Latest Quantum Cryptography Engineer Jobs

Lead Software Engineer

Leads a cryptographic software IP team, overseeing the full software development lifecycle from design to customer delivery. Responsible for technical leadership, architectural decision-making, mentoring engineers, and ensuring high-quality implementation of embedded security solutions. Works closely with hardware teams and customers, with a strong focus on post-quantum cryptography and secure software design.

PQShield United Kingdom

Remote Permanent

Sales Director - Japan

Lead sales strategy and execution for a post-quantum cybersecurity company in Japan, targeting enterprise clients in semiconductor, telecom, automotive, and security sectors. Drive market expansion by building relationships with key stakeholders and closing high-value technical IP deals. Collaborate with field application engineers and global teams to align product development with customer needs.

PQShield United Kingdom

Quantum Algorithms Scientist

Phasecraft is the quantum algorithms company. We are building the mathematical foundations for quantum computing applications that solve real-world problems. Founded in 2019 by Toby Cubitt, Ashley Montanaro and John Morton, we are based in London and Bristol, UK. In...

Phasecraft Bristol, United Kingdom

Hybrid Permanent

Quantum Algorithms Scientist

Phasecraft is the quantum algorithms company. We are building the mathematical foundations for quantum computing applications that solve real-world problems. Founded in 2019 by Toby Cubitt, Ashley Montanaro and John Morton, we are based in London and Bristol, UK. In...

Phasecraft London, United Kingdom

Hybrid Permanent

Quantum Physics open applications

This role is for quantum physics professionals interested in contributing to the development of quantum computing technology. The candidate will work on advancing impactful quantum computer systems within a forward-thinking R&D environment. The position is open to applicants who may not find a specific advertised role matching their expertise but wish to express interest in future opportunities.

Universal Quantum Haywards Heath, United Kingdom

Hybrid Permanent

Senior AMO Physicist - Quantum RF

This role involves experimental research and development in atomic, molecular, and optical (AMO) physics for quantum RF sensor systems. The physicist will design and integrate complex opto-mechanical systems, lead high-value research projects, and collaborate with multidisciplinary teams to advance quantum technologies. A strong focus is on translating product requirements into atomic system designs and demonstrating working quantum devices.

Infleqtion Kidlington, United Kingdom

Hybrid Permanent

Systems Engineer – Quantum Infrastructure

Design and maintain production-scale infrastructure for quantum computing systems, integrating enterprise IT with scientific hardware. Automate deployments using Terraform, Ansible, and Kubernetes while supporting a hybrid Linux/Windows environment. Collaborate with physicists and engineers to build resilient, repeatable systems in a cutting-edge research and development setting.

Adria Solutions Shipton on Cherwell, Oxfordshire, OX5 1JN, United Kingdom £40,000 – £65,000 pa

On-site Permanent

Advanced R&D Scientist - Quantum Algorithms - 920

Develop novel quantum algorithms focused on computational topology and geometry, with an emphasis on extracting topological and geometric invariants from data. Implement and optimize these algorithms on Quantinuum’s quantum hardware, using error mitigation and quantum error correction techniques. Collaborate across the quantum stack and with external partners to advance real-world applications of quantum topological data analysis, while publishing results in top journals and conferences.

Quantinuum United Kingdom

Hybrid Permanent

Manager, Quantum systems IT

Lead the classical IT infrastructure supporting quantum system builds, managing a small team while maintaining hands-on technical involvement. Focus on Linux provisioning, lab networking, hardware integration, and scalable automation in a live R&D and manufacturing environment. Work closely with engineering, DevOps, and physics teams to ensure infrastructure is repeatable, reliable, and ready for scale.

Oxford Ionics Oxford, United Kingdom

Hybrid Permanent

Engineer, Quantum systems IT

Support the classical IT infrastructure that enables quantum hardware development, including system provisioning, lab networking, and integration of scientific devices. Troubleshoot cross-domain issues and improve system repeatability through automation and documentation in a live R&D environment. Work across Linux, Windows, and mixed hardware systems to ensure reliable operation of quantum computing platforms.

Oxford Ionics Oxford, United Kingdom

Hybrid Permanent

Director, Global Quantum System Deployment

This role involves leading the global deployment and lifecycle support of on-premise quantum computing systems, overseeing end-to-end integration from factory to customer site. The position requires building and scaling a field engineering team, managing complex hardware installations including cryogenic and RF systems, and ensuring performance and reliability across international clients. It is a senior technical leadership role focused on operational excellence in quantum system delivery.

Rigetti United States US$240,000 – US$275,000 pa

Hybrid

R&D Scientist, Quantum Algorithms

Design and implement quantum algorithms focused on solving differential equations, with opportunities to publish and collaborate across the quantum computing stack. Work on real-world applications using high-fidelity hardware and contribute to end-to-end resource estimation under realistic constraints.

Quantinuum London, United Kingdom

Hybrid Permanent

Systems Integration Engineer (Field, Quantum Systems)

This role involves deploying and commissioning quantum computing systems at customer sites globally, ensuring hardware and software performance meet specifications. The engineer will lead technical bring-up, troubleshooting, and calibration of superconducting qubit systems, either focusing on cryogenic hardware integration or gate-level calibration and cloud deployment. Collaboration with R&D teams and customer personnel is central, with significant international travel required.

Rigetti United Kingdom

Hybrid Permanent

Optics Engineer

The role involves designing, building, and automating advanced optical systems for quantum photonic technologies, particularly focused on microcavities and laser/imaging systems. The engineer will align and optimise free-space and fibre-based setups, conduct data analysis, and collaborate with cross-functional teams to advance Nu Quantum’s qubit–photon interface. Work is highly experimental and integration-focused within a multidisciplinary R&D environment.

Nu Quantum Cambridge, United Kingdom

On-site Permanent

FPGA Design Engineer

This role involves designing and verifying RTL and embedded code for Xilinx FPGAs and SoCs used in real-time control systems for quantum networking applications. The engineer will work hands-on with ARTIQ Sinara and White Rabbit technologies, developing and debugging hardware subsystems in collaboration with physicists, software, and electronics teams. Key responsibilities include creating test plans, automation of CI/CD pipelines, and contributing to next-generation quantum infrastructure platforms.

Nu Quantum Cambridge, United Kingdom

On-site Permanent