Latest penetration tester Jobs

Penetration Tester

This role involves conducting comprehensive penetration tests across IT, web applications, and Operational Technology environments, including industrial control systems. The candidate will identify vulnerabilities, produce actionable reports, and collaborate with internal teams and third parties to strengthen security posture. The position offers deep technical engagement with critical infrastructure and opportunities to influence security improvements across high-impact systems.

Yolk Recruitment Cardiff, South Glamorgan, CF10 2AF, United Kingdom £71,000 – £81,000 pa

Hybrid Permanent Clearance Required

Penetration Tester

This role involves conducting comprehensive penetration tests across networks, web and mobile applications, APIs, and cloud environments using both manual and automated techniques. The tester will simulate real-world cyberattacks, identify vulnerabilities, and produce detailed technical and executive reports with actionable remediation advice. A key focus is translating complex security findings for non-technical stakeholders while adhering to strict ethical and compliance standards in a security-cleared context.

SmartSourcing Ltd United Kingdom £60,000 – £80,000 pa

Remote Permanent Clearance Required

Penetration Tester

This role involves conducting comprehensive penetration tests across web applications, APIs, networks, cloud, and mobile platforms, from scoping to client debrief. The candidate will produce detailed technical reports, support client engagement, and contribute to tool development through research on emerging threats. It's a client-facing position requiring strong technical and communication skills within a cybersecurity consultancy environment.

VIQU IT Recruitment London, United Kingdom £60,000 – £65,000 pa

Penetration Tester - CHECK Team Member

Conduct thorough penetration tests on web applications, networks, and IT infrastructure using both manual and automated methods. Translate technical findings into clear, actionable insights for clients and deliver risk-based remediation advice. Work within a collaborative security team while traveling to client sites across the UK as needed.

F5 London, United Kingdom £65,000 – £80,000 pa

Senior Penetration Tester - CTL

Conduct infrastructure and web application penetration tests for clients, contributing to the development of new testing methodologies. Includes dedicated time for research and access to training platforms and certifications to support professional growth.

Bridewell London, United Kingdom

Hybrid Permanent

Junior Penetration Tester

This role involves conducting penetration tests across various applications, with a focus on learning and developing skills in offensive security. The company provides a 6-month training period to help you start your career in this field.

Akkodis London, United Kingdom £25,000 – £30,000 pa

Cyber Security Consultant - Penetration Tester

Conduct penetration testing engagements across network, cloud, and web application environments, delivering technical assessments and client-facing reporting. Work collaboratively within a security team while managing independent projects and supporting client scoping discussions. Focus on identifying and communicating security risks clearly to both technical and non-technical stakeholders.

FlexIT Talent Solutions Ltd London, United Kingdom £65,000 pa

CTL Web Application Penetration Tester (CCT App/CSTL App)

Conduct web application penetration testing as part of a security assessment team, focusing on identifying vulnerabilities in web-based systems. The role may also involve testing mobile applications and infrastructure components, with opportunities to contribute to red teaming exercises. Work is conducted remotely, supporting a boutique organisation in delivering high-assurance security testing.

Akkodis London, United Kingdom

Cyber Security Engineer - Red Team within UK

Design and build offensive security labs and gamified learning content on a cyber resilience platform, simulating real-world red team attacks and AI-driven threats. Research and translate advanced tactics into engaging, practical exercises for technical and non-technical users, while collaborating with product teams to innovate training delivery.

Immersive United Kingdom

Remote Permanent

Cyber Security Engineer

This role involves leading incident response, threat monitoring, and root-cause analysis while optimising SIEM and EDR systems like CrowdStrike Falcon and Microsoft Defender. The engineer will drive vulnerability management, implement Zero Trust principles, and secure cloud infrastructure using tools such as Intune, Entra ID, Palo Alto, and Mimecast. Collaboration with internal teams and penetration testers is key to strengthening the organisation's security posture within a global professional services environment.

Picture More Ec4M5Sb, United Kingdom £70,000 – £77,000 pa

Hybrid Permanent Clearance Required

QA Engineer

This role involves hands-on system, functional, and regression testing of SaaS-based cybersecurity products, with opportunities to contribute to test automation and collaborate across development and product teams. The engineer will identify and validate defects, participate in Agile processes, and help improve quality assurance practices within an agile, security-focused environment. Emphasis is placed on proactive problem-solving, clear communication, and continuous improvement in testing methodologies.

AWD online Rg145Dg, United Kingdom £38,000 – £45,000 pa

Red Team Director

Leads a red teaming function to proactively identify and exploit vulnerabilities in Barclays' IT systems, enhancing cyber resilience through adversary emulation, purple teaming, and real-time collaboration with security operations. Develops offensive security strategy, integrates AI into testing, and strengthens organisational readiness against advanced threats. Works closely with senior stakeholders to influence security investment and control priorities.

Barclays United Kingdom

Security Architect_ Active DV clearance

Design and implement endpoint security solutions and platform controls for air-gapped, offline environments. Develop secure patching, vulnerability management, and data transfer mechanisms while ensuring compliance with UK government security standards including JSP and NCSC guidelines. Produce technical documentation and support penetration testing within highly classified settings.

Randstad Technologies Recruitment Erskine, Renfrewshire, PA8 7AA, United Kingdom £400 – £450 pd

On-site Contract Clearance Required

Cryptography Operations Engineer

This role involves managing cryptographic assets, including encryption keys and HSMs, to ensure data security across enterprise systems. The engineer will monitor, implement, and support cryptographic solutions, conduct security assessments, and contribute to policy and training. Work includes BAU and on-call support within a global 24/7 team, using tools from Thales and Entrust in complex Windows and Linux environments.

Barclays Knutsford, WA16 9EU, United Kingdom

Cyber Security Analyst - Watford

Job specification for the position of: Cyber Security AnalystReporting to: IT Governance and Security Manager***OFFICE BASED IN WATFORD - FIVE DAYS PER WEEK - NON-NEGOTIABLE***Must have a British passport or ILR (Indefinite leave to remain) - ***no sponsorship available***Purpose of...

Morgan Philips Group Watford, Hertfordshire, United Kingdom £55,000 – £60,000 pa