Senior Identity and Access Management (IAM) Engineer

ABOUT THE ROLE AND TEAM Quantum Motion is a fast-growing quantum computing scale-up based in London founded by internationally renowned researchers from UCL and Oxford University with over 40 years’ experience in developing qubits and quantum computing architectures. Bringing together state-of- the-art cryogenic facilities and an outstanding interdisciplinary team, we are developing quantum processors based on industrial-grade silicon chips, with the potential to radically transform computing power in areas such as materials modelling, medicine, artificial intelligence and more. OUR TEAM Since 2021 our team has been listed every year in the “Top 100 Startups worth watching” in the EE Times in 2021 and 2022, and our technology breakthroughs have been featured in The Telegraph, BBC and the New Statesman. Our founders are internationally renowned researchers from UCL and Oxford University who have pioneered the development of qubits and quantum computing architectures. Our chairman is the co-founder of Cadence and Synopsys, the two leading companies in the area of Electronic Design Automation. We’re backed by a team of top-tier investors, and we have recently closed our Series C funding of $160 million.   We bring together the brightest quantum engineers, integrated circuit (IC) engineers, quantum computing theoreticians and software engineers to create a unique, world-leading team, working together closely to maximise our combined expertise. Our collaborative and interdisciplinary culture is an ideal fit for anyone who thrives in a cutting-edge research and development environment focused on tackling big challenges and contributing to the development of scalable quantum computers based on silicon technology.   This is a rare and exciting opportunity to be an employee at a scale-up shaping the future of quantum computing. There are vast opportunities for professional growth and to make an impact within the company.  Our team of 100+ is based across London, Oxford, San Sebastián and Sydney, with our primary hub in Islington (London). FUNCTIONS OF THE ROLE The Cloud Engineering Team builds cloud-based solutions, supports the cloud platform and helps to drive its adoption and expansion while also collaborating with other teams. Furthermore, the Cloud Engineering Team looks after the on-prem IT infrastructure.   The primary function of this position will be to take responsibility for the successful development, management and maintenance of software services to ensure that the production services perform effectively, while maintaining a high level of internal customer satisfaction. This includes developing, maintaining, supporting, and optimising key functional areas, particularly internal applications and servers in a hybrid infrastructure. You will develop, troubleshoot and resolve software and process problems in a timely and effective fashion.   This is a rare and exciting opportunity to be an early employee at a start-up shaping the future of quantum computing, and in particular to form a new team within the company. There are vast opportunities for professional growth and to make an impact within the company.   As a Senior DevOps Engineer, you will bridge the gap between high-level strategy and hands-on execution. This role requires a robust software engineering background, a diagnostic problem-solving mindset, and a relentless passion for automation. Given our hybrid footprint, this position offers the unique challenge of managing both cloud-native services and physical on-site infrastructure.     Functions of the Role  * Design, provision, and manage large-scale, highly available cloud infrastructure platforms, optimizing for     heavy compute workloads and high-concurrency applications. * Implement and maintain modular IaC (Terraform or CloudFormation) to automate the provisioning of secure, low-latency, and multi-region cloud environments. * Architect and maintain high-performance, high-IOPS cloud storage solutions, ensuring seamless data synchronisation, backup strategies, and optimal throughput. * Automate the deployment, configuration, and auto-scaling of workload orchestrators, container platforms, and core service components to ensure high resource utilisation and cost efficiency. * Enforce strict security protocols across all environments by implementing Zero Trust architectures, secure IAM roles, and automated configuration management (e.g., Ansible, Packer) for hardened OS images. * Provide expert-level support for complex infrastructure and platform issues, documenting automated workflows and mentoring junior team members on cloud-native best practices. EXPERIENCE - ESSENTIALS * Proven track record of architecting, deploying, and maintaining production-grade, highly scalable workloads on AWS. * Deep expertise in Terraform (preferred) and CloudFormation for building modular, version-controlled infrastructure environments. * Solid knowledge of high-performance and distributed cloud storage solutions (e.g., Amazon FSx, EFS, EBS, NetApp ONTAP). * Expert-level proficiency with Enterprise Linux distributions (RHEL/Rocky/Ubuntu) and systems-level troubleshooting. * Professional proficiency in Python or Bash for building automation tooling, custom monitoring scripts, and complex system integrations. * Deep understanding of enterprise IAM patterns, including Active Directory/LDAP integration for consistent access control across hybrid environments. * Ability to translate complex infrastructural scaling decisions into actionable guidance for development teams and cost-benefit updates for leadership. EXPERIENCE - DESIRABLE * Proven track record of architecting and deploying production HPC workloads on AWS using AWS ParallelCluster, SOCA or custom Slurm fleets. * Ability to architect for maximum cost efficiency, implementing automated spot-instance utilization, auto-scaling strategies, and Savings Plans optimization. * Proficiency in monitoring infrastructure health and application performance using tools like Prometheus, Grafana, ELK stack, or CloudWatch, with a focus on identifying bottlenecks. * Experience designing and implementing automated CI/CD pipelines (e.g., GitLab CI, GitHub Actions, Jenkins) for software and infrastructure deployment. * Certifications: AWS Certified Solutions Architect Professional, AWS Certified DevOps Engineer Professional, or AWS Certified Advanced Networking. BENEFITS ●      Be part of a creative, world-leading team ●      Competitive salary and share options scheme ●      Contributory pension scheme ●      Private Medical Insurance ●      Choose your own laptop/kit ●      Life Assurance ●      Cycle-to-work Scheme ●      Flexible working ●      Central London location EEO STATEMENT Quantum Motion is committed to providing equal employment opportunity and does not discriminate based on age, sex, sexual orientation, gender identity, race, colour, religion, disability status, marital status, pregnancy, gender reassignment or any other protected characteristics covered by the Equality Act 2010.

ABOUT US PhysicsX is a deep-tech company with roots in numerical physics and Formula One, dedicated to accelerating hardware innovation at the speed of software. We are building an AI-driven simulation software stack for engineering and manufacturing across advanced industries. By enabling high-fidelity, multi-physics simulation through AI inference across the entire engineering lifecycle, PhysicsX unlocks new levels of optimization and automation in design, manufacturing, and operations — empowering engineers to push the boundaries of possibility. Our customers include leading innovators in Aerospace & Defense, Materials, Energy, Semiconductors, and Automotive. The Role We are recruiting for a Senior Software Security Developer within our Core Platform Services Team. You will be responsible primarily for writing secure code components that many teams will use across the business. There is a strong emphasis on authentication for this role. What you will do * Design and implement platform security features and guardrails. * Act as an SME for security for the Core Services development team. This includes mentoring, performing threat modeling, sand ecurity code reviews. * Help shape incident response procedures and vulnerability management workflows * Support the response team by validating and remediating product security vulnerabilities. * Contribute to secure coding standards and provide training/mentorship to developers What you bring to the table * 8+ years in a developer role focused with strong focus on designing and building security features * Extensive RBAC/ABAC knowledge and implementation experience * Experience with user, agent, and machine authentication workflows. * Hands-on experience with secure coding, OWASP Top 10, and threat modeling * Strong developer skills and extensive experience shipping code to production. * Experienced in CI/CD, IaC, Python and Go. * Track record of balancing pragmatism and security rigor in a fast-paced team * Thorough knowledge of authentication and authorization protocols (e.g., OAuth, OpenID Connect, SAML, LDAP, etc.). * Strong communication skills, comfortable working across development teams and managing multiple initiatives. Nice to Have Skills * Strong understanding of AI security fundamentals * Participation in bug bounty programs * Familiarity with the BSIMM framework * Experience in cloud security including identity and access management and cloud-native services. What we offer Build what actually matters Help shape an AI-native engineering company at a formative stage, tackling problems that genuinely matter for industry and society. This is work with real-world impact - and something you can be proud to stand behind. Learn alongside exceptional people Work with a high-caliber, collaborative team of engineers, scientists, and operators who care deeply about doing great work, and about helping each other get better. We come from diverse backgrounds, but we share a commitment to operating at the highest level and addressing some of the most complex challenges out there. If you’re ambitious, thoughtful, and driven by impact, you’ll feel at home. Influence over hierarchy We operate with a flat structure: good ideas win - wherever they come from. Questioning assumptions and challenging the status quo isn’t just welcomed, it’s expected. Sustainable pace, long-term ambition Building meaningful technology is a marathon, not a sprint. We believe in balancing focused, ambitious work with a life beyond it. Our hybrid model blends time together in our Shoreditch office with work-from-home days, giving you the flexibility to work sustainably while staying connected in person. And it doesn’t stop there … 🚀 Equity options - share meaningfully in the company you’re helping to build. 🏦 10% employer pension contribution - because investing in future matters. 🍽️ Free office lunches - to keep you energised and focused. 👶 Enhanced parental leave - 3 months full pay paternity and 6 months full pay maternity leave, to provide extra flexibility during the moments that matter most. 🍼 YellowNest nursery scheme - to help working parents manage childcare costs. ☀️ 25 days of Annual Leave (+ Public Holidays) - because taking time to rest matters. 🏥 Private medical insurance - 100% employee cover, giving you complete peace of mind. 💪 Wellhub Subscription - gain access to thousands of gyms, classes and wellness apps, supporting both physical and mental wellbeing. 👀 Eye tests - because good work depends on good health. 📈 Personal development - dedicated support for learning, development, and leveling up over time. 💛 Employee Assistance Programme (EAP) - confidential wellbeing support, available whenever you need it. 🚲 Bike2Work scheme and 🚆 Season ticket loan - to make getting to work easier and greener. 🚗 Octopus EV salary sacrifice - for a simpler, more sustainable way to drive electric. 🔎 Watch this space, we’re continuing to build this as we grow…   We value diversity and are committed to equal employment opportunity regardless of sex, race, religion, ethnicity, nationality, disability, age, sexual orientation or gender identity. We strongly encourage individuals from groups traditionally underrepresented in tech to apply. To help make a change, we sponsor bright women from disadvantaged backgrounds through their university degrees in science and mathematics.    We collect diversity and inclusion data solely for the purpose of monitoring the effectiveness of our equal opportunities policies and ensuring compliance with UK employment and equality legislation. This information is confidential, used only in aggregate form, and will not influence the outcome of your application.