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- Tasks: Build and secure cutting-edge GPU clusters for national security workloads.
- Company: Join a top-tier national security team focused on HPC.
- Benefits: Competitive freelance contract with potential long-term extensions.
- Why this job: Make a real impact on national security through advanced computing.
- Qualifications: Expertise in HPC, cyber security, and Linux required.
- Other info: Work in a dynamic environment with opportunities for growth.
The predicted salary is between 48000 - 72000 £ per year.
Employment Type: Contract (Freelance)
Clearance Required: SC-Cleared OR DV-Cleared (preferred)
Duration: 12 months initial → 2‐3‐year extensions already budgeted
Start Date: ASAP
Location: United Kingdom
Role Summary: This is a "Tier 1" National Security High‐Performance Computing (HPC) Contract. Build, optimise and performance‐tune exascale‐class GPU clusters that run the country's most sensitive workloads (think cryptanalysis, nuclear stockpile modelling, real‐time ISR processing, and sovereign AI training). Lock those same systems down to the strictest UK government security standards so they survive and remain auditable in a full zero‐trust, high‐side environment, doing it all on hardened Linux at extreme scale.
IMPORTANT: This is not a "Linux admin with some CUDA experience" role. This is not a "Cyber analyst who once logged into a cluster" role. This role is for UK‐Cleared SMEs who have had experiences at the intersection of raw High‐Performance Computing (HPC), deep Linux systems mastery, and genuine National‐Security‐grade Cyber Defence.
Day‐to‐day you will:
- Profile and refactor classified codes to hit 85–95 % of roofline on H100/H200/B100 and MI300X/MI350 GPUs.
- Design and enforce security controls that survive NCSC penetration tests at supercomputing scale.
- Write or approve the actual SELinux policies, audit rules, and secure boot configurations that get deployed across thousands of nodes.
- Lead incident response and forensic analysis if (when) something anomalous appears on a high‐side cluster.
- Automate secure DevSecOps pipelines that work behind cross‐domain guards and data diodes.
- Brief 1–4‐star officers and SCS/SES civilians on performance gains, risk posture, and future roadmap.
- Influence multi‐billion‐pound future procurements (you will see the requirements documents before most of industry does).
- Explain (in plain English) why your latest kernel patch or CUDA kernel optimisation just delivered a 38 % real‐world speedup on a workload that directly affects national security outcomes.
- Prove that the system is still fully compliant with NCSC CPF and JSP 604.
Active UK SC or DV Clearance (DV‐Cleared Preferred). Proven overlap of High‐Performance Computing + Cyber Security + Linux. Ability to work onsite 3–4 days/week in secure facilities.
High‐Performance Computing (HPC): Large‐scale GPU/CPU cluster optimisation (SLURM, PBS Pro, Bright Cluster Manager, NVIDIA Base Command). Code tuning with CUDA, HIP/ROCm, SYCL, Kokkos, OpenMP 5.x+ offload, MPI. Delivering >80–90 % of theoretical peak on classified workloads.
Cyber Security: Hardening HPC environments to NCSC CPF, JSP 604, HMG IA standards. Zero‐trust implementation, STIGs, CIS benchmarks, secure boot, audit at supercomputing scale. Vulnerability management and secure patching strategies in air‐gapped networks. Expert‐level RHEL 8/9, AlmaLinux, Rocky or hardened Ubuntu in restricted environments. Kernel tuning, filesystems (Lustre, GPFS, BeeGFS), security‐enhanced Linux (SELinux mandatory profiles). Secure containerisation with Apptainer/Singularity on high‐side networks.
Highly Desirable (fast‐tracks you to interview): Active DV Strap or Enhanced Developed Vetting. Recent/relevant experience at Raytheon, DSTL, GCHQ, NCSC, Porton Down, Boscombe Down or relevant programmes. Certifications: CISSP, CISM, CCP (any level), RHCE, CompTIA Security+. Background in cryptanalysis, hydrocodes, SAR processing or large‐scale secure AI training.
Next Steps: If interested, please send your most recent CV to my email so that we can speak in more detail. I will put a 15‐minute meeting into our diaries as a reminder. Feel free to suggest a different time/day if the one I have selected does not suit you.
High-Performance Computing (HPC) Security Engineer in London employer: iO Associates
Contact Detail:
iO Associates Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land High-Performance Computing (HPC) Security Engineer in London
✨Tip Number 1
Network like a pro! Attend industry events, meetups, or online webinars related to HPC and Cyber Security. Connecting with professionals in the field can lead to job opportunities that aren't even advertised yet.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your HPC projects, security implementations, or any relevant work. This gives potential employers a tangible look at what you can do beyond just a CV.
✨Tip Number 3
Prepare for interviews by brushing up on technical questions specific to HPC and Cyber Security. Practice explaining complex concepts in simple terms, as you'll need to communicate effectively with both technical and non-technical stakeholders.
✨Tip Number 4
Don't forget to apply through our website! We often have exclusive listings and can help you get noticed by the right people. Plus, it’s a great way to stay updated on new opportunities tailored to your skills.
We think you need these skills to ace High-Performance Computing (HPC) Security Engineer in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience in High-Performance Computing and Cyber Security. We want to see how your skills align with the specific requirements of the role, so don’t be shy about showcasing your relevant projects and achievements!
Showcase Your Technical Skills: This role is all about deep Linux systems mastery and HPC expertise. Be sure to include any specific technologies or tools you've worked with, like CUDA or SELinux policies. We love seeing concrete examples of your technical prowess!
Keep It Clear and Concise: While we appreciate detail, clarity is key! Use straightforward language to explain your experiences and avoid jargon that might confuse us. Remember, we want to understand your impact and contributions easily.
Apply Through Our Website: We encourage you to apply directly through our website for a smoother process. It helps us keep track of applications better and ensures you’re considered for the role as quickly as possible. Don’t miss out!
How to prepare for a job interview at iO Associates
✨Know Your HPC Inside Out
Make sure you brush up on your High-Performance Computing knowledge. Understand the latest GPU technologies and how they apply to security. Be ready to discuss specific projects where you've optimised or secured HPC environments.
✨Demonstrate Security Expertise
Prepare to talk about your experience with security protocols, especially in relation to NCSC standards. Have examples ready of how you've implemented zero-trust architectures or hardening techniques in previous roles.
✨Speak Their Language
Use the terminology from the job description during your interview. Whether it's SELinux policies or secure DevSecOps pipelines, showing that you're fluent in their language will help you connect with the interviewers.
✨Showcase Problem-Solving Skills
Be prepared to discuss how you've tackled complex issues in high-stakes environments. Think of scenarios where you led incident response or forensic analysis, and be ready to explain your thought process and outcomes.
