Security Testing Consultant

As a Security Testing Consultant (SC), you will deliver end-to-end security testing engagements for a wide range of secure clients. The Security Testing Consultant (SC) will conduct hands-on testing across applications, infrastructure, and emerging technologies, while producing high-quality reporting for both technical and non-technical stakeholders.

You will be part of a global Cyber Technical Services team, collaborating closely with Threat Intelligence and Incident Response specialists across National Security and Defence programmes.

What You'll Be Doing as a Security Testing Consultant (SC)

• Deliver end-to-end security testing engagements, including scoping and client wash-up sessions
• Perform web, mobile, application, infrastructure, objective-based, and intelligence-led testing
• Produce clear, detailed reports and presentations for technical and non-technical audiences
• Use security testing tools safely and responsibly, ensuring risk controls are always in place
• Develop and improve scripts, tools, and techniques to enhance testing capability
• Share knowledge and collaborate with colleagues across cyber, threat intelligence, and incident response teams
• Support testing across National Security, Defence, and Critical Infrastructure environments

• Proven experience working as a Security Testing Consultant (SC) or penetration tester
• Strong practical knowledge of security testing tools, techniques, and methodologies
• Ability to understand client risk, testing objectives, and stakeholder needs
• Self-starter with the ability to identify issues early and drive solutions independently
• Experience working to tight deadlines and managing multiple priorities
• Technical interest or experience in areas such as adversary emulation, vulnerability research, reverse engineering, or emerging technologies
• Willingness to travel within the UK and internationally
• Current CHECK Team Member or equivalent certification (e.g. OSCP), or able to reach this level within 3 months

Desirable Skills

• Scripting or development experience (Python, C/C++, ASM, or similar)
• Background in application, OS, database, or security operations
• Experience delivering testing within Government, Telecommunications, Energy, or Financial Services sectors
• Exploit development or advanced vulnerability research experience, * Candidates must be eligible to obtain SC, including meeting UK residency and nationality requirements

• Work on high-impact National Security and Defence engagements
• Join a recognised, award-winning cyber security organisation
• Remote-first role with flexible working and international exposure
• Be part of a respected global cyber community
• Access ongoing training, certification support, and career progression
• Competitive benefits package including pension, wellbeing, and lifestyle benefits

Join an award-winning organisation recognised for excellence in cyber security delivery, employee wellbeing, and inclusive workplace culture. Our client is widely respected for operating at the forefront of National Security, Defence, and Critical Infrastructure programmes - delivering trusted cyber services in the most demanding and sensitive environments.