76 to 100 of 126 Penetration Tester Jobs in the UK

Dragos is seeking an Associate Principal OT Penetration Tester to lead vulnerability assessments, penetration testing, and adversary emulation for critical infrastructure clients. You will shape engagement strategy, uncover attack paths across IT/OT boundaries, and mentor teams while guiding R&D on tools and detection content. ...

Ready to identify vulnerabilities before attackers do? Join a cybersecurity services provider recognised for delivering penetration testing, advisory, and compliance solutions to enterprises. With a reputation for technical expertise and trusted delivery, the organisation continues to help businesses strengthen resilience and protect critical systems against evolving threats. The team … hiring a Penetration Tester to conduct security assessments across applications, networks, and infrastructure. The role will focus on simulating real-world attacks, identifying weaknesses, and providing actionable recommendations to improve overall security posture. Turn offensive skills into defensive strength. Apply now! Responsibilities Conduct hands-on penetration testing ...

consultancy firm in London is looking for a Senior Penetration Tester to join their team. The role involves performing high-standard penetration tests, managing and mentoring security consultants, and producing timely reports. Ideal candidates will have at least 3 years of experience in Information Security and Penetration ...

This is a fantastic opportunity for an experienced penetration tester to move into an internal role with a leading financial services firm. The role offers variety across Penetration Testing (WebApp, Infrastructure – internal and external, and Cloud) along with involvement in Purple Teaming and Red Teaming engagements. ...

team shaping the future of cybersecurity and technology. Salary: Up to £45,000 per annum. Travel: Hybrid Location: London We're hiring a passionate Penetration Tester eager to grow in offensive security. Join a skilled, diverse team committed to innovation and technical excellence. This is a great opportunity ...

Guideposts Trust Limited is seeking a skilled Penetration Tester to join our expanding team in the United Kingdom. The role focuses on manual penetration testing across multiple disciplines, with reporting to a high standard and clear communication to non-technical audiences. We require a minimum … years’ experience in penetration testing, along with a relevant degree in cyber security or related field. Some travel to client sites will be necessary. #J-18808-Ljbffr ...

Dragos is seeking an Associate Principal OT Penetration Tester to lead complex vulnerability assessments and penetration testing across critical infrastructure clients. You will shape engagement strategy, perform hands‐on exploitation, and translate findings into remediation guidance that informs detection and platform development. You will mentor teams, engage ...

cybersecurity services provider is seeking a Penetration Tester to conduct security assessments across various clients. The role offers flexibility to work remotely or from the Sheffield office, and the ideal candidate will have 2-4 years of experience, a CREST certification, and strong communication skills. You'll help … build a Penetration Testing team and contribute to the growth of the business. #J-18808-Ljbffr ...

Ethical Hacker/Penetration Tester no experience needed From £45,000 - £6 5,000 This is a self-funded career programme with a guaranteed job on completion or 100% of your course fees back Train. Certify. Get Hired. Are you looking to start a career in Cyber Security ...

Ethical Hacker/Penetration Tester – no experience needed From £45,000 - £6 5,000 *This is a self-funded career programme with a guaranteed job on completion or 100% of your course fees back* Train. Certify. Get Hired. Are you looking to start a career in Cyber Security ...

Ethical Hacker/Penetration Tester – no experience needed From £45,000 - £6 5,000 *This is a self-funded career programme with a guaranteed job on completion or 100% of your course fees back* Train. Certify. Get Hired. Are you looking to start a career in Cyber Security ...

Ethical Hacker/Penetration Tester – no experience needed From £45,000 - £6 5,000 *This is a self-funded career programme with a guaranteed job on completion or 100% of your course fees back* Train. Certify. Get Hired. Are you looking to start a career in Cyber Security ...

leading cybersecurity firm in London is seeking a passionate Penetration Tester to enhance their offensive security team. You will support cloud and infrastructure security assessments, write detailed reports for various stakeholders, and collaborate with a diverse team. Candidates must hold an OSCP certification and have knowledge ...

Accountants & Business Advisors Ltd is seeking a Lead Penetration Tester with 5+ years of experience to lead client engagements and advance our Cyber Security practice. You will oversee penetration testing across infrastructure, web apps and cloud, deliver assessments and high-quality reports, and mentor junior consultants. ...

London Stock Exchange Group (LSEG) seeks a Senior Penetration Tester to join our internal offensive security team. This hands-on, highly technical role plans and executes penetration tests across systems and applications, uncovering vulnerabilities and raising security standards. You will own engagements end-to-end, write technical ...

Lloyds Banking Group is seeking a Penetration Tester to join our Security Testing team in a hybrid role across multiple UK sites, including Manchester. You will plan, execute and report on offensive security testing across diverse platforms, while developing expertise within a large, regulated financial services environment. ...

Moore Kingston Smith is seeking an experienced penetration tester to join our NCSC-recognised cyber security team within our Risk Advisory practice, supporting a diverse portfolio of clients across multiple sectors. This hands-on role focuses on delivering penetration tests across web apps, APIs, and network infrastructure ...

Dionach by Nomios in the UK is seeking an experienced penetration tester to conduct tests across web apps, APIs, Cloud, and networks, delivering detailed findings and remediation guidance. The role requires at least two years in pentesting, certifications such as CREST/OSCP, and the ability to communicate ...

Hamilton Barnes is seeking a Senior Penetration Tester to perform hands-on testing across infrastructure, networks, web applications and APIs for varied client environments. The role emphasizes contributing to an offensive security function rather than sole test delivery. You will deliver tests, identify vulnerabilities, and produce detailed client ...

Consult is actively seeking an experienced Senior/Lead Penetration Tester & Cyber Security Consultant to support security testing across cloud, infrastructure, and modern applications in a fully remote capacity for the United Kingdom. The role emphasizes hands-on testing in AWS/Azure cloud environments, Docker/Kubernetes ...

Research is seeking a hands-on Penetration Tester to lead tests and vulnerability assessments across internal systems and security controls. Your work will strengthen our security posture through continuous testing and remediation collaboration. You will perform tests across Kubernetes, Jenkins and Windows Domain Services, deliver remediation guidance, mentor ...

Moore Kingston Smith LLP is seeking an experienced Penetration Tester to join our NCSC-recognised cyber security team within Risk Advisory, supporting clients across multiple sectors. The role focuses on hands-on testing of web applications, APIs, and network infrastructure, with involvement in Cyber Essentials Plus and broader ...

Barclay Simpson is seeking an internal Penetration Tester to work on WebApp, Infrastructure (internal and external), and Cloud testing. You will carry out annual perimeter tests, engage in project work, and perform peer reviews of reports. You will communicate findings to senior stakeholders in the business and work ...

Secure Consult is seeking a Senior Penetration Tester with CHECK Team Lead expertise for a two-year contract based in Taunton. The role is hybrid but heavy on site, requiring approx. 110 days on client premises annually. You will lead offensive security assessments across infrastructure and web applications ...

Accenture PLC is seeking a Cyber Security Penetration Tester to perform hands-on security testing of client web applications, APIs and infrastructure across the UK. You will work within a collaborative testing team, guided by senior testers and CHECK Team Leaders on complex engagements, delivering clear remediation advice. … This role suits an early-career tester looking to broaden technical skills and pursue recognised industry certifications while working in a hybrid model (1 day a month in the #J-18808-Ljbffr ...