1 to 25 of 33 Penetration Tester Jobs in the UK

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 - Remote up to 50K Basic Salary Are you passionate about cybersecurity and eager to make an impact? We have an exciting opportunity for a Penetration Tester to join our growing organization. Why Join Us? Diverse Challenges: Work on a variety of applications including Web … Remote Flexibility: Enjoy the freedom and convenience of a fully remote position. What We're Looking For: Experience: 2+ years of commercial experience in penetration testing. Skills: Proficiency in testing web applications, infrastructure, cloud environments, code reviews, and mobile applications. Attributes: A passion for cybersecurity, a drive for excellence More ❯

Overview As a Senior Penetration Tester, with a focus on social engineering & physical penetration testing (black team), 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 training, client … pre-engagement activities (including scoping and proposal drafting), researching vulnerabilities and maintaining process documentation. Responsibilities Perform formal and comprehensive Social Engineering and other penetration testing assessments (i.e Application and/or Infrastructure based assessments) where appropriate and required; Attend customer sites to deliver engagements where required (such as Physical … Penetration Testing/Black Team engagements); Provide well-written, concise, technical and non-technical reports in English; Perform vulnerability 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 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 ❯

Principal Penetration Tester – Remote (UK) | Up to £90,000 We’re hiring for an experienced Principal Penetration Tester to join a fast-growing cybersecurity consultancy working across over 30 countries. This is a remote-first role with optional access to an office in Leeds. This is … a hands-on, client-facing opportunity suited to someone who enjoys working across the full spectrum of penetration testing and red teaming, while also contributing to client relationships and leading high-level engagements. You'll be involved in scoping and delivering advanced red team assessments, mentoring more junior team … supporting innovation through offensive security research. A GitHub portfolio of scripts or tools is required at interview stage. The essentials: Minimum 7 years of penetration testing experience, with at least 4 years in red teaming Strong hands-on background across a range of testing disciplines, including networks, infrastructure, applications More ❯

I'm hiring a Penetration Tester on behalf of a cyber security firm who thrive on uncovering the unknown, breaking barriers, and staying five steps ahead of tomorrow's threats. Their Penetration Testers are more than ethical hackers-they're digital explorers with a license to legally … web and cloud-based applications. Collaborating closely with digital product teams to recommend and implement effective security measures. Independently planning, executing, and reporting on penetration tests and security audits. Performing in-depth source code reviews to uncover potential security flaws. Supporting incident response efforts and contributing to ongoing cybersecurity … Essential: Relevant degree e.g. Computer Science, Cyber Security Several years professional experience in an offensive security role. Experience performing two or more types of penetration test such as web application, infrastructure, cloud etc Experience working with tools such as Kali Linux, BurpSuite and Bloodhound. Minimum C1 German and fluent More ❯

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. Simulate cyberattacks to evaluate security defences. Develop security testing methodologies and improve existing processes. Collaborate with clients to provide security recommendations and mitigation strategies. Stay up to date with the latest security 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 ❯

Role: Penetration Tester Type: Permanent Location: Cheltenham/Remote Clearance: SC/DV Are you an offensive security specialist who is excited about delivering the best service possible? Keen to work in a business where you stand to work alongside some very talented testers? CND are working with … a boutique Cyber Security consultancy who are focused on the Penetration Testing market. What makes them stand out? They are not interested in flashy marketing and would never be caught trying to pass off a Nessus scan as a Penetration Test. The business has been built on delivering … The company have an office in Cheltenham however you are welcome to work where is best for you. Key Responsibilities: • Work to deliver CHECK penetration testing services • Lean into non-CHECK work where necessary • Work with the sales team to flesh out technical input as needed • Deliver quality reports More ❯

Role: Penetration Tester Type: Permanent Location: Cheltenham/Remote Clearance: SC/DV Are you an offensive security specialist who is excited about delivering the best service possible? Keen to work in a business where you stand to work alongside some very talented testers? CND are working with … a boutique Cyber Security consultancy who are focused on the Penetration Testing market. What makes them stand out? They are not interested in flashy marketing and would never be caught trying to pass off a Nessus scan as a Penetration Test. The business has been built on delivering … The company have an office in Cheltenham however you are welcome to work where is best for you. Key Responsibilities: Work to deliver CHECK penetration testing services Lean into non-CHECK work where necessary Work with the sales team to flesh out technical input as needed Deliver quality reports 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 ❯

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 own capabilities. Our Penetration Testers, work with organisations of all sizes and types … safeguard their assets. What you'll be doing: Providing professional cyber security consultancy to internal and external stakeholders. Leading the delivery of PGI's penetration testing for infrastructure testing. Collaborating on the design and delivery of new as well as existing service lines associated with offensive security assessments. Supporting … overseeing the development of their skills and competencies. Participating in the development or delivery of exercises - such as CTF challenges. Providing accurate scoping of penetration testing opportunities to sales colleagues for new and existing clients. Supporting sales colleagues with client pre-engagement activities including, proposals, presales activities such as More ❯

Cyber Security - Penetration Tester Location: Belfast Hybrid (2 days in office/client site as required) Type: Full-time | Flexible working hours | Hybrid Our client is a long established and independent cyber security firm based in Belfast. As the premier NCSC-approved supplier for CHECK Penetration Testing … secured several high-impact, multi-year contracts across Northern Ireland, they're strengthening their technical team to meet demand. They are looking for experienced Penetration Testers who are passionate about cyber security, thrive on technical challenges, and want to be part of a trusted and growing consultancy. What You … ll Be Doing: Conducting penetration tests across infrastructure, applications, cloud environments, mobile platforms and operational technology. Performing both manual and automated testing using a range of tools and techniques. Producing clear, concise reports with actionable remediation advice tailored to client needs. Engaging directly with clients to understand requirements and More ❯

Cyber Security - Penetration Tester Location: Belfast Hybrid (2 days in office/client site as required) Type: Full-time Flexible working hours Hybrid Cyber Guarded Ltd is a long established and independent cyber security firm based in Belfast. As the premier NCSC-approved supplier for CHECK Penetration … secured several high-impact, multi-year contracts across Northern Ireland, we re strengthening our technical team to meet demand. We re looking for experienced Penetration Testers who are passionate about cyber security, thrive on technical challenges, and want to be part of a trusted and growing consultancy. What You … ll Be Doing: Conducting penetration tests across infrastructure, applications, cloud environments, mobile platforms and operational technology. Performing both manual and automated testing using a range of tools and techniques. Producing clear, concise reports with actionable remediation advice tailored to client needs. Engaging directly with clients to understand requirements and More ❯

Since being acquired by Nomios in late 2024, Dionach by Nomios has continued its dynamic growth as a leading information security company. Specializing in penetration testing and information assurance services, we offer an incredible opportunity to be part of an experienced team, build your skills, and grow professionally. Dionach … If you require accommodations during the application process, let us know, and we'll work to meet your needs. What You'll Do Lead penetration testing teams to conduct penetration tests across various environments, including web applications, APIs, Cloud, and network infrastructure. Lead on-site customer engagements. Lead … years leading network, web, and internal penetrations tests as well as experience in leading customer engagements onsite. Leadership : Experience of supervising and mentoring penetration test teams. Training Experience : Ownership and leadership on developing and providing training courses. Tools : Proficiency with tools like Burpsuite Pro, Nessus, and other industry standards. More ❯

Since being acquired by Nomios in late 2024, Dionach by Nomios has continued its dynamic growth as a leading information security company. Specializing in penetration testing and information assurance services, we offer an incredible opportunity to be part of an experienced team, build your skills, and grow professionally. Dionach … If you require accommodations during the application process, let us know, and we'll work to meet your needs. What You'll Do Lead penetration testing teams to conduct penetration tests across various environments, including web applications, APIs, Cloud, and network infrastructure. Lead on-site customer engagements. Lead … years leading network, web, and internal penetrations tests as well as experience in leading customer engagements onsite. Leadership : Experience of supervising and mentoring penetration test teams. Training Experience : Ownership and leadership on developing and providing training courses. Tools : Proficiency with tools like Burpsuite Pro, Nessus, and other industry standards. More ❯

Since being acquired by Nomios in late 2024, Dionach by Nomios has continued its dynamic growth as a leading information security company. Specializing in penetration testing and information assurance services, we offer an incredible opportunity to be part of an experienced team, build your skills, and grow professionally. Dionach … If you require accommodations during the application process, let us know, and we'll work to meet your needs. What You'll Do Lead penetration testing teams to conduct penetration tests across various environments, including web applications, APIs, Cloud, and network infrastructure. Lead on-site customer engagements. Lead … years leading network, web, and internal penetrations tests as well as experience in leading customer engagements onsite. Leadership : Experience of supervising and mentoring penetration test teams. Training Experience : Ownership and leadership on developing and providing training courses. Tools : Proficiency with tools like Burpsuite Pro, Nessus, and other industry standards. More ❯

solutions. With a proven track record and strong client relationships, we are trusted by our clients to meet their goals. The role: As a Penetration Tester on Risk Crew, you'll be part of an elite team of security experts who are dedicated to identifying and mitigating security … cutting-edge security tools and technologies. Recognition and rewards for outstanding performance. Your responsibilities: Performing web application, infrastructure, cloud, API, wireless and mobile application penetration tests on a regular basis. Contributing to Red Team and social engineering testing. Report writing and client-facing presentation of test findings. Consulting clients … white papers and articles. Staying up to date with the latest security trends, technologies, and threats. Contributing to the evolution of the in-house penetration testing methodology and processes. Your mandatory technical skills: Ability to perform black box, grey box and white box tests with an attacker's mindset. More ❯

solutions. With a proven track record and strong client relationships, we are trusted by our clients to meet their goals. The role: As a Penetration Tester on Risk Crew, you'll be part of an elite team of security experts who are dedicated to identifying and mitigating security … cutting-edge security tools and technologies. Recognition and rewards for outstanding performance. Your responsibilities: Performing web application, infrastructure, cloud, API, wireless and mobile application penetration tests on a regular basis. Contributing to Red Team and social engineering testing. Report writing and client-facing presentation of test findings. Consulting clients … white papers and articles. Staying up to date with the latest security trends, technologies, and threats. Contributing to the evolution of the in-house penetration testing methodology and processes. Your mandatory technical skills: Ability to perform black box, grey box and white box tests with an attacker's mindset. More ❯

ReRoot Cyber is seeking a highly skilled and forward-thinking senior penetration tester to join one of the UK’s most respected testing teams. They are an impressive technical team with a genuinely collaborative culture who have the full backing from management to deliver nothing but value adding … service lines. If you thrive on bringing ideas to life, creating bespoke tools and adding true value to your clients, then this is the penetration testing team for you. This is a home based position with very very very limited travel. Full right to work in the UK is … required What you'll do: Deliver advanced penetration tests across varying environments (web app, inf, cloud) Play a key role in new and existing service line development. Collaborate with a team of brilliant minds to contribute to in-house testing methodologies. Stay ahead of emerging threats and continuously sharpen More ❯

My Client is a cybersecurity company who offer security services to multiple businesses across varying industries. They are now looking for a graduate Penetration Tester to join their growing team! Main Duties: Vulnerability Identification: Conduct thorough assessments to identify security vulnerabilities in networks, applications, and systems. Exploitation and More ❯

My Client is a cybersecurity company who offer security services to multiple businesses across varying industries. They are now looking for a graduate Penetration Tester to join their growing team! Main Duties: Vulnerability Identification: Conduct thorough assessments to identify security vulnerabilities in networks, applications, and systems. Exploitation and 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 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 systems. We offer … 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 More ❯

Since being acquired by Nomios in late 2024, Dionach by Nomios has continued its dynamic growth as a leading information security company. Specializing in penetration testing and information assurance services, we offer an incredible opportunity to be part of an experienced team, build your skills, and grow professionally. Dionach … the application process, let us know, and we'll work to meet your needs. What You'll Do Lead and mentor a team of Penetration testers, fostering a collaborative and high-performance work environment. Lead and oversee complex infrastructure penetration tests ensuring that they are conducted thoroughly and … tests, infrastructure tests, but also, social engineering. Ensure all testing activities comply with CHECK standards. What We're Looking For Experience : Significant experience in penetration testing, including network, web application and internal penetration testing as well as experience of leading customer engagements on-site. Communication : Strong verbal and More ❯

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 … 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 More ❯