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Penetration Tester (CHECK Team Member). Penetration Tester (CHECK Team Member). Deliver high-quality penetration tests and vulnerability assessments.

Senior Information Security Tester / Senior Penetration Tester. This is a highly visible, hybrid role combining hands-on penetration testing with strategic input, stakeholder engagement, and mentoring responsibilities. API, and infrastructure penetration testing.

Assessments & Exercises Vice President in Penetration Test. In this key role, you will enhance the firm's cybersecurity through hands-on penetration testing and risk assessment methodologies. Ideal candidates are eager learners with strong communication skills, and experience in manual penetration t

A premier consulting firm in London is seeking a skilled penetration tester. The ideal candidate will possess certifications like OSCP or CREST and experience in various penetration testing fields.

Being the Lead Penetration Tester on a wide portfolio of penetration testing engagements including complex CHECK engagements and ITHCs as well as large projects for our key clients. B Data Security (part of UBDS Group) is seeking a skilled and experienced Senior Penetration Tester to provide excepti

UBDS Group is seeking a skilled Senior Penetration Tester to lead CHECK engagements and mentor junior team members. You will drive high-quality service delivery and maintain CHECK Green status while managing a wide portfolio of penetration testing assignments, including both infrastructure and appli

Would be nice have CREST Registered Penetration Tester (CRT). Offensive Security Tester / REMOTE. Offensive Security Tester | UK-Based (Remote Options).

Familiarity with penetration testing tools such as BurpSuite, OWASP Zap, SoapUI etc. Penetration testing experience with Internet of Things (IoT) devices, mobile applications, or code review. Capital One Offensive Security reduces cyber risk by uncovering vulnerabilities and weaknesses in the enterp

Capgemini is seeking a skilled Penetration Tester within its Cybersecurity Practice in the UK. This role involves identifying and managing security risks for clients by conducting detailed penetration assessments. Candidates should be CTM certified and possess a strong grasp of penetration testing t

Paragon are working with a systematic hedge fund, looking for an experienced Penetration Tester to join their internal security team. Scope: performing hands‑on penetration testing, running adversary simulations, and helping engineers understand how attackers actually think. Strong penetration tes

Bridewell is seeking an experienced Senior Penetration Tester to deliver high-quality security assessments and work on exciting projects.

Capital One Offensive Security reduces cyber risk by uncovering vulnerabilities and weaknesses in the enterprise cyber environment through coordinated ethical hacking and penetration testing scenarios. Perform penetration testing of APIs, web applications, networks, and cloud services, as well as re

FSP is seeking a skilled Senior Penetration Tester to join their Cyber Security practice in Greater London. The ideal candidate will have at least 2 years of experience in penetration testing or vulnerability research, and be proficient in programming languages like C/C++, C#, Java, and Python.

As an experienced Penetration Tester at Starling, you’ll be joining an established team, working with talented cyber security professionals to ensure our services are designed, developed and operated securely. Being an internal tester, you’ll gain a strong understanding of how technology works a

Pen Test Partners LLP is seeking an enthusiastic security consultant to join their team in the UK.This role includes delivering pen testing services for various clients, from presales to delivery and debriefs.Applicants should have a minimum of two years' experience in pen testing and be familiar wi

Security testing professionals, including penetration testers and security analysts, are responsible for identifying, analyzing, and mitigating vulnerabilities in software, systems, and networks.

A-LIGN in Greater London is looking for a skilled Penetration Tester to execute high-quality security assessments for diverse clients. A qualification in cybersecurity and at least 2 years of experience in penetration testing are essential. You will perform various penetration tests and guarantee th

As a penetration tester in our CTAS team you’ll play a vital role in helping our clients detect, understand and manage their security risks. Your roleBeing certified as a CHECK Team Member (CTM) is a prerequisite to joining our CTAS team as a penetration tester. As a member of this team, you’ll

A cybersecurity firm in Greater London seeks a Penetration Tester to plan and conduct ethical hacking exercises and identify vulnerabilities in systems.

Alignerr is seeking an experienced AI Penetration Tester to conduct security assessments on AI applications and infrastructure. The ideal candidate will have extensive experience in penetration testing, strong knowledge of offensive security principles, and proficiency in tools like Burp Suite and K

Bridewell Consulting Limited is seeking an experienced Senior Penetration Tester in the UK to deliver high-quality penetration testing across various client projects.

Digital Safety Penetration Tester (16997). As a Digital Safety Penetration Tester you will perform hands‑on ethical hacking engagements across applications, APIs, infrastructure and cloud environments. Familiarity with industry‑standard penetration testing tools, frameworks and methodologies inc

Thames Water is seeking a Security Penetration Tester based in the United Kingdom. You will develop the penetration testing function and conduct extensive security assessments across systems.

As a result of growth, we are looking for an experienced Senior Penetration Tester with solid experience of infrastructure and web application testing to deliver testing engagements on a range of key client work. This is an excellent opportunity for a highly motivated and determined Penetration Test

A leading information security company in the UK is seeking an experienced penetration tester. This role involves conducting comprehensive penetration tests on various environments, including web applications and Cloud services.

A-LIGN External, located in London, is seeking a Penetration Tester to deliver high-quality security assessments for a diverse portfolio of clients. The role involves executing various penetration tests, generating reports, and enhancing client security.

Familiarity with vulnerability assessment and penetration testing techniques. At least 1-2 years of experience in penetration testing. We are on the hunt for an expert in Penetration Testing.

Perform hands‑on penetration testing across hardware, software, and telecoms‑specific technologies to identify vulnerabilities in complex systems. Have a background in infrastructure, networking, or software development and hands‑on penetration testing experience (this is not an entry level ro

We have an exciting opportunity for a Senior Penetration Tester to join our thriving Cyber Security practice. We are seeking a skilled individual, with expertise in penetration testing or vulnerability research, who can contribute to the development of innovative solutions and security outcomes to s

Barclay Simpson is seeking an experienced Penetration Tester to join their team in Greater London.

A-LIGN will depend on you as the Penetration Tester to support management, plan and execute sophisticated penetration tests, and ensure the ongoing protection of our clients’ most critical systems and data. The Penetration Tester works to execute department activities and deliver high-quality secu

Capital One is seeking a Penetration Tester to reduce cyber risk through ethical hacking and security assessments. This position involves performing penetration testing for applications and networks, enhancing security standards, and collaborating with development teams.

La Fosse, a leading quantitative investment management firm in Greater London, seeks a Penetration Tester for its Security Assurance team. This senior role involves owning internal penetration testing, identifying security risks across infrastructure and applications, and enhancing the firm's advers

Penetration TesterApplylocations: London, Eng: Nottingham, Engtime type: Full timeposted on: Posted Todayjob requisition id: R235018White Collar Factory (95009), United Kingdom, London, LondonPenetration TesterAbout the roleCapital One Offensive Security reduces cyber risk by uncoverin

Uniting Ambition IT Contract is seeking an experienced Senior Security Penetration Tester to join their Information Security function for an initial 3-month contract. The role involves conducting penetration testing to identify vulnerabilities across networks and applications.

LSEG is seeking a senior penetration tester to join our internal offensive security team. This role is hands‑on and deeply technical, responsible for planning and driving penetration tests across a wide range of systems and applications. Conduct in‑depth penetration tests on applications, infras

A leading cybersecurity consultancy in the UK is seeking a skilled Senior Penetration Tester to join their Cyber Security practice. The role involves leading penetration testing engagements, providing technical advice on security technologies, and contributing to innovative cybersecurity solutions.

Perform hands‑on penetration testing across hardware, software, and telecoms‑specific technologies to identify vulnerabilities in complex systems. Have a background in infrastructure, networking, or software development and hands‑on penetration testing experience (this is not an entry level ro

Being the Lead Penetration Tester on a wide portfolio of penetration testing engagements including complex CHECK engagements and ITHCs as well as large projects for our key clients. B Data Security (part of UBDS Group) are looking for a skilled and experienced Senior Penetration Tester who can provi

Darkshield is seeking an experienced Penetration Tester in York, UK, to conduct security assessments and ethical hacking.

CAPGEMINI is looking for a penetration tester to join their Cybersecurity Practice in the UK. In this role, you will conduct penetration tests to identify and manage security risks for clients, using both manual and automated techniques.

Oscar is seeking a Cyber Security Consultant / Penetration Tester to deliver security testing across various environments. This role involves hands-on penetration testing, identifying vulnerabilities, and providing remediation guidance. The ideal candidate will have SC clearance, experience in penet

Mercor is looking for a Cybersecurity Expert to evaluate AI-generated outputs related to threat analysis and cybersecurity workflows.The role requires 3+ years of experience in cybersecurity, with a focus on SOC analysis and incident response.This is a remote position, offering task-based compensati

The successful candidate will identify and remediate application-layer vulnerabilities and conduct penetration tests while advising development teams on secure coding practices. This role requires strong experience in software engineering or security operations with demonstrated expertise in secure

A-LIGN will depend on you as the Penetration Tester to support management, plan and execute sophisticated penetration tests, and ensure the ongoing protection of our clients’ most critical systems and data. The Penetration Tester works to execute department activities and deliver high-quality secu

Develop and share knowledge with the rest of the penetration testing team. Have developed SME knowledge in one or more fields of penetration testing, such as mobile application testing, Cloud, Operational Technology, or a specific industry/environment such as telecoms, defence, or maritime.

You will be responsible for conducting hands-on penetration testing and mentoring junior team members, all within a collaborative work environment.

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 Re