NYSE: the company] is the world’s leading quantum platform and merchant supplier - delivering integrated quantum solutions across computing, networking, sensing, and security. the company’s newest generation of quantum computers, the the company 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. 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.

Location: This role is based at our Oxford, England (UK) office, with the option to work a few days a week remotely.

Travel: Up to 5%. We are looking for a senior Systems Software Engineer to join our Runtime Software team at Oxford Ionics / the company. In this role, you will be responsible for working directly with the experimental scientists to implement the real‑time control system behaviours and provide abstractions they require for their experiments, contributing to the team’s mission of enabling our science teams to experiment and improve the primitive operations which allow compute, and building towards fault tolerant computation.

You’ll play an important part in shaping the core, Rust, libraries and the execution environment which take our system from a collection of hardware to a quantum computer, and support our work in building the world’s most advanced quantum systems. Interfacing with system orchestration,



non-realtime control and compiler teams to ensure our work integrates seamlessly with the wider software architecture. To be successful, you will need strong programming skills in a systems programming language, experience with software system design, and a desire to produce high quality code appropriate to a real‑time workplace.

We’re looking for someone who can quickly iterate on low-level code in a collaborative, cross‑disciplinary, environment and contribute effectively within a fast moving, highly technical team. Have strong programming skills in one or more mainstream programming languages Have experience with a systems programming programming Have experience with real‑time linux or embedded systems or another low‑latency computing environment Have developed excellent communication skills both within the context of software and across disciplines Are used to maintaining and producing high quality code reviews and appropriate testing Compensation will vary based on individual factors such as education, qualifications, and experience of the final candidate(s), specific office location, and calibration against relevant market data and internal team equity. Posted base salary figures are subject to change as new market data becomes available.

Our benefits include comprehensive medical, dental, and vision plans, matching 401(k), unlimited PTO and paid holidays, parental/adoption leave, legal insurance,



and a home technology stipend. We are committed to equity and justice. We welcome different voices and viewpoints and do not discriminate on the basis of race, religion, ancestry, physical and/or mental disability, medical condition, genetic information, marital status, sex, gender, gender identity, gender expression, transgender status, age, sexual orientation, military or veteran status, or any other basis protected by law.

US Technical Jobs S. export control and government contract restrictions. S. citizen, U.S. national, U.S. permanent resident, or lawfully admitted into the U.S. as a refugee or granted asylum) status for export controls and government contracts work, obtaining any necessary license, and/or confirming the availability of a license exception under U.S. export controls. Person for export control and government contracts work purposes, the company may choose not to apply for a license or decline to use a license exception (if available) for you to access export‑controlled technology that may require authorization, and similarly, you may not qualify for government contracts work that requires U.Accordingly, we will have some additional questions regarding your immigration status that will be used for export control and compliance purposes, and the answers will be reviewed by compliance personnel to ensure compliance with federal law.

US Non-Technical Jobs S. citizen or national, U.S. permanent resident (i.e., Accordingly, we will have some additional questions regarding your immigration status that will be used for export control and compliance purposes, and the answers will be reviewed by compliance personnel to ensure compliance with federal law. #

📌 Staff Software Engineer, Runtime (Oxford)
🏢 IonQ
📍 Oxford