Full-Time

Senior Quantum Engineer

QSER

Oxford Quantum Circuits

Oxford Quantum Circuits

51-200 employees

QCaaS provider with superconducting qubits

No salary listed

Reading, UK

Hybrid

Bachelor's, PhD

Category
Quantum Computing
Required Skills
Python
Data Analysis

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Requirements
  • A degree in physics, quantum engineering, electrical engineering or another relevant discipline, or equivalent professional experience.
  • Experience owning research projects involving the measurement, characterisation or operation of quantum systems.
  • Hands-on experience running experimental quantum-computing measurements, benchmarking processes or operational methods within an academic or industrial environment.
  • Experience creating or running simulations of the quantum or radio-frequency properties of superconducting circuits.
  • Strong scientific software-development skills, particularly Python or a comparable language, for experimental automation and data analysis.
  • The ability to analyse complex datasets, develop meaningful performance metrics and translate results into clear technical recommendations.
  • Strong project leadership or project-management skills, including an understanding of resource, scheduling and budget implications.
  • Excellent written and verbal communication skills, with the ability to distil complex scientific information for different technical audiences.
  • A creative and evidence-led approach to problem-solving, combined with sound scientific judgement and strong planning skills.
  • The ability to influence technical direction, delegate effectively and support the development of less-experienced engineers.
Responsibilities
  • Lead complex scientific research projects from initial concept and experimental design through to implementation, analysis, reporting and technical recommendations.
  • Design, simulate and characterise novel superconducting components for quantum processors and their supporting infrastructure.
  • Measure, calibrate and benchmark superconducting quantum circuits, developing performance metrics and investigating quantum processing unit design or processor limitations.
  • Lead investigations into alternative qubit architectures and packaging approaches, translating experimental evidence into recommendations for future development.
  • Coordinate the scheduling and resourcing of quantum-processing infrastructure, including multiple cryogenic systems, control electronics and measurement equipment.
  • Shape the QSER technology roadmap by reporting progress, assessing the feasibility of milestones and recommending future scientific priorities.
  • Mentor Quantum Engineers, maintain high-quality project documentation and represent OQC through conferences, research collaborations and scientific publications.
Desired Qualifications
  • A PhD in physics, quantum engineering, electrical engineering or a closely related field.
  • Experience using or developing microwave-frequency control hardware for superconducting quantum systems.
  • Scientific publication experience, particularly within superconducting circuits, quantum measurement or related fields.
  • Experience presenting research findings at conferences, technical reviews or collaborative research forums.
  • Hands-on experience preparing, handling and installing samples within cryogenic enclosures.
  • Knowledge of the specification, installation and maintenance of radio-frequency or direct-current wiring.
  • Experience operating and maintaining cryogenic refrigeration and vacuum systems.
  • Experience developing remote-operation or automation methods for low-noise measurements.
Oxford Quantum Circuits

Oxford Quantum Circuits

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Oxford Quantum Circuits provides Quantum Computing as a Service (QCaaS) using superconducting qubits built on its Coaxmon architecture. Clients access quantum hardware through direct access, managed services, cloud platforms, or colocated data centers, enabling hosted computations and managed workflows without building their own systems. The company differentiates itself with its Coaxmon qubit design, enterprise focus, and its status as the UK’s first QCaaS platform, backed by significant funding and global expansion. Its goal is to broaden enterprise access to quantum computing to tackle complex problems in areas like climate modeling and AI, and to scale a global quantum hardware and services ecosystem.

Company Size

51-200

Company Stage

Series C

Total Funding

$503.8M

Headquarters

Reading, United Kingdom

Founded

2017

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Simplify Jobs

Simplify's Take

What believers are saying

  • June 2026 funding supports Barcelona manufacturing and global QCaaS expansion.
  • OQC’s 2026 waifer-scale 500-plus-qubit packaging demo strengthens technical credibility.
  • New York, Tokyo, London, and Barcelona footprints widen enterprise and government sales reach.

What critics are saying

  • OQC still sells 32-qubit systems while rivals chase larger fault-tolerant roadmaps.
  • Quantum revenue depends on a tiny customer base; JPMorganChase concentrates near-term validation.
  • If 500-plus-qubit packaging slips, OQC becomes a capital-intensive hardware lab, not a platform.

What makes Oxford Quantum Circuits unique

  • OQC’s Coaxmon superconducting architecture targets scalable, fabless quantum hardware.
  • June 2026 Series C makes OQC Europe’s best-capitalized private quantum hardware company.
  • JPMorganChase, AMD, and OQC launched a secure London quantum-AI platform.

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Benefits

Health Insurance

Disability Insurance

Parental Leave

Growth & Insights and Company News

Headcount

6 month growth

-2%

1 year growth

-3%

2 year growth

-3%
Quantum Zeitgeist
Aug 21st, 2026
OQC raises $330M as quantum computing shifts from research to critical infrastructure

Quantum computing firm OQC has completed a £260 million Series C funding round, positioning itself as one of the best-capitalised private quantum computing companies globally. Chief executive Gerald Mullally said the capital will enable OQC to expand internationally and build secure, scalable quantum infrastructure for enterprise and government customers. Mullally noted that recent public market activity, including Quantinuum's initial public offering, is helping build investor confidence in the sector. He described the developments as signalling a shift for quantum computing beyond research towards practical infrastructure. The funding will support OQC's technology roadmap, advancing its quantum processors and software platforms. Mullally indicated the company's strategy includes shaping the industry's next phase through technological innovation and strategic partnerships.

VIPress
Jun 24th, 2026
UK's OQC raises record $330M for quantum computing expansion

Oxford Quantum Circuits (OQC), a British quantum computing startup, has raised £260 million (approximately €300 million) in a Series C round, marking Europe's largest private funding for a quantum computing company. The oversubscribed round was led by Bullhound Capital. Founded in the UK, OQC develops superconductor-based quantum computers for data centres serving enterprises and public administrations. The company has already deployed systems across Europe, North America and Asia, including installations in the UK, US, Japan and Spain. The funding will accelerate international expansion and development of fault-tolerant quantum computing technologies. OQC targets sectors including finance, defence and security, which require advanced computing capabilities for data processing, complex optimisation and enhanced analysis. CEO Gerald Mullally said the market is shifting from technological promises towards concrete deployments addressing real needs.

UK Tech News
Jun 4th, 2026
JPMorganChase, OQC and AMD to build $330M quantum AI platform in London

Oxford Quantum Circuits (OQC), JPMorganChase and AMD have announced a research collaboration centred on a new quantum AI data centre in London. JPMorganChase researchers will test quantum and hybrid quantum-classical computing applications in a secure enterprise environment to address complex financial services challenges. The collaboration aims to investigate how quantum-enhanced AI models can accelerate algorithm discovery for financial use cases. JPMorganChase will be the UK platform's first dedicated user, with full operations expected within 12 months. The platform integrates quantum hardware within a secure enterprise compute environment, enabling JPMorganChase to test hybrid workflows against financial services operational standards. This week, OQC closed an oversubscribed £260 million Series C funding round, Europe's largest private funding round for a quantum computing company.

Sifted
Jun 3rd, 2026
Oxford Quantum Circuits bags $348M ($350M) Series C, Europe's largest private quantum computing round

Oxford Quantum Circuits has raised £260m ($350m) in a Series C round, marking the largest funding for a private quantum computing company in Europe. The round was led by Bullhound Capital, with participation from British Business Bank, European investors including Fynveur and Cofides, and US and Singapore-based firms. The UK-based scaleup builds quantum computers using superconducting qubits and offers them as a service through partner data centres in London, Tokyo and New York. Customers buy computing time rather than purchasing systems outright, an approach particularly attractive to regulated sectors like finance and defence requiring secure data storage. The funding will support geographic expansion and development of next-generation systems. OQC's current most advanced computer has 32 qubits, with CEO Gerald Mullally stating the goal is building systems for the "commercial era of quantum".

Oxford Quantum Circuits
Jun 3rd, 2026
OQC raises £260m in Europe’s largest ever private quantum computing funding round

Oversubscribed Series C will scale OQC’s international footprint and deployed quantum infrastructure.