iO Associates - UK/EU

About the Company

Specialising in recruitment across the tech, digital, engineering, and government and defence sectors, iO Associates have extensive experience in securing the best talent to create the products and infrastructure of the future.

Our dedicated team of highly experienced and knowledgeable consultants provide bespoke solutions, working with businesses to find the perfect fit across contract, interim, search, and permanent appointments. We offer end-to-end support, from Statements of Work and IR35 determination processes to full MSP and RPO models.

In today's fast-changing business environment, companies need a recruitment partner who understands. At iO, we host iO Meetups and conferences in the tech and digital sector, working closely with our clients to stay ahead of the curve and connect with top candidates.

As part of Precision Resource Group (PRG), we have been acknowledged for our impressive growth and success, with PRG listed in the 24th annual Sunday Times Virgin Atlantic Fast Track 100 as one of Britain's fastest-growing private companies. We have also been finalists at the Bristol Life Awards 2022 and Business Leader Awards 2022 and were recently ranked in WIRED Consulting's Top 15 Trail Blazers in the South West, recognising our exceptional approach to recruitment.

We are members of the Employers Network For Equality & Inclusion (ENEI), promoting best practices in equality and inclusion in the workplace for our employees, clients, and candidates. We are Disability Confident and members of Programme One, working to tackle workplace inequality for black talent in the recruitment industry.

Listed Jobs

Company Name

iO Associates - UK/EU

Job Title

SC or NATO Cleared Penetration Tester

Job Description

**Job Title:** SC or NATO Cleared Penetration Tester **Role Summary:** Provide expert penetration testing services on a 12‑month remote contract. Deliver web application, IT infrastructure, and network security assessments, design secure architectures, and produce detailed remediation reports in alignment with NATO and UK security standards. **Expectations:** - Minimum 3 years of hands‑on experience in penetration testing and security architecture. - Maintain SC or NATO security clearance throughout the engagement. - Execute approximately two sprints per month, delivering comprehensive reports and actionable recommendations. - Communicate findings with both military and civilian stakeholders. **Key Responsibilities:** - Conduct web application penetration tests using industry‑accepted frameworks (e.g., OWASP, NIST). - Perform IT infrastructure and network penetration tests, identifying vulnerabilities in OS, software, protocols, and network devices. - Design and validate secure network architectures, applying best‑practice controls. - Administer UNIX and Windows systems to facilitate testing and remedial actions. - Utilize a range of penetration testing tools and methodologies; script automation in Python, Go, PowerShell, or Bash as required. - Analyze risks, prioritise vulnerabilities, and produce clear, concise reports for technical and non‑technical audiences. - Liaise with multinational teams, ensuring compliance with NATO operating procedures and security protocols. **Required Skills:** - Advanced web application and infrastructure penetration testing. - Network security architecture design. - Vulnerability assessment in OS, software, protocols, and networks. - UNIX & Windows system and network administration. - Proficiency with pentesting tools, methodologies, and risk frameworks. - Scripting: Python, Go, PowerShell, Bash, or equivalent. - Strong written and verbal communication in an international environment. **Required Education & Certifications:** - OSCP, OSCE, OSWE, GPEN, CREST Certified Web Application Tester (CWAT), GXPN, GWAPT or equivalent. - Familiarity with risk analysis methodologies. - Knowledge of NATO organisational structure and related security requirements. - Current SC or NATO security clearance.

England, United kingdom

On site

Junior

24-11-2025

Company Name

iO Associates - UK/EU

Job Title

High-Performance Computing (HPC) Security Engineer

Job Description

**Job Title:** High-Performance Computing (HPC) Security Engineer **Role Summary:** Contract role delivering end‑to‑end performance, optimisation, and hardening of exascale‑class GPU clusters for national‑security workloads. Works at the intersection of HPC, advanced Linux system architecture, and government‑grade cyber defence to achieve PCI‑level zero‑trust environments on large GPU/CPU deployments. **Expectations:** - UK SC or DV clearance (DV preferred). - Minimum 12‑month contract with potential 2‑3 year extensions. - Availability onsite 3‑4 days per week in secure facilities. - Experience with classified or high‑side UK government systems. **Key Responsibilities:** 1. Profile and refactor classified code to achieve 85‑95 % of roofline on H100/H200/B100 and MI300X/MI350 GPUs. 2. Design and enforce NCSC penetration‑test‑resilient security controls for supercomputing scale. 3. Author/approve SELinux policies, audit rules, and secure‑boot configurations for thousands of nodes. 4. Lead incident response and forensic analysis on high‑side clusters. 5. Automate secure DevSecOps pipelines across cross‑domain guards and data diodes. 6. Brief senior officers and civilians on performance metrics, risk posture, and strategic procurement. 7. Demonstrate compliance with NCSC CPF, JSP 604 and HMG IA standards. **Required Skills:** - **HPC/Cluster Optimisation:** SLURM, PBS Pro, Bright Cluster Manager; GPU/CPU tuning with CUDA, HIP/ROCm, SYCL, Kokkos, OpenMP 5.x+, MPI; >80‑90 % peak utilisation. - **Cyber‑Security Hardening:** NCSC CPF, JSP 604, HMG IA, zero‑trust, STIGs, CIS benchmarks; secure boot; audit‑level logging. - **Linux Mastery:** RHEL 8/9, AlmaLinux, Rocky, hardened Ubuntu; kernel tuning; Lustre/GPFS/BeeGFS; SELinux mandatory access controls; Apptainer/Singularity containerisation on high‑side networks. - **Vulnerability Management:** Air‑gapped patching, secure patching strategies, threat analysis. - **Software & Tools:** Python, Bash, YAML, CI/CD (GitLab CI, Jenkins), Ansible, Terraform. - **Communication:** Translate technical performance gains into plain‑English for senior stakeholders. **Required Education & Certifications:** - Bachelor’s degree in Computer Science, Electrical Engineering, or related field (preferred). - Certifications: CISSP, CISM, CCP (any level), RHCE, CompTIA Security+. - Experience with government or defence agencies (e.g., Raytheon, DSTL, GCHQ, NCSC) is fast‑track. ---

England, United kingdom

On site

24-11-2025

Company Name

iO Associates - UK/EU

Job Title

SC Cleared Senior Python Engineer (Contract)

Job Description

**Job title** SC Cleared Senior Python Engineer (Contract) **Role Summary** Lead the design, development, and delivery of production‑grade data transformation services for a major government data platform. Drive architectural decisions, uphold high‑quality engineering standards, and collaborate across cross‑functional teams in an Agile environment. **Expectations** - Minimum 6 years of engineering experience delivering production digital services. - Must possess an active Secret Clearance (SC). - Proven track record leading teams or large initiatives, preferably within a public‑sector or government setting. - Flexibility to work hybrid (2 days onsite) for a 12‑month contract. **Key Responsibilities** - Architect, develop, and maintain scalable data transformation pipelines and open‑data services. - Write clean, testable Python code and apply best practices in version control (Git). - Employ Agile methodologies to prioritize backlogs, plan sprints, and deliver increments. - Containerize services with Docker and orchestrate using Kubernetes; manage deployments on a major cloud provider. - Mentor junior engineers and influence the technical roadmap and future direction of the platform. - Ensure compliance with government security and data handling standards. **Required Skills** - Strong proficiency in Python; experience with Ruby is an advantage. - Experience designing and operating data platforms or open‑data services. - Knowledge of Git, Agile frameworks (Scrum/Scrumban), Docker, Kubernetes. - Cloud deployment expertise (AWS, Azure, or GCP). - Familiarity with government or civil‑service delivery processes and security requirements. **Required Education & Certifications** - Active Secret Clearance (SC). - Relevant engineering or computer‑science degree preferred (not mandatory).

London, United kingdom

Hybrid

Senior

27-11-2025

Company Name

iO Associates - UK/EU

Job Title

SC Cleared Golang Developer (Contract)

Job Description

**Job Title:** SC Cleared Golang Developer (Contract) **Role Summary:** Contract Go developer supporting a major UK Government department on a 6‑month project. Work primarily remotely with occasional onsite presence, delivering secure, high‑performance services using Agile practices. **Expectations:** - 6‑month contract (extendable) - 2 days onsite per month in London - Day rate £600 (Inside IR35) - Maintain active Security Clearance (SC) **Key Responsibilities:** - Design, develop, test, and maintain microservices in Go. - Collaborate with cross‑functional Agile teams (Scrum/CI). - Build and maintain CI/CD pipelines (Git, Go, Docker, Kubernetes). - Implement automated tests (TDD/BDD) and monitor code quality. - Ensure compliance with security and regulatory standards for government workloads. - Work with cloud platforms (AWS, Azure, or GCP) to deploy and scale services. - Participate in security reviews, incident response, and documentation. - Mentor junior developers and share best practices. **Required Skills:** - 3+ years of commercial Go development experience. - Proficiency in Go modules, testing frameworks, and concurrency patterns. - Agile methodology experience (Scrum, Kanban). - Hands‑on with Docker, Kubernetes, and cloud IaC (Terraform/CloudFormation). - Strong CI/CD experience (Jenkins, GitLab CI, GitHub Actions, ArgoCD). - Familiarity with TDD/BDD and automated testing tools (GoTest, Ginkgo). - Understanding of secure coding practices, threat modelling, and data protection. - Excellent communication and teamwork skills. **Required Education & Certifications:** - BS/BA in Computer Science, Software Engineering, or related field (or equivalent professional experience). - Active SC Security Clearance (required). ---

London, United kingdom

Hybrid

27-11-2025