Deployment Physicist, On-premises Installation - 572 in Cambridge

We are seeking a highly qualified Deployment Physicist, On-premises Installation based in our London or Cambridge locations to install and service Helios systems worldwide for our Hardware-as-a-Service business. Helios is our current-generation quantum computer with 98 physical qubits and >99.9% two-qubit fidelities that is available through the cloud. Our first on-premises unit will be installed in Singapore with other locations to follow. The ideal candidate will be based at this Quantinuum site but will travel to other Quantinuum sites for training and to support Helios installations around the world via extended travel.

To develop deep familiarity with the Helios hardware and software, the candidate will support integration, validation, and shipment preparation activities in the United States in-person (if based in the US or via travel otherwise) and remotely. They will then be part of the team installing and validating performance of the system at a customer site. As we move through our increasingly ambitious roadmap, they will contribute to future post-Helios on‑premises offerings during design, execution, and deployment.

All applicants for placement in safety-sensitive positions will be required to submit a pre-employment drug test.

• Successful installation of Helios systems on customer premises including preparation for shipment, relocation, installation, and validation.
• Improve and mature plans and work instructions for the above activities.
• Act as the team’s atomic physics and qubit operations expert, explicitly owning qubit-based integration and validation tasks during deployment.
• Remote support and on-site service (as necessary) of Helios systems with the support of subject matter experts and a global team.
• Participate in integration and validation of Helios systems at Quantinuum prior to deployment.
• Contribute to and support future on‑premises hardware offerings post-Helios.
• Have utmost focus on business success, technical progress, and professional interactions for both you and the team.
• Travel (domestically and internationally) up to 3 months at a time during deployments and 25% otherwise.

• Ph.D. completed.
• Minimum 8 years of post-graduate experience (M.S. or Ph.D. inclusive) as a technical contributor or leader in an atomic physics or quantum computing role.
• Eligibility to complete international travel.

• A deep knowledge of trapped‑ion-based technology, high-performance quantum computing, and technical hardware integration and validation.
• A proven track record of atomic physics research and development as evidenced by scholarly publications, successful program execution, and/or launched products.
• Experience with lasers, laser cooling, atom trapping, cryogenics, ultra‑high vacuum systems, analog and digital electronics, laboratory hardware control, Python, physical modelling, and data analysis.
• A strong drive to exceed performance and schedule expectations.
• Commitment to documenting work via shared note taking as well as the creation and maintenance of standard work documentation, test plans, troubleshooting guides, and configuration documentation.
• Strong communication and collaboration skills.

What is in it for you? Working alongside a highly talented team, with leading names in the quantum computing industry. We offer a highly competitive package, equity, 28 days of paid holiday (in addition to public holidays), a workplace pension, a positive approach to flexible working and enhanced parental and adoption benefits.

About Us Quantinuum is the world leader in quantum computing. The company’s quantum systems deliver the highest performance across all industry benchmarks. Quantinuum’s over 650 employees, including 400+ scientists and engineers, across the US, UK, Germany, and Japan, are driving the quantum computing revolution. By uniting best-in-class software with high‑fidelity hardware, our integrated full‑stack approach is accelerating the path to practical quantum computing and scaling its impact across multiple industries. By joining Quantinuum, you’ll be at the forefront of this transformative revolution, shaping the future of quantum computing, pushing the limits of technology, and making the impossible possible.

Note that employment with us is subject to successfully passing our pre-employment screening checks. We are an inclusive equal opportunity employer. You will be considered without regard to age, race, creed, color, national origin, ancestry, marital status, affectional or sexual orientation, gender identity or expression, disability, nationality, sex, or veteran status.