
• Develop and maintain test and data analysis code, and document results clearly against defined requirements.
• Collaborate with hardware engineering and measurement teams on quantum-classical interfaces and fridge configurations.
• Maintain and support specialised laboratory and RF equipment.

Your experience

Essential:

• Bachelor’s, Honours, or Master’s degree in physics, electrical engineering, quantum engineering, or a related discipline.
• Hands-on laboratory experience in cryogenics, RF/microwave test and measurement, or low-temperature physics.
• Proficiency in coding using Python.
• Highly organised, detail-oriented, and rigorous in testing and documentation.
• Excellent communication skills, with the ability to explain complex technical concepts to diverse audiences.
• Ability to work effectively in multidisciplinary teams with shared ownership of outcomes.

Desirable:

• PhD degree in physics, electrical engineering, quantum engineering, or a related discipline.
• Hands-on experience setting up and operating cryogenic dilution refrigerator systems.
• Strong background in RF measurement techniques and signal integrity.
• Experience measuring qubits or other cryogenic quantum devices.
• Familiarity with cryogenic wiring, attenuation, and filtering design for quantum computing systems.

The recruitment process

For roles at SQC, expect 3-4 interviews, meeting a few members of the team and focusing on your core eligibility for the role, your skills and how they align, and finally your values and how they align. We'll give you a more specific run-through if you're successful in making it to the first interview.

As part of our obligations to our clients, we require that successful candidates submit to background checks, including a National Police Check, Right to Work checks, as well as employment and qualifications verification. We won't contact anyone until we're confident there's a fit between SQC and yourself.

Equal opportunity

SQC is an equal opportunity employer. We value diverse perspectives and experiences, and encourage applications from candidates who may not meet every listed requirement. If you’re excited about the role and believe you can contribute, we encourage you to apply.

Export controls

This position may require access to export-controlled information or technology. Employment may be subject to applicable export control laws and may require eligibility assessment based on factors such as nationality, citizenship, or residency, and, where necessary, obtaining relevant export licenses or approvals.

About SQC

SQC was founded by renowned physicist and materials scientist Michelle Simmons, who pioneered the field of atomic electronics, including the development of the world’s first single-atom transistor and the first integrated circuit built with atomic precision. Our Chair, Simon Segars, former CEO of Arm, is a leader in the semiconductor industry and was instrumental in developing the processors that powered the mobile computing revolution.

As a full-stack company with in-house QPU manufacturing, SQC can design, produce and test new quantum chips in under a week, enabling rapid iteration and a decisive advantage in the race to build the world’s first commercial-scale quantum computer.

SQC is a high-accountability environment built on a simple principle: Every Atom Counts. If you’re looking to play a meaningful role in building the next frontier of computing, we’d love to hear from you.