Senior Research Software Engineer

ABOUT INFLEQTIONInfleqtion is a pioneering global leader in quantum technology dedicated to addressing the world's most pressing challenges. By leveraging the principles of quantum mechanics, we develop and integrate cutting-edge quantum computers, sensors, and networks. Our commitment to innovation spans from fundamental physics to advanced commercial produ…

ABOUT INFLEQTIONInfleqtion is a pioneering global leader in quantum technology, dedicated to addressing some of the most complex challenges facing the world today. By leveraging the principles of quantum mechanics, we design and integrate advanced quantum computers, sensors, and networks. Our innovative approach spans from foundational physics to cutting-edge commercial applications, driving the vision of 'quantum everywhere' through a comprehensive ecosystem of devices and platforms. Our mission is to commercialize atom-based quantum solutions that offer remarkable enhancements in performance and computational capabilities.POSITION OVERVIEWWe are excited to invite applications for the role of Quantum Software Engineer, a position focused on developing groundbreaking algorithms and applications for next-generation quantum computing technologies. In this role, you will be responsible for the design, implementation, and optimization of quantum algorithms across diverse areas, including simulation, optimization, sensing-enhanced workflows, and hybrid quantum-classical computation. You will collaborate closely with our hardware, control, and research teams to translate theoretical advancements into efficient, executable workloads, utilizing modern quantum Software Development Kits (SDKs), compiler toolchains, and resource estimation frameworks. The ideal candidate will possess a robust foundation in quantum algorithms and computational mathematics, complemented by practical software engineering skills, enabling the creation of scalable, testable, and high-impact quantum applications that extend the capabilities of both near-term and fault-tolerant quantum systems.

ABOUT THE COMPANYInfleqtion is a pioneering global leader in quantum technology, dedicated to tackling some of the world's most pressing challenges. We leverage the principles of quantum mechanics to develop and integrate cutting-edge quantum computers, sensors, and networks. From groundbreaking physics to advanced commercial solutions, Infleqtion is committed to making quantum technology ubiquitous through our innovative ecosystem of devices and platforms. Our mission is to revolutionize atom-based quantum products, delivering significant enhancements in performance and computational capabilities.LOCATIONThis full-time position is based in our Kidlington and Harwell offices in the United Kingdom. We offer a flexible working policy that allows employees to work up to 2 days a week from home, as work permits.POSITION SUMMARYWe are looking for a Quantum Error Correction Specialist to join our team. This role focuses on the design, analysis, and implementation of fault-tolerant architectures to facilitate scalable, high-fidelity quantum computation. You will create and assess error-correcting codes, decoding algorithms, and fault-tolerant gate constructions specifically for our hardware platforms, transforming theoretical QEC frameworks into practical protocols. Close collaboration with hardware, control, and compiler teams will be essential to model noise processes, enhance syndrome extraction and decoding performance, and establish logical performance metrics that guide system design. The ideal candidate will possess deep expertise in quantum information theory and fault tolerance, alongside robust analytical and simulation skills, effectively bridging theory and practice to elevate the reliability and scalability of next-generation quantum systems.JOB RESPONSIBILITIESPursue advanced research in QEC theory, techniques, and their application in experimental quantum computing.Develop and enhance QEC protocols tailored for experimental gate-based quantum computing, focusing on neutral atom platforms.Utilize mathematical models and numerical simulations to evaluate the behavior and performance of QEC protocols.Design and implement custom QEC decoders.Contribute to identifying and mitigating noise processes in quantum systems.Collaborate with experimental physicists and software engineers to connect theoretical concepts with practical execution.Effectively communicate and interpret cutting-edge research in both theoretical and experimental contexts with colleagues.

Infleqtion is seeking a Senior AMO Physicist to join its neutral atom quantum computing team in the UK. This full-time role is based at the Kidlington, Oxford office and the National Quantum Computing Centre in Harwell, with the option to work from home up to two days per week (subject to business needs and manager approval). Role overview This position centers on hands-on research within the expanding UK Physics Department. The Senior AMO Physicist will support ongoing projects and investigate new concepts for future quantum computing systems. Collaboration with physicists and engineers is a key part of the work. What you will do Project support Translate product requirements into atomic system designs. Model, simulate, and perform analytical calculations to verify system performance. Design and carry out testing and verification plans. Integrate opto-mechanical systems, electronics, and software into quantum devices. Manage technical tasks such as equipment setup and system demonstrations. Identify materials and components for each project. Document progress and track, resolve, and report project issues. Team collaboration Work closely with colleagues to meet project deadlines. Engage with multidisciplinary teams to develop commercial and non-commercial products or draft new quantum-focused initiatives. Adapt to changing project priorities as technology advances. Embrace new methods, integrate feedback, and collaborate with diverse teams to manage uncertainty. Assess complex scenarios and make informed decisions in ambiguous situations.

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