Director, Systems Software

About IonQ:

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, United Kingdom
Travel: As Needed
Job : 1805

We’re looking for an enthusiastic and highly technical Director, Systems Software who will thrive in our dynamic cross-disciplinary environment. You’d be working closely with our skilled software engineers and our world-leading quantum scientists to plan and manage the development of software that powers our quantum computers.

You will initially be leading a software team of around twenty software engineers with future growth of the team expected. We develop a full stack solution ranging from the real-time control & monitoring of our systems through an IR and quantum compiler layer to application demonstration. Your role will be critical in both specifying the stack as components that can be individually developed and released, and growing the team into a world-class organisation capable of developing and supporting the stack for internal and external customers.

A critical part of this will be to establish and drive suitable development, devops, release, and 3rd line support processes.

The quantum core of our hardware is built from trapped-ion qubits, controlled by devices designed and made by a partner tier 1 fab. We control the ions using electrical signals and laser light, driven by real-time FPGA systems and networked equipment. The required sequences and operations are derived both by low-level experiments that our science teams produce, and by a compilation flow from quantum algorithms.

Our software stack is a combination of Python and Rust.

We are looking for an experienced full-stack software manager, previous exposure to quantum systems is not required.

In this position, you’ll have the opportunity to accelerate the delivery of our software projects, contributing directly to the success of our research and development roadmap.

A focus in this role will be leading the definition and evolution of any internal team processes and the devops processes as our stack matures. You will work collaboratively with other teams to develop stronger cross-team interfaces and processes.

Your key responsibilities can be split into two categories:

• Lead the software team and work with other technical teams to build and maintain long-term roadmaps for our various software projects
• Capture feature requests from internal conversations and external requirements
• Understand conflicting priorities and manage the team to deliver according to company needs and timescales
• Drive detailed software solutions, working with the software team
• Provide clear updates on issues and progress to all stakeholders
• Own the software team’s backlog, working with the team members and project management group to keep it up to date
• Be the first point of call for others in the company to understand how the software fits together at a high level

• Ensure the effectiveness and efficiency of the software team and ensuring the team maintains the right balance of delivery speed and quality
• Support members of the software…