1 to 25 of 57 Penetration Tester Jobs in the UK

Lead Cyber Security Consultant - Penetration Tester (UK) Dionach are a dynamic cyber security company looking for an experienced Penetration Tester to join our growing Pentest Team. Do you have demonstrable experience in penetration testing as a Lead Penetration Tester? Do you want to … continue your technical progression while gaining more responsibilities? If so, keep reading, this job is for you! Your main role will be as a Penetration Tester and Lead Consultant, with options for research and development, and to work in other areas of information security consultancy. You will have … There are opportunities to improve your qualifications, mentor others, and work with a wide variety of technologies and organisations. Requirements A significant experience in penetration testing, including network, web application, and internal penetration testing. Holding a relevant certification: CREST CRT, CREST CCT, OSCP, OSCE or equivalent certification. Experience More ❯

Lead Cyber Security Consultant - Penetration Tester (UK) Dionach are a dynamic cyber security company looking for an experienced Penetration Tester to join our growing Pentest Team. Do you have demonstrable experience in penetration testing as a Lead Penetration Tester? Do you want to … continue your technical progression while gaining more responsibilities? If so, keep reading, this job is for you! Your main role will be as a Penetration Tester and Lead Consultant, with options for research and development, and to work in other areas of information security consultancy. You will have … There are opportunities to improve your qualifications, mentor others, and work with a wide variety of technologies and organisations. Requirements: A significant experience in penetration testing, including network, web application, and internal penetration testing Holding a relevant certification: CREST CRT, CREST CCT, OSCP, OSCE or equivalent certification Experience More ❯

Job Title: Penetration Tester (Multiple Openings) Location: Bristol, UK (with frequent travel to client sites) Type: Permanent Salary: £55k - £80k We are seeking multiple Penetration Testers to join a leading technology company based in Bristol, UK. The company specialises in cybersecurity consultancy, software development, and bespoke research … such as telecommunications, finance, defence, rail, and aerospace. Our team plays a key role in safeguarding critical infrastructure and supporting global organisations. As a Penetration Tester, you will be instrumental in evaluating and strengthening our clients' security frameworks. Your role will involve conducting advanced penetration testing, vulnerability … red teaming exercises to identify and mitigate security risks. Additionally, you will contribute to project management and client engagement. Key Responsibilities: Plan and execute penetration tests on networks, systems, and applications to identify security vulnerabilities. Perform in-depth vulnerability assessments, security audits, and risk analysis, providing clients with detailed More ❯

an exciting Cyber Security Consultancy looking to further establish themselves within the Offensive Security world and as such looking to bring in a Senior Penetration Tester to spearhead the team through CHECK accreditation. This is a truly rare opportunity to be a part of an ambitious organisation making … out a dedicated Red Team function. Salary: £80,000 (potentially negotiable) Location: Remote + National Client Site Travel Essential : CHECK Team Leader – Inf Senior Penetration Tester – Responsibilities: Act as the Infrastructure testing SME, owning the service line and navigate through accreditation. Lead and oversee a range of penetration … team members through mentorship, shadowing and knowledge-sharing initiatives. Working on client site occasionally to deliver Internal Infrastructure, Wifi and Physical Testing engagements Senior Penetration Tester – Requirements: Demonstrable experience leading penetration testing engagements within a CHECK environment, must be holding CHECK Team Leader Inf status. Proficiency in More ❯

Penetration Tester Location: London/Cheltenham/Edinburgh Please Note: Any offer of employment is subject to satisfactory BPSS and SC security clearance which requires 5 years continuous UK address history at the point of application. Accenture is a leading global professional services company, providing a broad range … innovation, we apply industry expertise, diverse skill sets and next-generation technology to each business challenge. We believe in inclusion and diversity and supporting Penetration Tester the whole person. Our core values comprise of Stewardship, Best People, Client Value Creation, One Global Network, Respect for the Individual and … are looking for experience in the following skills: CHECK Team Member status - will need to hold Check Team member exam Broad understanding of various penetration specialties from infrastructure to applications and cloud testing Demonstrable ability in deriving security requirements from functional objectives with limited knowledge of the underlying solution More ❯

Job Description Penetration Tester Position Description CGI Cyber Security Team in the UK is one of the largest Cyber consultancies in the UK with around 300 members. The UK Cyber team works across a variety of domains including: Government, Defence, Critical Infrastructure, Healthcare, Utilities, Banking and Financial Services … 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 … 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 tester has become available due to growth, joining the CGI Cyber Security business unit, one of the largest groups of cyber security specialists 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 … 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 … 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 cyber security solutions (e.g. vulnerability scanning tools) with existing systems, applications, and infrastructure. Evaluate and recommend technologies, tools 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 … 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 … 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 cyber security solutions (e.g. vulnerability scanning tools) with existing systems, applications, and infrastructure. Evaluate and recommend technologies, tools More ❯

Penetration Tester Position Description CGI Cyber Security Team in the UK is one of the largest Cyber consultancies in the UK with around 300 members. The UK Cyber team works across a variety of domains including: Government, Defence, Critical Infrastructure, Healthcare, Utilities, Banking and Financial Services and Many … 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 … 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 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 … 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 … 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 More ❯

3B Data Security (part of UBDS Group) are looking for a skilled and experienced Senior Penetration Tester who can provide exceptional service delivery and contribute to the continued expansion of the organisation. You will have a CHECK Team Leader (CTL) qualification in infrastructure and must also hold a … different industries and technology areas, and help to grow the team, business unit and service offerings where necessary. Key Responsibilities Include: 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 … is essential and a required prerequisite. A second CTL qualification in applications would be a bonus. Chartered or Principal CSP. A solid background in penetration testing with demonstrable experience of working at a senior level. An ability to achieve and hold UK security clearance is essential. Demonstrable experience of More ❯

This established financial services firm seeks an experienced and certified Penetration Tester to build and lead a new internal penetration testing service. The firm has been using 3rd parties for penetration testing until now, but the decision has now been made to bring this in-house. … This is a rare opportunity to build, own and lead the service. The ideal candidate will be an experienced penetration tester with one of the following certifications: OSCP, CRT or GPEN. You should have hands-on webapp and infrastructure pentesting experience gained in either an in-house team More ❯

based decisions to improve overall security posture. What You'll Do Working independently and collaboratively with a team to both lead and support Perform penetration testing on applications with complex technology stacks from both a: Blackbox perspective & Whitebox perspective Dynamically flex your skills when assessing emerging or custom technologies … management, sales and other delivery team members to drive customer satisfaction and meet project deliverables Travel up to 10% What You'll Bring Application penetration testing and assessment tradecraft and methodologies (including browser-based, API) Strong working knowledge of at least two programming or scripting languages Strong understanding of … a consulting/professional services role Minimum of 5 years' experience in Application Security and/or Software Development Expert proficiency in Web Application Penetration Testing Excellent overall technical skills, with strong expertise in at least one of the following: Mobile Application Penetration Testing Thick Application Penetration 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 Mid/Senior Penetration Tester to join our dynamic team based in Belfast. As a … Pen Tester, you will be part of the delivery team, conducting penetration tests and vulnerability assessments across a range of technologies and a wide range of customers including software, fintech, manufacturing, engineering, legal, and public sector. Your insights will be crucial in identifying security weaknesses and helping clients … Work Scheme Day to Day Probe & exploit security vulnerabilities in client's Infrastructure/cloud, Web Applications and Mobile Applications using a variety of penetration tests. Write detailed reports outlining vulnerabilities and providing actionable recommendations. Collaborate with clients during kick-off and discovery sessions, providing expert advice. Stay current 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 Mid/Senior Penetration Tester to join our dynamic team based in Belfast. As a … Pen Tester, you will be part of the delivery team, conducting penetration tests and vulnerability assessments across a range of technologies and a wide range of customers including software, fintech, manufacturing, engineering, legal, and public sector. Your insights will be crucial in identifying security weaknesses and helping clients … Work Scheme Day to Day Probe & exploit security vulnerabilities in client's Infrastructure/cloud, Web Applications and Mobile Applications using a variety of penetration tests. Write detailed reports outlining vulnerabilities and providing actionable recommendations. Collaborate with clients during kick-off and discovery sessions, providing expert advice. Stay current 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 Penetration Tester to join our dynamic team based in Belfast. As a Pen Tester, you will be part of the delivery team, conducting penetration tests and vulnerability assessments across a range of technologies and a wide range of customers including software, fintech, manufacturing, engineering, legal, and public sector. Your insights will be crucial in identifying security weaknesses and helping clients fortify their … Work Scheme Day to Day Probe & exploit security vulnerabilities in client's Infrastructure/cloud, Web Applications and Mobile Applications using a variety of penetration tests. Write detailed reports outlining vulnerabilities and providing actionable recommendations. Collaborate with clients during kick-off and discovery sessions, providing expert advice. Stay current More ❯

Overview Senior Penetration Tester required to join a growing Cyber team. In this role, you'll conduct penetration tests and vulnerability assessments across a variety of sectors, providing insights to enhance clients' security. Responsibilities Perform penetration tests on web, cloud, and mobile systems. Write detailed reports … Automate repetitive tasks and enhance tools and methodologies. Effectively communicate findings to both technical and non-technical stakeholders. Requirements 2+ years of experience in penetration testing. Expertise in web technologies, Linux, Windows, Active Directory. Proficiency with tools like BurpSuite Pro, Nmap, and Nessus. Familiar with Kali Linux and penetration More ❯

Job Details Cyber Security Engineer Senior Penetration Tester Edinburgh, Posted: 3/6/2025 Job ID#: 59879 Job Category: Cyber Security Engineer Position Type: Full Time Duration: Full Time Stefanini Group is hiring! Exciting opportunity awaits, let us help you get started! Click Apply now or email … Prachi Mehta () for faster processing! Responsibilities: Conduct penetration tests across Web applications, APIs, Mobile applications, infrastructure, cloud environments, and devices. Develop tools and techniques to automate, scale, and accelerate adversary emulation capabilities and vulnerability discovery. Identify and document potential vulnerabilities and weaknesses in web applications. Provide detailed and actionable … application security threats and mitigation techniques. Develop and maintain standard operating procedures and best practices for web application security testing. Developing and executing comprehensive penetration testing plans. Analyzing and interpreting test results to provide actionable recommendations for improving security. Monitor and analyze web application security logs and reports. Collaborating More ❯

Senior Penetration Tester Location: Remote Based I am working on an exciting opportunity to join a growing boutique organisation. Previous experience within Security Testing is a bonus. You should be able to demonstrate the following: Mobile Apps Pen Testing - Android/iOS (Desirable) Infrastructure - Internal/External Red More ❯

Overview As a Penetration Tester, you will perform formal and comprehensive penetration testing assessments, including producing full written reports to appropriate standards and within agreed deadlines. In addition, you will support with client pre-engagement activities, including scoping and proposal drafting, as well as researching new vulnerabilities … and technologies, following responsible disclosure, and sharing such findings within the team. Responsibilities Perform formal and comprehensive application and other penetration testing assessments where appropriate and required; Provide well-written, concise, technical and non-technical reports in English; Perform vulnerability/attack surface assessments and provide findings with remediation … actions; Support with various client pre-engagement interactions, including scoping activities and proposal drafting; Manage and deliver penetration testing project activities within strict deadlines; Research new technologies, security topics and vulnerabilities within the wider team to identify new vulnerabilities and follow responsible disclosure; Coach and mentor Graduate and Junior More ❯

Overview As a Penetration Tester, you will perform formal and comprehensive penetration testing assessments, including producing full written reports to appropriate standards and within agreed deadlines. In addition, you will support with client pre-engagement activities, including scoping and proposal drafting, as well as researching new vulnerabilities … and technologies, following responsible disclosure, and sharing such findings within the team. Responsibilities Perform formal and comprehensive application and other penetration testing assessments where appropriate and required; Provide well-written, concise, technical and non-technical reports in English; Perform vulnerability/attack surface assessments and provide findings with remediation … actions; Support with various client pre-engagement interactions, including scoping activities and proposal drafting; Manage and deliver penetration testing project activities within strict deadlines; Research new technologies, security topics and vulnerabilities within the wider team to identify new vulnerabilities and follow responsible disclosure; Coach and mentor Graduate and Junior More ❯

Overview As a Penetration Tester, you will perform formal and comprehensive penetration testing assessments, including producing full written reports to appropriate standards and within agreed deadlines. In addition, you will support with client pre-engagement activities, including scoping and proposal drafting, as well as researching new vulnerabilities … and technologies, following responsible disclosure, and sharing such findings within the team. Responsibilities Perform formal and comprehensive application and other penetration testing assessments where appropriate and required; Provide well-written, concise, technical and non-technical reports in English; Perform vulnerability/attack surface assessments and provide findings with remediation … actions; Support with various client pre-engagement interactions, including scoping activities and proposal drafting; Manage and deliver penetration testing project activities within strict deadlines; Research new technologies, security topics and vulnerabilities within the wider team to identify new vulnerabilities and follow responsible disclosure; Coach and mentor Graduate and Junior More ❯

Overview As a Penetration Tester, you will perform formal and comprehensive penetration testing assessments, including producing full written reports to appropriate standards and within agreed deadlines. In addition, you will support with client pre-engagement activities, including scoping and proposal drafting, as well as researching new vulnerabilities … and technologies, following responsible disclosure, and sharing such findings within the team. Responsibilities Perform formal and comprehensive application and other penetration testing assessments where appropriate and required; Provide well-written, concise, technical and non-technical reports in English; Perform vulnerability/attack surface assessments and provide findings with remediation … actions; Support with various client pre-engagement interactions, including scoping activities and proposal drafting; Manage and deliver penetration testing project activities within strict deadlines; Research new technologies, security topics and vulnerabilities within the wider team to identify new vulnerabilities and follow responsible disclosure; Coach and mentor Graduate and Junior More ❯

Overview As a Penetration Tester, you will perform formal and comprehensive penetration testing assessments, including producing full written reports to appropriate standards and within agreed deadlines. In addition, you will support with client pre-engagement activities, including scoping and proposal drafting, as well as researching new vulnerabilities … and technologies, following responsible disclosure, and sharing such findings within the team. Responsibilities Perform formal and comprehensive application and other penetration testing assessments where appropriate and required; Provide well-written, concise, technical and non-technical reports in English; Perform vulnerability/attack surface assessments and provide findings with remediation … actions; Support with various client pre-engagement interactions, including scoping activities and proposal drafting; Manage and deliver penetration testing project activities within strict deadlines; Research new technologies, security topics and vulnerabilities within the wider team to identify new vulnerabilities and follow responsible disclosure; Coach and mentor Graduate and Junior More ❯

Overview As a Penetration Tester, you will perform formal and comprehensive penetration testing assessments, including producing full written reports to appropriate standards and within agreed deadlines. In addition, you will support with client pre-engagement activities, including scoping and proposal drafting, as well as researching new vulnerabilities … and technologies, following responsible disclosure, and sharing such findings within the team. Responsibilities Perform formal and comprehensive application and other penetration testing assessments where appropriate and required; Provide well-written, concise, technical and non-technical reports in English; Perform vulnerability/attack surface assessments and provide findings with remediation … actions; Support with various client pre-engagement interactions, including scoping activities and proposal drafting; Manage and deliver penetration testing project activities within strict deadlines; Research new technologies, security topics and vulnerabilities within the wider team to identify new vulnerabilities and follow responsible disclosure; Coach and mentor Graduate and Junior More ❯