Latest Quantum Software Engineer Jobs

Senior Compiler Engineer - Systems Team

This role involves developing and optimizing compiler software for Riverlane's DeltaFlow hardware, enabling integration with quantum control systems. The engineer will adapt low-level code in Python and C++ to ensure reliable data communication, benchmark system performance, and troubleshoot latency issues. Working closely with customers and internal teams, the role bridges technical pre-sales, system deployment, and product development in a cutting-edge quantum computing environment.

Riverlane Cambridge, United Kingdom £68,000 – £100,000 pa

Hybrid Permanent

System Test Engineer

As a System Test Engineer at Riverlane, you will work closely with engineering teams to develop and maintain rigorous testing processes for cutting-edge quantum computing solutions. Your role involves designing novel tests, diagnosing test failures, and improving the quality assurance cycle, all while contributing to the development of groundbreaking QEC technology.

Riverlane Cambridge, United Kingdom £60,000 – £90,000 pa

Hybrid Permanent Part-time

Senior Quantum Sales Director

This role involves identifying, developing, and closing strategic opportunities for IonQ's quantum computing solutions across various sectors including enterprise, government, defence, and research. The Senior Quantum Sales Director will build relationships with senior leaders, lead complex sales cycles, and position IonQ as a critical partner in next-generation computing.

Oxford Ionics Oxford, United Kingdom

On-site Permanent

Senior Quantum Sales Director, South Korea

The Senior Quantum Sales Director will lead strategic sales growth in South Korea, developing high-value commercial and government opportunities. Responsibilities include building executive relationships, progressing complex sales opportunities, and aligning customer needs with IonQ’s quantum computing platform.

Oxford Ionics Daejeon, Korea (Republic of)

On-site Permanent

Optical Architect (Design)

The Optical Architect role involves designing and developing the optical aspects of quantum computing systems, translating abstract quantum protocols into hardware specifications. You will work closely with cross-functional teams to analyze, evaluate, and improve the architectural design, focusing on qubit networking and performance modeling.

PsiQuantum Runcorn, WA7 1UP, United Kingdom

On-site Permanent

System Architect, Simulations & Models

PsiQuantum’s mission is to build the first useful quantum computers—machines capable of delivering the breakthroughs the field has long promised. Since our founding in 2016, our singular focus has been to build and deploy million-qubit, fault-tolerant quantum systems.Quantum computers harness...

PsiQuantum 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

Senior Quantum Engineer, Superconducting Qubits

This role involves designing, executing, and interpreting experiments to push the performance and scalability of superconducting qubit systems. You will develop new gate schemes, explore advanced control protocols, and test architectural ideas that influence platform-level decisions, working in a collaborative environment with a high degree of autonomy.

Rigetti United States US$170,000 – US$205,000 pa

On-site Permanent

Business Development Manager - Quantum

ABOUT THE COMPANYInfleqtion is a global leader in quantum-enabled sensing, positioning, timing, and quantum computing technologies. Our technologies serve commercial enterprises, critical infrastructure operators, and government customers across global markets.LOCATIONInfleqtion has offices in the USA, United Kingdom and Australia. This...

Infleqtion Kidlington, United Kingdom

Hybrid Permanent

Business Development Manager - Quantum for Defence & Space

ABOUT THE COMPANYInfleqtion is a global quantum technology company delivering advanced sensing, precision timing, and quantum computing technologies to government and commercial customers. We develop and deploy cutting-edge quantum solutions that enhance navigation, positioning, communications, quantum information processing, and sensing...

Infleqtion Kidlington, United Kingdom

Hybrid Permanent

Senior Staff Field Engineer - Quantum Applications - Europe

As a Senior Staff Field Engineer at IonQ, you will lead client discussions, inspire them to implement quantum applications in their business, and work on Proof-of-Concepts with the IonQ Application team. You will also navigate competitive objections, create technical assets, and partner with various teams to grow IonQ's presence in the quantum computing market.

IonQ Oxford, United Kingdom

Hybrid Permanent

Nanofabrication Engineer

The Nanofabrication Engineer will focus on developing and testing bespoke MEMS actuators and miniaturized optical cavity modules, crucial for Nu Quantum's next-generation Qubit Photon Interface. You will work closely with a multi-disciplinary team to optimize high-precision assembly processes and coordinate with external foundries to refine the microfabrication flow.

Nu Quantum Cambridge, United Kingdom

On-site Permanent

Supply Chain & Procurement Lead

AtUniversal Quantum, we are building the next generation of quantum computers — machines capable of solving problems once thought impossible. Our technology has the potential to transform industries from healthcare to aerospace, materials science, and beyond. As we scale from...

Universal Quantum Haywards Heath, United Kingdom

Hybrid Permanent

Recruiting Lead

At Universal Quantum, we are building the next generation of quantum computers — machines capable of solving problems once thought impossible. Our technology has the potential to transform industries from healthcare to aerospace, materials science, and beyond.We are seeking a...

Universal Quantum Haywards Heath, United Kingdom

Hybrid Permanent