Computer Network Defence Ltd (CND)

About the Company

Computer Network Defence Ltd are a UK based cyber security consultancy with an extremely broad spectrum of capability. Our highly experienced cyber security staff are supported by our in-house cyber security recruitment division, ensuring availability and specialist skills through an extensive associate pool. We pride ourselves on being deeply technical and providing innovative solutions to our clients with great agility. Consultancy We specialise in delivering cyber security solutions into secure environments in both the Public and Private Sector. Our background is building, manning and operating Security Operations Centres. From this strong foundation we expanded our range of information security functions to include a broad spectrum from penetration testing through to defence in depth security architecture. Recruitment Our ethical, personable and dedicated approach to business has resulted in a reputation for excellence. This combined with our inhouse technical, consultancy and recruitment expertise ensures an unrivalled understanding of candidate and client requirements. Armed with our strong belief in 'quality over quantity' our candidates and clients are all screened, tested and referenced to ensure an unrivalled ratio of 'candidate submissions to offers'. The Radar The Radar Page was designed and built by CND to meet the demands of Government and Military networks back in the early 2000s. It provides near real time information on new and emerging cyber threats. It's public availability and lack of corporate identity has resulted in almost every industry, taking advantage of it either on an occasional basis or full time. The page auto updates every 20 minutes drawing information from multiple sources.

Listed Jobs

Company Name

Computer Network Defence Ltd (CND)

Job Title

Security Operations Centre Analyst (Contract)

Job Description

Job Title: Security Operations Centre Analyst (Contract) Role Summary: Provide round‑the‑clock threat detection, investigation, and response support as part of a SOC team. Analyze SIEM alerts, identify incidents, develop escalation pathways, and improve monitoring processes. Interface with stakeholders, consult clients on security posture, and lead junior analysts. Expectations: * Contract – rate negotiable, IR35 applied. * Shift pattern day/night, 5 days off and at least 2 weekends off monthly. * UK nationals only; current valid SC clearance mandatory. Key Responsibilities: * Review and triage SIEM alerts (ArcSight, Splunk, LogRhythm, AlienVault). * Conduct detailed investigations, documenting findings and recommending containment/action. * Serve as escalation point for junior staff, leading incident resolution. * Develop and refine SOC playbooks, processes, and procedures. * Propose and implement enhancements to monitoring and internal security posture. * Engage across technical/non‑technical stakeholders to translate findings into actionable guidance. * Support on‑site client engagements as required, balancing remote/onsite duties. Required Skills: * Proven experience with SIEM platforms (ArcSight, Splunk, LogRhythm, AlienVault). * Ability to optimize tool usage and extract meaningful intelligence. * Strong investigative and incident‑response skills. * Comfortable leading junior analysts and escalating incidents. * Familiarity with SOC process and playbook development. * Excellent communication across varied technical audiences. Required Education & Certifications: * Current UK Security Clearance: Security Check (SC). * Minimum relevant IT or cybersecurity qualification (e.g., BSc IT, CompTIA Security+, CEH) – preferred but not mandatory.

Andover, United kingdom

On site

30-10-2025

Company Name

Computer Network Defence Ltd (CND)

Job Title

Penetration Tester (CHECK)

Job Description

Job title: Penetration Tester (CHECK) Role Summary: Conduct penetration tests at CHECK level across infrastructure, application, mobile, Active Directory, and cloud environments, delivering technical input to sales and producing detailed, actionable reports for clients. Expactations: Possess a CHECK equivalent certification and current SC/DV clearance (or eligibility). Experienced with Linux and Windows platforms, capable of using established PT tools, scripting in Bash or Python, and familiar with cloud services (Azure/AWS). Key Responsibilities: - Execute penetration testing engagements aligned with CHECK standards. - Perform supplementary non-CHECK testing when required. - Collaborate with sales to define technical scopes and requirements. - Produce comprehensive, client‑ready reports highlighting findings and remediation guidance. - Keep abreast of emerging attack vectors, industry trends, and latest testing methodologies. - Apply a broad testing approach covering infrastructure, application, mobile, AD, and cloud targets. Required Skills: - CHECK-equivalent security certification. - Valid SC/DV clearance or eligibility to obtain. - Proficiency in Linux and Windows OS environments. - Strong command of mainstream penetration testing tools (e.g., Metasploit, Nmap, Burp Suite). - Scripting or programming in Bash, Python, or equivalent. - Knowledge of cloud platforms (Azure, AWS) and associated security controls. - Understanding of cybersecurity standards (ISO27001, PCI‑DSS, CIS). Required Education & Certifications: - CHECK certification or equivalent (e.g., Check Point Certified Professional). - Security certifications such as OSCP, CEH, or equivalent are desirable. - Current SC/DV security clearance (or eligibility).

Cheltenham, United kingdom

Hybrid

03-12-2025

Company Name

Computer Network Defence Ltd (CND)

Job Title

Software Developer

Job Description

**Job title**: Software Developer **Role Summary**: Support a highly collaborative, agile development team by writing, reviewing, and maintaining code in a pair‑programming environment. Design and implement solutions that enhance product quality and user experience while actively participating in sprint planning and continuous improvement activities. **Expectations**: - Deliver high‑quality software in a fast‑moving, Scrum‑based workflow. - Actively engage in peer reviews, architectural discussions and knowledge sharing. - Communicate clearly with product owners, account managers, and operations teams. - Pursue professional growth and embrace new learning opportunities. **Key Responsibilities**: 1. Participate in pair programming, whiteboarding, and joint architecture design activities. 2. Write clean, maintainable code and ensure every change is peer‑reviewed. 3. Collaborate with cross‑functional teams to deliver customer‑focused features and maintain system stability. 4. Engage in sprint planning, backlog refinement, and sprint reviews to drive value. 5. Contribute to continuous learning initiatives, workshops, and code standards. **Required Skills**: - Commercial experience with modern programming languages such as PHP, JavaScript, or React. - Strong understanding of MVC or modern JavaScript frameworks. - Proficiency with Git and collaborative coding practices. - Excellent verbal and written communication skills. - Self‑motivated, eager to learn, and adaptable to changing priorities. **Bonus Skills**: - Knowledge of accessibility standards (WCAG, ARIA). - Experience with automated testing frameworks (Jest, PHPUnit, etc.). - Familiarity with software design best practices and patterns. **Required Education & Certifications**: - Bachelor’s degree in Computer Science, Software Engineering, or a related field, or equivalent professional experience.

Somerset, United kingdom

Hybrid

18-12-2025