1 to 25 of 243 Penetration Tester Jobs

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 systems. More ❯

At Vertical Structure (an Instil Company), we specialise in providing human-focused security and penetration testing services for web applications, cloud infrastructure and mobile applications. The Role We are looking for a CTL (Infrastructure) to join our dynamic team based in Belfast. As a Pen Tester, you will be part of the delivery team, conducting penetration tests … validate infrastructure and technologies, including cloud-based systems continuously incorporating new techniques into the team's methodology. Automate repetitive tasks by developing scripts to streamline testing processes. Mentor junior penetration testers and contribute to their professional development. Play a key role in enhancing existing tools, methodologies, and reports. Support pre-sales efforts by acting as a penetration testing … non-technical stakeholders. Contribute to thought leadership by writing blogs/white papers and/or speaking at conferences. Need to Have At least 5 years of experience in penetration testing. UK Cyber Security Council Chartership status of Principal or above. Subject matter expertise in web, mobile or network penetration testing with track record of end to end 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 to … 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 and mentor … Leader certification (Cyber Scheme Team Leader - INF or CREST CCT-INF). Minimum of 2 years delivering CHECK engagements as a CTL. At least 3 years of hands-on penetration testing experience in enterprise environments. Deep understanding of infrastructure testing, Active Directory security, and cloud technologies (AWS, Azure, Kubernetes). Strong familiarity with tools such as Nmap, Burp Suite 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 Lead Penetration Tester role at SITA 2 days ago Be among the first 25 applicants Join to apply for the Lead Penetration Tester role at SITA Overview WELCOME TO SITA We're the team that keeps airports moving, airlines flying smoothly, and borders open. Our tech and communication innovations are the … clockwork. Want to be a part of something big? Are you ready to love your job? The adventure begins right here, with you, at SITA. PURPOSE As a Lead Penetration Tester , part of the SITA Enterprise Information Security Office, you will assess SITA infrastructure and products to identify information security weaknesses and provide remediation strategies. You will also … of the DevOps lifecycle. Provide guidance on secure product design: Threat Modelling, architecture reviews. Qualifications EXPERIENCE 5-7 years' experience in at least three of the following fields: Network penetration testing Web and mobile application assessments Cloud penetration testing (Azure, AWS,...) Mastery of Unix/Linux/Windows operating systems, including bash and PowerShell, shell scripting or More ❯

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 technical skills and … 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 … 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 ❯

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 ❯

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 ❯

s largest enterprises trust us to create and maintain secure digital ecosystems using our comprehensive cyber security platform and mitigation services. We're on the hunt for a skilled Penetration Tester with a passion for Web Application Security. In this exciting role, you'll play a pivotal part in uncovering and addressing security vulnerabilities across networks, systems, and … turn your expertise into a powerful shield against cyber threats, we'd love to hear from you! Your main tasks and accountabilities will be: Perform vulnerability scans and basic penetration testing on networks, web applications, mobile applications, and other systems. Identify common vulnerabilities (e.g., OWASP Top 10) and misconfigurations in IT infrastructure. Participate in penetration testing exercises under … potential vulnerabilities. Document identified vulnerabilities, potential impacts, and recommended mitigation strategies. Help prepare detailed reports for senior team members and stakeholders, including technical staff and management. Update and manage penetration testing tools and software. Assist in setting up and maintaining test environments. Keep up to date with the latest security threats, tools, and techniques. Participate in training sessions, certifications 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 environments where 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 a … 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 a … 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 a … 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 a … 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 ❯

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 knowledge and experience 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 sufficient … 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 ❯

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 who … 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 … of KPMG. • Developing an understanding of KPMG's broader offerings • Contributing to proposals and participating in client presentations. The Person Required • Passion for Hacking! • Clear and demonstrable understanding of penetration testing and red-teaming including NCSC and CREST accredited schemes. • Proven experience of successfully delivering testing • Proven experience working within the UK cyber security industry • Demonstrable understanding and practical 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 ❯

About Darkshield Darkshield is an expert cybersecurity agency based in York, UK. We help organisations navigate an increasingly complex digital landscape by providing expert services in penetration testing, vulnerability assessment, managed security, and more. Our mission is to protect businesses by delivering tailored, cutting-edge cybersecurity solutions that keep them resilient and ahead of cyber threats. The Role We … are looking for an experienced Penetration Tester to join our team. You will conduct security assessments and ethical hacking activities to identify vulnerabilities in client systems. This role requires a deep understanding of attack techniques, security frameworks, and risk mitigation strategies. Key Responsibilities Conduct penetration testing on networks, applications, and infrastructure. Identify, analyse, and report security vulnerabilities. … exploits, and hacking techniques. Assist in security awareness training and red team exercises. Provide clear and actionable reports to both technical and non-technical audiences. Requirements Proven experience in penetration testing and ethical hacking. Proficiency in tools such as Burp Suite, Metasploit, Nmap, Wireshark, and Kali Linux. Strong knowledge of web application, network, and infrastructure security. Experience with scripting More ❯

opportunity to join a team that values your expertise, supports your growth, and offers the flexibility of remote working with the stimulation of varied engagements. Key Responsibilities: Conduct thorough penetration tests on infrastructure, networks, cloud environments, and web applications. Deliver high-quality, client-ready reports detailing findings, impact, and practical remediation advice. Collaborate directly with client stakeholders during scoping … e.g., OWASP Top 10, MITRE ATT&CK). Strong familiarity with tools such as Burp Suite, Nmap, Metasploit, etc. Excellent communication and reporting skills. Required Qualifications: Demonstrable experience in penetration testing (minimum 2 years preferred). Hold at least one of the following certifications: OSCP (Offensive Security Certified Professional) CRT (CREST Registered Tester) CCT-INF (CREST Certified Infrastructure … Tester) #J-18808-Ljbffr More ❯

opportunity to join a team that values your expertise, supports your growth, and offers the flexibility of remote working with the stimulation of varied engagements. Key Responsibilities: Conduct thorough penetration tests on infrastructure, networks, cloud environments, and web applications. Deliver high-quality, client-ready reports detailing findings, impact, and practical remediation advice. Collaborate directly with client stakeholders during scoping … e.g., OWASP Top 10, MITRE ATT&CK). Strong familiarity with tools such as Burp Suite, Nmap, Metasploit, etc. Excellent communication and reporting skills. Required Qualifications: Demonstrable experience in penetration testing (minimum 2 years preferred). Hold at least one of the following certifications: OSCP (Offensive Security Certified Professional) CRT (CREST Registered Tester) CCT-INF (CREST Certified Infrastructure … Tester) #J-18808-Ljbffr More ❯

opportunity to join a team that values your expertise, supports your growth, and offers the flexibility of remote working with the stimulation of varied engagements. Key Responsibilities: Conduct thorough penetration tests on infrastructure, networks, cloud environments, and web applications. Deliver high-quality, client-ready reports detailing findings, impact, and practical remediation advice. Collaborate directly with client stakeholders during scoping … e.g., OWASP Top 10, MITRE ATT&CK). Strong familiarity with tools such as Burp Suite, Nmap, Metasploit, etc. Excellent communication and reporting skills. Required Qualifications: Demonstrable experience in penetration testing (minimum 2 years preferred). Hold at least one of the following certifications: OSCP (Offensive Security Certified Professional) CRT (CREST Registered Tester) CCT-INF (CREST Certified Infrastructure … Tester) #J-18808-Ljbffr More ❯

opportunity to join a team that values your expertise, supports your growth, and offers the flexibility of remote working with the stimulation of varied engagements. Key Responsibilities: Conduct thorough penetration tests on infrastructure, networks, cloud environments, and web applications. Deliver high-quality, client-ready reports detailing findings, impact, and practical remediation advice. Collaborate directly with client stakeholders during scoping … e.g., OWASP Top 10, MITRE ATT&CK). Strong familiarity with tools such as Burp Suite, Nmap, Metasploit, etc. Excellent communication and reporting skills. Required Qualifications: Demonstrable experience in penetration testing (minimum 2 years preferred). Hold at least one of the following certifications: OSCP (Offensive Security Certified Professional) CRT (CREST Registered Tester) CCT-INF (CREST Certified Infrastructure … Tester) #J-18808-Ljbffr More ❯