Senior QPU Design Engineer

IonQ, Inc. [NYSE: IONQ] is the world’s leading quantum platform and merchant supplier - delivering integrated quantum solutions across computing, networking, sensing, and security. IonQ’s newest generation of quantum computers, the IonQ Tempo, is the latest in a line of cutting-edge systems that have been helping customers and partners including Amazon Web Services, and AstraZeneca achieve 20x performance results and accelerate innovation in drug discovery, materials science, financial modeling, logistics, cybersecurity, and defense. In 2025, the company achieved 99.99% two-qubit gate fidelity, setting a world record in quantum computing performance.

Headquartered in College Park, Maryland, IonQ has operations in California, Colorado, Massachusetts, Tennessee, Washington, Italy, South Korea, Sweden, Switzerland, Canada, and the United Kingdom. Our quantum computing services are available through all major cloud providers, while we also meet the needs of networking and sensing customers across land, sea, air, and space. IonQ is making quantum platforms more accessible and impactful than ever before.

Location: Oxford, England, UK. Hybrid, three days per week in the Oxford office.

We are looking for a Senior QPU Design Engineer to join our Processor Design team at Oxford Ionics, now part of IonQ. You will be responsible for integrating all the features required to operate our quantum computers into complex chips, contributing to the team's mission of advancing the design of high performance quantum processing units. You will work closely with scientists and fabrication engineers to bring new designs for ion trapping chips into production, and you will play an important part in shaping the hardware behind our work building the world's most advanced quantum systems.

In this position you will turn operational requirements into chip layout, supporting the delivery of devices that enable new technologies. You will have the opportunity to expand the range of features our chips support, contributing directly to the goal of building utility scale quantum computers.

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