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Ernst & Young

Global professional services: consulting, assurance, tax

Next Frontier Quantum Associate

Security Engineering & ArchitecturePosted on Nov 12
Full-timeLondon, UKNo salary listedIn-person

About the Job

Requirements

  • Foundational understanding of quantum computing principles, qubits, gates, NISQ constraints, and error mitigation.
  • Working knowledge of post-quantum cryptography, including key encapsulation mechanisms, signature schemes, and cryptographic standards.
  • Familiarity with public key infrastructure, Transport Layer Security 1.3, certificate management, and key exchange mechanisms.
  • Proficiency with one or more quantum software development kits: Qiskit, Cirq, PennyLane, AWS Braket, or Azure Quantum/QDK.
  • Strong Python programming capabilities, including numerical libraries such as NumPy, SciPy, and pandas.
  • Understanding of classical optimization, linear algebra, and probabilistic reasoning.
  • Experience with version control using Git, containers using Docker, and continuous integration/continuous delivery workflows.
  • Knowledge of Python, C++, Rust, or an equivalent programming language.
  • Strong written and verbal communication skills, with the ability to explain complex concepts to different audiences.
  • Analytical thinking and a structured, hypothesis-driven approach to problem solving.
  • A Bachelor's or Master's degree in Physics, Computer Science, Cybersecurity, Electrical Engineering, Applied Mathematics, or a related field, or equivalent hands-on experience.
  • Two to three or more years of hands-on experience in at least one of post-quantum cryptographic implementations, applied cryptography or security engineering, or quantum algorithm development.
  • Familiarity with cybersecurity fundamentals, including public-key cryptography, key encapsulation mechanisms, signatures, Transport Layer Security, and public key infrastructure concepts.
  • Understanding of post-quantum cryptography basics and the current standardization landscape.
  • Experience with at least one quantum software development kit, such as Qiskit, PennyLane, or Azure Quantum QDK.
  • Ability to design small experiments, analyze results, and write clear technical documentation.

Responsibilities

  • Lead and support the development, demonstrations, and presentations of solutions in quantum cybersecurity and quantum computing.
  • Contribute to post-quantum cryptography readiness, including risk assessments, migration planning, and cryptographic agility improvements.
  • Develop and evaluate quantum algorithms and workflows for optimization, machine learning, and simulation use cases.
  • Build software kits and tools, design and implement architectures, benchmark performance, and apply software engineering best practices.
  • Produce leadership and sector presentations, assessment reports, standards, and executive-level documents.
  • Collaborate with cross-functional teams including security engineering, machine learning and artificial intelligence groups, platform teams, and product stakeholders.
  • Assess quantum-related risks, including harvest-now-decrypt-later exposure, and contribute to mitigation roadmaps.
  • Prototype and benchmark post-quantum cryptography algorithms, including ML-KEM/Kyber and ML-DSA/Dilithium, within services and applications.
  • Maintain an index comparing current and proposed algorithms, including fully post-quantum-safe and hybrid versions, against operational impacts, and recommend migration roadmaps.
  • Support development of cryptographic inventory tools to detect legacy cryptography dependencies.
  • Implement and test hybrid key exchange schemes and measure latency, throughput, and resource usage impacts.
  • Assist with design and validation of cryptographic agility patterns, certificate lifecycle updates, and key management transitions.
  • Contribute to internal post-quantum cryptography migration guides, standards, and runbooks.
  • Develop accelerators using NISQ-appropriate quantum algorithms, including VQE, QAOA, and quantum machine learning, and industry software development kits.
  • Run testing and validation exercises to estimate viability and usage and support roadmapping of quantum utility for use cases.
  • Build end-to-end prototypes for domain-specific use cases such as optimization, simulations, and modeling involving quantum technologies and quantum and AI/ML technologies.
  • Perform resource estimation, including qubit count, gate depth, and circuit complexity, and evaluate classical-quantum tradeoffs.
  • Maintain reproducible experimentation pipelines using Python, Jupyter, containerization, and continuous integration workflows.

Desired Qualifications

  • Experience in quantum technologies, cryptography, or related computational fields.
  • Publications, preprints, hackathon projects, or open-source contributions in quantum or applied security.

About the Company

Ernst & Young

Global professional services: consulting, assurance, tax

EY (Ernst & Young) provides professional services at a global scale, offering consulting, assurance, tax, and transaction advisory services. It serves clients across industries such as technology, media, real estate, hospitality, and construction. Instead of selling a single product, EY works with clients through tailored engagements where cross-disciplinary teams analyze challenges, design strategies, perform audits, help with tax planning, and assist with mergers or divestitures. What sets EY apart is its worldwide reach and integrated service model, industry-specific expertise, and focus on responsible business practices like sustainability, cybersecurity, and workforce flexibility. EY’s goal is to help organizations improve performance, manage risk, and achieve sustainable growth while building a better working world.

Company size
5,001-10,000
Company stage
Not listed
Total funding
Not listed
Headquarters
Boston, MA
Founded
1991

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