Latest software engineer Jobs

Junior AMO Physicist

This role involves hands-on development and operation of experimental neutral atom quantum computing systems, focusing on laser-cooled atoms, ultra-high vacuum setups, and precision optics. The candidate will work closely with physicists and engineers to integrate hardware components, conduct quantum experiments, and optimise system performance. It offers early-career researchers a chance to contribute directly to commercial quantum computing platforms while gaining expertise in AMO physics and quantum engineering.

Infleqtion Harwell, United Kingdom

Hybrid Permanent

Frequency Comb Photonics Engineer

This role involves hands-on development, testing, and optimisation of optical frequency comb systems—including micro-combs and photonic integrated circuits—for quantum technology applications. The engineer will characterise photonic components, build optical test setups, and collaborate with cross-functional teams to integrate comb technologies into quantum systems for precision timing, sensing, and laser stabilisation. Work is based in Kidlington with some presence at Harwell and hybrid flexibility.

Infleqtion Kidlington, United Kingdom

Hybrid Permanent

Senior Optical Fibre Engineer

This role involves developing and evaluating advanced optical fibre technologies for high-performance photonic systems used in quantum computing. The engineer will perform optical modelling, design experiments to validate fibre properties, and collaborate with internal teams and external partners to integrate fibres into larger optical platforms. Work focuses on specialty fibres with attention to modal behaviour, loss, dispersion, and coupling in demanding environments.

PsiQuantum Runcorn, WA7 1UP, United Kingdom £64,000 – £76,500 pa

On-site Permanent

Senior Optical Packaging & Assembly Engineer

Develops and implements high-performance, scalable opto-electronic packaging workflows for photonic integrated circuits, focusing on fibre-to-chip alignment and packaging prototyping. Works closely with internal teams and external vendors to transfer and scale packaging processes within a quantum computing R&D environment.

PsiQuantum Runcorn, WA7 1UP, United Kingdom

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

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

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

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

Director of Facilities

Lead facilities operations for a high-tech quantum computing campus, managing complex building systems, vendor relationships, and compliance across laboratories, data centres, and manufacturing environments. Oversee infrastructure projects, space planning, and 24/7 site support while ensuring safety, resilience, and scalability. Mentor facilities teams and align with global stakeholders in a fast-growing, technically advanced environment.

Oxford Ionics Oxford, United Kingdom

Hybrid Permanent

International Tax and Transfer Pricing Manager

This role involves leading transfer pricing strategy and documentation for IonQ’s international entities, ensuring compliance with OECD BEPS guidelines and local tax regulations. The manager will support corporate income tax compliance, contribute to global tax provision under US GAAP, and collaborate with finance, legal, and treasury teams to build scalable tax processes in a fast-growing multinational environment. Key activities include preparing Master Files, benchmarking studies, and monitoring global tax developments such as Pillar Two.

Oxford Ionics Oxford, 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

Senior AMO Physicist

This role involves advancing neutral atom quantum computing systems through experimental physics and system design. The Senior AMO Physicist will design and integrate complex opto-mechanical systems, perform simulations, and lead testing and verification efforts. Collaboration with multidisciplinary teams and stakeholder communication are key, with work split between Oxford and Harwell, including partial remote work.

Infleqtion Harwell, United Kingdom

Hybrid Permanent

Senior AMO Physicist - Inertial Sensing

The role involves developing atomic system designs for inertial sensing applications using atom-based quantum technologies. You will perform modelling, simulations, and analytical calculations, while integrating complex opto-mechanical systems, electronics, and software into quantum devices. The position requires close collaboration with physicists and engineers, conducting laboratory work from setup to system demonstration, and contributing to technical documentation, proposals, and publications.

Infleqtion Kidlington, United Kingdom

Hybrid Permanent

Intern, System Architecture

This internship involves developing photonic quantum computing architectures through simulation, software implementation, and protocol design. Interns will work on translating quantum information theory into physical system designs, using programming and modeling to advance fault-tolerant quantum systems. The role emphasizes collaboration, innovation, and technical rigor in a cutting-edge quantum computing environment.

PsiQuantum United Kingdom £31,200 – £56,160 pa

Hybrid Internship

Deployment Physicist, On-premises Installation - 572

Installs and validates quantum computing systems (Helios) on customer premises globally, with deep involvement in atomic physics and qubit operations. Supports integration, shipment, and deployment activities, including international travel for on-site installations and remote support. Contributes to future post-Helios hardware development through design and validation phases.

Quantinuum United Kingdom

Hybrid