1 to 25 of 31 Senior Penetration Tester Jobs

Senior Cybersecurity Consultant (Penetration Tester) Senior Cybersecurity Consultant (Penetration Tester) Direct message the job poster from Anson McCade Senior Technology Recruitment Consultant A premier UK consultancy is seeking a skilled and passionate Penetration Tester to join its growing team of cybersecurity experts. This is a dynamic opportunity for individuals with strong … proactive mindset, eager to make a tangible impact across a wide range of client environments. Working on mission critical projects across National Security, Critical National Infrastructure and Defence the Senior Penetration Tester will liaise with highly-skilled teams acting as a trusted advisor. Key Responsibilities: Conduct hands-on internal penetration tests in infrastructure/Active Directory … also be available: Possesses industry-recognised certifications such as CTM, CSTM, CTL, CSTL, OSCP, or CREST/Cyber Scheme qualifications. Brings specialist knowledge in one or more areas of penetration testing – this could include mobile app security, cloud environments, operational technology (OT), or specific sectors such as telecommunications, defence, or maritime. Demonstrates a strong desire to contribute to the More ❯

Senior Penetration Tester/Ethical Hacker (C++, C#, PowerShell) 1 day ago Be among the first 25 applicants Key Responsibilities : Conduct advanced penetration testing on web applications, networks, and systems to identify vulnerabilities. Simulate sophisticated cyberattacks using tools and custom scripts to exploit weaknesses. Develop and deploy custom tools, scripts, and exploits to test system resilience. … Collaborate with development and IT teams to remediate vulnerabilities and improve security. Stay up-to-date with the latest attack vectors, vulnerabilities, and penetration testing methodologies. Write detailed reports documenting findings, risks, and remediation recommendations. Mentor junior team members and share knowledge on advanced hacking techniques. Participate in red team/blue team exercises and incident response activities. Required … Skills and Qualifications : Technical Expertise : Expert in C++ , C# , PowerShell , and other scripting/programming languages. Strong knowledge of penetration testing tools (e.g., Metasploit, Burp Suite, Nmap, Wireshark). Experience with reverse engineering, exploit development, and vulnerability research. Familiarity with operating systems (Windows, Linux, macOS) and their security mechanisms. Understanding of network protocols, firewalls, and intrusion detection/prevention More ❯

Social network you want to login/join with: Senior Cybersecurity Consultant (Penetration Tester), slough col-narrow-left Client: Anson McCade Location: slough, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 7 Posted: 16.06.2025 Expiry Date: 31.07.2025 col-wide Job Description: A premier UK consultancy is seeking a skilled and … passionate Penetration Tester to join its growing team of cybersecurity experts. This is a dynamic opportunity for individuals with strong technical skills and a proactive mindset, eager to make a tangible impact across a wide range of client environments. Working on mission critical projects across National Security, Critical National Infrastructure and Defence the Senior Penetration Tester will liaise with highly-skilled teams acting as a trusted advisor. Key Responsibilities: Conduct hands-on internal penetration tests in infrastructure/Active Directory environments Produce clear and concise technical reports, summarising findings for both technical and business stakeholders Work directly with clients as a trusted advisor – this is a consulting-facing role Operate in sensitive, high-risk More ❯

A premier UK consultancy is seeking a skilled and passionate Penetration Tester to join its growing team of cybersecurity experts. This is a dynamic opportunity for individuals with strong technical skills and a proactive mindset, eager to make a tangible impact across a wide range of client environments. Working on mission critical projects across National Security, Critical National … Infrastructure and Defence the Senior Penetration Tester will liaise with highly-skilled teams acting as a trusted advisor. Key Responsibilities: Conduct hands-on internal penetration tests in infrastructure/Active Directory environments Produce clear and concise technical reports, summarising findings for both technical and business stakeholders Work directly with clients as a trusted advisor – this is … also be available: Possesses industry-recognised certifications such as CTM, CSTM, CTL, CSTL, OSCP, or CREST/Cyber Scheme qualifications. Brings specialist knowledge in one or more areas of penetration testing – this could include mobile app security, cloud environments, operational technology (OT), or specific sectors such as telecommunications, defence, or maritime. Demonstrates a strong desire to contribute to the More ❯

A premier UK consultancy is seeking a skilled and passionate Penetration Tester to join its growing team of cybersecurity experts. This is a dynamic opportunity for individuals with strong technical skills and a proactive mindset, eager to make a tangible impact across a wide range of client environments. Working on mission critical projects across National Security, Critical National … Infrastructure and Defence the Senior Penetration Tester will liaise with highly-skilled teams acting as a trusted advisor. Key Responsibilities: Conduct hands-on internal penetration tests in infrastructure/Active Directory environments Produce clear and concise technical reports, summarising findings for both technical and business stakeholders Work directly with clients as a trusted advisor – this is … also be available: Possesses industry-recognised certifications such as CTM, CSTM, CTL, CSTL, OSCP, or CREST/Cyber Scheme qualifications. Brings specialist knowledge in one or more areas of penetration testing – this could include mobile app security, cloud environments, operational technology (OT), or specific sectors such as telecommunications, defence, or maritime. Demonstrates a strong desire to contribute to the More ❯

Summary: CCL Solutions Group is seeking an exceptional Senior Penetration Tester with CHECK Team Leader Infrastructure (CTL-INF) qualifications to join our elite team of security professionals. Location: Home based Main Job Summary This is more than just a job, we're looking for individuals with a hacker's mindset, deep technical expertise, and a relentless drive … a leading provider of cybersecurity services, we are a team committed to making a real difference in protecting communities, businesses, and the critical infrastructure of the UK. As a Senior Penetration Tester within CCL Solutions Group, your key responsibilities will be: Lead and deliver end-to-end penetration testing engagements across infrastructure and cloud environments. Manage … reviews, and adversary emulation where required. Contribute to internal R&D, tooling improvements, and the development of our offensive security services. Required Skill Set & Experience: This role requires a senior and mature person who can demonstrate leadership, honesty and integrity and who expects high standards. Please understand this is not an entry level role it is essential that you More ❯

This job is brought to you by Jobs/Redefined, the UK's leading over-50s age inclusive jobs board. Job description Assistant Manager Job title: Senior Penetration Tester - Assistant Manager Location: UK Line of Business: Advisory - Risk Consulting Service Area: Cyber Security Roles and Responsibilities The Role At KPMG we are looking for an Assistant Manager … to cut your teeth on and a friendly, passionate team to develop and grow. The Team The KPMG's Cyber Defence (CDS) Team conducts client facing technical assurance and penetration testing and has a long and successful history in KPMG. Our clients are diverse and we cover many sectors with particular specialisms in Financial Services, High-end Defence Assurance … around three locations in Leeds, Bristol and London, therefore we are able to offer flexibility in base location, as well as embracing remote working. Responsibilities As this is a senior role, we want your business brain as well as your technical hacking skills. You will have ideas of how to drive the business forward, and be skilled in the More ❯

As a Senior Security Penetration Tester , you will be responsible for supporting the design, implementation, and maintenance of TVM (Threat & Vulnerability Management) solutions, controls and processes across the organisation. You will be liaising with Digital teams to ensure appropriate mitigation and remediation of vulnerabilities detected across our IT estate. This role requires an understanding of TVM concepts … ideal candidate will possess strong communication skills and will be committed to ensuring the highest level of security, compliance, and user experience. What you'll be doing as a Senior Security Penetration Tester Help support and develop an internal penetration testing function. Conduct network, application penetration testing, code and security reviews. Identify and exploit vulnerabilities … implemented and maintained. Responsible for supporting the creation of the operating model for vulnerability management, that it is shared, agreed and operates effectively across the business. Develop and maintain penetration testing documentation, policies, and procedures. Integrate cybersecurity solutions (e.g. vulnerability scanning tools) with existing systems, applications, and infrastructure. Evaluate and recommend technologies, tools, and vendors to meet business needs. More ❯

CHECK Senior Infrastructure Penetration Tester PGI is a global consultancy that helps organisations build digital resilience. We deploy our people to implement solutions on behalf of clients or to support them in developing their capabilities. Our Penetration Testers work with organisations of all sizes and types to detect and remediate vulnerabilities. They help identify areas lacking … could exploit, and makes recommendations to safeguard assets. What you'll be doing: Providing professional cybersecurity consultancy to internal and external stakeholders. Leading the delivery of PGI's infrastructure penetration testing. Collaborating on the design and delivery of new and existing service lines related to offensive security assessments. Supporting and often leading technical pre-sales, proposal writing, and client … ensure successful outcomes. Mentoring security consultants or clients by sharing knowledge and overseeing skill development. Participating in exercises such as Capture The Flag (CTF) challenges. Providing accurate scoping of penetration testing opportunities for sales activities. Supporting sales activities with proposals and client presentations. Supporting marketing with subject matter expertise and content development. Developing and maintaining technical skills and certifications More ❯

range of areas including Risk Assessments, Vulnerability Management, Accreditations (ISO27001, GDPR), GRC (Governance, Risk, Compliance), Security Architecture Design and Build (technical and Non-technical), Incident Response, Protective Monitoring Services, Penetration Testing and much more. We take clients through a journey to improve their overall security posture and maturity to ensure they feel reassured in the Security control, measures and … go. Our roles are only available if you hold or fulfil the criteria to obtain a UK Security Clearance. Your future duties and responsibilities An opportunity for an experienced penetration testers has become available due to growth, joining the CGI Cyber Security business unit, one of the largest groups of cyber security specialists in the UK. CGI has a … years. Experience of the assessment of bespoke applications, cloud technologies and mobile applications (on diverse mobile platforms) would be of an advantage. You would join our established team of penetration testers with the possibility of progressing to team leader or principal tester positions. You would be able to work flexibly, undertaking work at home and at client sites More ❯

pay will be based on your skills and experience — talk with your recruiter to learn more. Principal Tech Consultant - IT Infrastructure Ocho are exclusively working on a number of Penetration Tester roles! If you're passionate about ethical hacking and want to work on real-world cybersecurity challenges, this is the role for you. This organisation is on … major clients and high-profile projects, offering you the chance to work on cutting-edge security challenges in a dynamic and ambitious environment. What You'll Be Doing: Perform penetration tests on networks, applications, and infrastructure. Identify and exploit vulnerabilities to strengthen security defences. Use tools like Burp Suite, Nessus, Metasploit, and Kali Linux. Provide detailed reports with clear … Strong knowledge of OWASP, CVE, and security frameworks. Hands-on experience with ethical hacking & exploit techniques. Ability to communicate findings to technical and non-technical teams. Proficiency in using penetration testing tools such as BurpSuite Pro, Nmap, Nessus, and Metaspolit. Experienced in using Kali Linux and the associated penetration testing tool suite Nice to Have: Relevant security certifications More ❯

Join to apply for the Senior Penetration Tester role at Trustmarque 1 day ago Be among the first 25 applicants Join to apply for the Senior Penetration Tester role at Trustmarque Are you a passionate and highly skilled security expert, eager to lead complex penetration testing engagements and drive strategic client security? Join … Trustmarque's dynamic penetration testing team and become a pivotal force safeguarding our clients' digital ecosystems. In this senior role, you'll leverage your advanced expertise to conduct comprehensive penetration tests, provide strategic client advisory, and actively mentor the next generation of security talent. What you’ll be doing: Sharpen Your Skills, Sharpen Our Security: Stay at … the forefront of the industry by continuously honing your penetration testing expertise and certifications. Penetration Testing Powerhouse: Deliver a comprehensive range of penetration testing services, exceeding business needs and exceeding expectations. Client Champion: Collaborate closely with clients, acting as a trusted advisor and leader throughout engagements. Empower the Next Generation: Become a mentor and coach, sharing your More ❯

Join to apply for the Senior Penetration Tester/Check scheme CTL/CSTL Consultant role at Resillion Get AI-powered advice on this job and more exclusive features. Company Description Resillion is a global company with end-to-end capabilities: no matter your industry, your geographical location, or stage in your digital journey. With offices in … development, cyber security, or data-protection, the experts at Resillion do whatever it takes. We work as long and hard as necessary to get you to market. Job Title: Senior Penetration Tester/Check scheme CTL/CSTL Consultant - Permanent role Location: UK Wide - Remote Working, Exciting long-term projects This is an exciting opportunity to join … should have the ability to take initiative, learn quickly on the job, and deal with issues as they arise in a high-pressure environment. You will be an enthusiastic tester with a few years of experience, passionate about working in the security industry, and constantly researching the latest vulnerabilities to stay at the industry’s leading edge. You must More ❯

Job Description We have an incredible opportunity to join us here at Phoenix Group as a Senior Penetration Tester to join our Threat Led Pen-Testing Team within our Information Security Department. Job Type: Permanent Location: This role could be based in either our Telford or Edinburgh Office, with hybrid working, Flexible working: All of our roles … organisation that is tackling key issues such as transitioning our portfolio to net zero by 2050, and we’re not done yet. The role We are looking for a Senior Penetration Tester within our Threat led Pen-Testing team. In this role you will be conducting regular penetration tests ranging from web applications to infrastructure testing … and purple teaming. You Will Also As a senior, lead penetration tests from scoping, through to delivery, reporting and debriefing. Contribute to Quality Assurance of internally issued pen test reports. Collaborate with the Defensive (Blue) team when conducting Purple Team exercises Maintain knowledge of Cyber Security Threat Landscape, Attacks & Adversary TTPs What are we looking for? Essential At More ❯

Ocho are exclusively working on a number of Penetration Tester roles! If you're passionate about ethical hacking and want to work on real-world cybersecurity challenges, this is the role for you. This organisation is on a serious growth trajectory, having secured major clients and high-profile projects, offering you the chance to work on cutting-edge … security challenges in a dynamic and ambitious environment. What You'll Be Doing: Perform penetration tests on networks, applications, and infrastructure. Identify and exploit vulnerabilities to strengthen security defences. Use tools like Burp Suite, Nessus, Metasploit, and Kali Linux. Provide detailed reports with clear, actionable recommendations. Experience required: Strong knowledge of OWASP, CVE, and security frameworks. Hands-on experience … with ethical hacking & exploit techniques. Scripting & automation skills a plus. Ability to communicate findings to technical and non-technical teams. Proficiency in using penetration testing tools such as BurpSuite Pro, Nmap, Nessus, and Metaspolit. Experienced in using Kali Linux and the associated penetration testing tool suite Nice to Have: Relevant security certifications (e.g. OSCP, CREST, Cyber Scheme.) UK More ❯

Social network you want to login/join with: Ocho are exclusively working on a number of Penetration Tester roles! If you're passionate about ethical hacking and want to work on real-world cybersecurity challenges, this is the role for you. This organisation is on a serious growth trajectory, having secured major clients and high-profile projects … offering you the chance to work on cutting-edge security challenges in a dynamic and ambitious environment. What You'll Be Doing: Perform penetration tests on networks, applications, and infrastructure. Identify and exploit vulnerabilities to strengthen security defences. Use tools like Burp Suite, Nessus, Metasploit, and Kali Linux. Provide detailed reports with clear, actionable recommendations. Experience required: Strong knowledge … of OWASP, CVE, and security frameworks. Hands-on experience with ethical hacking & exploit techniques. Ability to communicate findings to technical and non-technical teams. Proficiency in using penetration testing tools such as BurpSuite Pro, Nmap, Nessus, and Metaspolit. Experienced in using Kali Linux and the associated penetration testing tool suite Nice to Have: Relevant security certifications (e.g. OSCP More ❯

Social network you want to login/join with: Ocho are exclusively working on a number of Penetration Tester roles! If you're passionate about ethical hacking and want to work on real-world cybersecurity challenges, this is the role for you. This organisation is on a serious growth trajectory, having secured major clients and high-profile projects … offering you the chance to work on cutting-edge security challenges in a dynamic and ambitious environment. What You'll Be Doing: Perform penetration tests on networks, applications, and infrastructure. Identify and exploit vulnerabilities to strengthen security defences. Use tools like Burp Suite, Nessus, Metasploit, and Kali Linux. Provide detailed reports with clear, actionable recommendations. Experience required: Strong knowledge … of OWASP, CVE, and security frameworks. Hands-on experience with ethical hacking & exploit techniques. Ability to communicate findings to technical and non-technical teams. Proficiency in using penetration testing tools such as BurpSuite Pro, Nmap, Nessus, and Metaspolit. Experienced in using Kali Linux and the associated penetration testing tool suite Nice to Have: Relevant security certifications (e.g. OSCP More ❯

actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range Direct message the job poster from Opus Recruitment Solutions Senior Consultant - Cyber Security - Opus Recruitment Solutions Opus are looking for an experienced Penetration Tester to join our client, a cyber consultancy specialising exclusively in penetration testing … and red teaming, delivering high-impact, adversary-simulated engagements for clients ranging from agile tech scale-ups to critical infrastructure providers. As a Senior Penetration Tester, you’ll play a central role in executing and shaping these engagements—across infrastructure, web, cloud, and bespoke environments—while also leading goal-based assessments and full-scale red team operations. … position suited to someone who thrives in technically demanding scenarios and wants to work alongside a small, elite team of offensive security specialists. Key Responsibilities Lead and execute complex penetration tests and adversary simulations Deliver red team engagements aligned with frameworks like TIBER, CBEST, and MITRE ATT&CK Develop custom tooling and exploits where required Create detailed, client-facing More ❯

Social network you want to login/join with: Job description Role Overview Our client is searching for a highly skilled Senior Penetration Tester to join our growing team. In this role, you’ll play a pivotal role in strengthening our clients’ security posture by identifying and exploiting vulnerabilities across a wide range of applications. This will … You’ll go beyond basic vulnerabilities like XSS and SQLi, leveraging your understanding of application flows to uncover and exploit complex business logic flaws. Core Responsibilities Plan and execute penetration testing engagements on diverse application types (web, API, thick client, mobile) adhering to industry best practices (OWASP, PTES) and Wilbourne’s established processes. Conduct in-depth source code reviews … Utilise a mature suite of web and mobile application security testing tools (Burp Suite, ZAP, etc.) to thoroughly assess application security. Experience 5 to 7 years of experience in penetration testing with a focus on various application types (web, API, thick client, mobile). Proven experience in identifying and exploiting a wide range of vulnerabilities (SQLi, XSS, CSRF, business More ❯

Senior Penetration Tester – (UK only - Must be eligible for Security Clearance) Location: UK (Leeds, Bristol, London or Remote) Salary - £45k - £60k Step up your game in cybersecurity. We’re looking for an experienced Senior Penetration Tester who thrives on pushing boundaries, thinks like an attacker, and delivers like a pro. You’ll be joining … knit team of passionate ethical hackers tackling high-impact, real-world cyber threats across both government and commercial landscapes. What You’ll Be Doing: Lead and deliver hands-on penetration tests Mentor junior testers and review technical outputs Collaborate with clients and provide expert guidance Feed into proposals and help shape strategic direction Continuously grow your technical and consulting … skills What You’ll Need: ✔ NCSC CHECK Team Member status ✔ Solid UK penetration testing experience (ideally across varied environments) ✔ Technical depth in networks, systems, and application testing ✔ Strong communication and reporting skills ✔ A hacker mindset and the drive to stay ahead of evolving threats ✔ Clear and demonstrable understanding of penetration testing and red-teaming including NCSC and CREST More ❯

Senior Penetration Tester – UK remote - £60,000 - £80,000 Opus are looking for an experienced Penetration Tester to join our client, a cyber consultancy specialising exclusively in penetration testing and red teaming, delivering high-impact, adversary-simulated engagements for clients ranging from agile tech scale-ups to critical infrastructure providers. As a Senior Penetration Tester, you’ll play a central role in executing and shaping these engagements—across infrastructure, web, cloud, and bespoke environments—while also leading goal-based assessments and full-scale red team operations. This is a hands-on, client-facing position suited to someone who thrives in technically demanding scenarios and wants to work alongside a small … elite team of offensive security specialists. Key Responsibilities Lead and execute complex penetration tests and adversary simulations Deliver red team engagements aligned with frameworks like TIBER, CBEST, and MITRE ATT&CK Develop custom tooling and exploits where required Create detailed, client-facing technical and executive reports Mentor junior testers and contribute to internal R&D Support scoping, pre-engagement More ❯

Senior Penetration Tester – UK remote - £60,000 - £80,000 Opus are looking for an experienced Penetration Tester to join our client, a cyber consultancy specialising exclusively in penetration testing and red teaming, delivering high-impact, adversary-simulated engagements for clients ranging from agile tech scale-ups to critical infrastructure providers. As a Senior Penetration Tester, you’ll play a central role in executing and shaping these engagements—across infrastructure, web, cloud, and bespoke environments—while also leading goal-based assessments and full-scale red team operations. This is a hands-on, client-facing position suited to someone who thrives in technically demanding scenarios and wants to work alongside a small … elite team of offensive security specialists. Key Responsibilities Lead and execute complex penetration tests and adversary simulations Deliver red team engagements aligned with frameworks like TIBER, CBEST, and MITRE ATT&CK Develop custom tooling and exploits where required Create detailed, client-facing technical and executive reports Mentor junior testers and contribute to internal R&D Support scoping, pre-engagement More ❯

Senior Penetration Tester Are you a passionate and highly skilled security expert, eager to lead complex penetration testing engagements and drive strategic client security? Join Trustmarque's dynamic penetration testing team and become a pivotal forcesafeguarding our clients' digital ecosystems. In this senior role, you'll leverage your advanced expertise to conduct comprehensive penetration … mentor the next generation of security talent. What you’ll be doing: Sharpen Your Skills, Sharpen Our Security: Stay at the forefront of the industry by continuously honing your penetration testing expertise and certifications. Penetration Testing Powerhouse: Deliver a comprehensive range of penetration testing services, exceeding business needs and exceeding expectations. Client Champion: Collaborate closely with clients … at Cyber. Collaborative Spirit: Foster a culture of knowledge sharing within the Security Testing Practice team. You'll also: Be passionate about the security lifecycle. Ability to engage with senior executives of differing technical levels, and to encourage the buy in of our security ethos. Confidence, flexibility and ability to think creatively and offer solutions to complex problems. Ability More ❯

Sr. Penetration Tester Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: None Type of Travel: None The Opportunity: Are you ready to shape the future of intelligence systems? CACI is seeking a talented Penetration Tester to join our team in … your career. You can learn more about our program by accessing the landing page: VORPAL Jobs () Responsibilities: You will lead small project teams with specific experience planning and executing penetration tests in a Windows environment. You will be called upon to solve technical puzzles every day using your breadth of computer, network, and applications pen-testing experience. As a … have an active TS/SCI with required Polygraph clearance University Degree or equivalent experience and minimum of 15+ years of related work experience Must have expertise in Windows penetration testing tools and techniques Ability to clearly communicate findings through written and oral products System level and security administration knowledge of computer operating systems. Operating system experience shall be More ❯

Senior Penetration Tester -240,000+ Total Package Entasis Partners are proud to be exclusively supporting a global organisation at the forefront of innovation in financial systems and high-performance computing. This is not your average security role. Our partner operates in a deeply technical, high-trust environment where the scale of data, the pace of experimentation, and … calibre of internal talent make for an exceptionally challenging and rewarding opportunity. With a newly developed central London site focused on next-generation research, this firm is seeking a Senior Penetration Tester to strengthen its already world-class internal security capability. The Opportunity This is a hands-on, highly autonomous role embedded within a specialist cyber function. … You’ll be trusted to scope, execute, and deliver sophisticated penetration tests and control assessments across a range of technologies including Kubernetes, Jenkins, and Windows-based infrastructure. More than just finding issues, you’ll work in partnership with teams across the business to advise, remediate, and embed meaningful improvements. The environment is agile, collaborative, and engineered for depth not More ❯