19 of 19 Penetration Tester Jobs

Penetration Tester CTM Level - Wokingham, UK Key Points Up to £470 per day, 7-month contract Hybrid model, 3 days onsite and 2 remote Seeking a Penetration Tester at CTM level with strong consultancy skills Active SC Clearance required About the Client Our client is a respected organisation operating within a highly regulated and security focused … Their teams support a wide range of technical services that help strengthen critical digital operations. With growing demand across their security programmes, they are now searching for an experienced Penetration Tester to join their established team. The Benefits Exposure to varied testing engagements Collaborative and supportive technical environment Opportunity to deliver high impact security testing across complex environments … The Penetration Tester Role As the Penetration Tester you will carry out a full range of technical security assessments across infrastructure, applications and networks, using manual and automated techniques to help identify and manage vulnerabilities. You will contribute to research activity, maintain current knowledge of threat trends, produce clear reports and communicate findings effectively to technical More ❯

Penetration Tester (OSCP) Location: Remote Position Type: Full-time Reports to: Senior Penetration Tester About the Organisation A high-growth security consultancy working across government, space programmes, and FTSE 100 organisations is expanding its offensive security function. The team delivers complex, high-impact testing and simulation work for clients across the UK, US, and Europe. With … retention, and a track record of delivering cutting-edge work, this is an opportunity to develop quickly in a technically challenging environment. Role Overview We’re looking for a Penetration Tester/Red Team Consultant with 1–3 years’ experience who thrives on variety, problem-solving, and continuous learning. You’ll deliver offensive security assessments, red team operations … Responsibilities Deliver red team, purple team, and wider offensive security engagements. Conduct attack simulations, threat modelling, and targeted technical testing. Carry out occasional physical security assessments. Produce high-quality penetration testing and red team reports. Communicate findings clearly to both technical and non-technical stakeholders. Support the development of offensive security services and internal methodologies. Contribute to R&D More ❯

Penetration Tester | £40K–£60K + Bonus + Hybrid/remote We’re hiring a Penetration Tester to join one of the UK’s most respected, CREST-accredited cyber security consultancies. You’ll work across public and private sector projects, helping clients identify vulnerabilities, strengthen defences, and build resilience against real-world attacks. This role offers autonomy … variety, and technical depth — all within a collaborative team that genuinely values knowledge sharing, personal growth, and work-life balance. What You’ll Do Conduct penetration tests across web apps, APIs, networks, cloud, and mobile platforms. Participate in Red Team and social engineering engagements. Deliver clear, actionable reports and guide clients through remediation. Contribute to scoping calls, proposals, and … client presentations. Mentor junior testers and help shape the consultancy’s internal security capability. What You’ll Bring 2–5 years’ experience in ethical hacking or penetration testing. Strong understanding of OWASP, web, and infrastructure testing. Experience with Burp Suite, Nmap, Nessus, Qualys, Metasploit, Kali Linux. Familiarity with cloud security (AWS, Azure, or GCP). Confident communicator with client More ❯

Penetration Tester – Bristol | Full-Time | Hybrid with Client Travel Salary: £30,000 - £65,000pa (Depending on experience) My client is a UK-based technology and cybersecurity consultancy delivering cutting-edge solutions across sectors including telecoms, finance, defence, rail, and aerospace. With expertise in cybersecurity, software development, and R&D, they work on some of the most critical and … challenging projects in the UK and beyond. The Role They’re looking for an experienced Penetration Tester to join their expert team in Bristol. You’ll be responsible for conducting advanced penetration tests, red team exercises, and vulnerability assessments, helping clients strengthen their defences and reduce risk. What You’ll Do Perform penetration testing across networks … assessments and red teaming activities Create detailed reports and communicate findings clearly to clients Contribute to internal research and tool development What You’ll Bring 2+ years’ experience in penetration testing or vulnerability assessment CHECK, CREST, or equivalent certification Strong technical understanding of networks, OS, and security tools (Metasploit, Burp Suite, Nmap, etc.) Excellent communication and problem-solving skills More ❯

Job Description Penetration Tester – Bristol | Full-Time | Hybrid with Client Travel Salary: £30,000 - £65,000pa (Depending on experience) My client is a UK-based technology and cybersecurity consultancy delivering cutting-edge solutions across sectors including telecoms, finance, defence, rail, and aerospace. With expertise in cybersecurity, software development, and R&D, they work on some of the most … critical and challenging projects in the UK and beyond. The Role They're looking for an experienced Penetration Tester to join their expert team in Bristol. You'll be responsible for conducting advanced penetration tests, red team exercises, and vulnerability assessments, helping clients strengthen their defences and reduce risk. What You'll Do Perform penetration testing … assessments and red teaming activities Create detailed reports and communicate findings clearly to clients Contribute to internal research and tool development What You'll Bring 2+ years' experience in penetration testing or vulnerability assessment CHECK, CREST, or equivalent certification Strong technical understanding of networks, OS, and security tools (Metasploit, Burp Suite, Nmap, etc.) Excellent communication and problem-solving skills More ❯

Role: Penetration Tester Duration: 12 month Contract Pay: Up to £500 per day (Outside IR35) Location: Fully Remote Excellent long term contract for an experienced Penetration Tester to support a large-scale international security programme, delivering high-quality offensive security assessments across applications, infrastructure, and networks. You'll be joining a specialist team responsible for delivering … structured penetration tests, vulnerability assessments and security design reviews. Working within a defined AGILE sprint model, you will plan, execute and report on testing activities, producing clear technical findings, risk assessments and remediation guidance. Strong communication skills are essential, as you'll deliver briefs to both technical teams and senior stakeholders. The role requires hands-on experience with modern … penetration testing tools and recognised methodologies, along with the ability to identify and exploit vulnerabilities across operating systems, networks, applications, and protocols. A background in scripting (Python, Go, PowerShell or shell) is highly desirable. Key Requirements: Strong experience in web and infrastructure penetration testing Proficiency with offensive security tooling and methodologies Ability to produce clear, structured, executive-level More ❯

Are you an aspiring penetration tester looking to work with real threats, real tools, and real impact? You ll be joining a growing cyber security consultancy focused exclusively on keeping critical national infrastructure secure. You ll support a team of expert ethical hackers, helping test systems, applications, and networks for vulnerabilities - working alongside seasoned professionals while sharpening your … vulnerability assessments, and support threat hunting within a well-established SOC. You'll develop your skills using industry-standard tools, investigate incidents, and provide actionable remediation advice. Role: Junior Penetration Tester Location: London/Hybrid Salary: £30,000 - £50,000 (DOE) Ideally, you ll have: 6+ months of proven penetration or security testing experience Knowledge of Metasploit More ❯

Are you an aspiring penetration tester looking to work with real threats, real tools, and real impact? You’ll be joining a growing cyber security consultancy focused exclusively on keeping critical national infrastructure secure. You’ll support a team of expert ethical hackers, helping test systems, applications, and networks for vulnerabilities - working alongside seasoned professionals while sharpening your … vulnerability assessments, and support threat hunting within a well-established SOC. You'll develop your skills using industry-standard tools, investigate incidents, and provide actionable remediation advice. Role: Junior Penetration Tester Location: London/Hybrid Salary: £30,000 - £50,000 (DOE) Ideally, you’ll have: 6+ months of proven penetration or security testing experience Knowledge of Metasploit More ❯

Penetration Tester £55,000 - 65,000 GBP Hybrid WORKING Location: Central London, Greater London - United Kingdom Type: Permanent Role: Pen Tester Location: London Salary: 55K - 65K Working Pattern: Hybrid The Opportunity: We are looking for an experienced Pen Tester to join a global Cyber Technical Services team that supports National Security, Defence, and Critical Infrastructure sectors. … You will be responsible for delivering comprehensive security testing engagements, applying your expertise to safeguard vital systems. What You Will Do as a Pen Tester: Lead end-to-end security testing projects including scoping, execution, and reporting Conduct application, infrastructure, and intelligence-led tests to identify vulnerabilities Produce clear technical and non-technical reports for diverse stakeholders Ensure safe … tools and develop improvements in scripts and techniques Collaborate with Threat Intelligence, Incident Response, and broader security teams to share knowledge What We Look For in a good Pen Tester: Proven experience in delivering security testing projects and understanding client risk mitigation needs Technical skills in adversary emulation, vulnerability discovery, and reverse engineering CHECK Team Leader status or equivalent More ❯

Are you an aspiring penetration tester looking to work with real threats, real tools, and real impact? You’ll be joining a growing cyber security consultancy focused exclusively on keeping critical national infrastructure secure. You’ll support a team of expert ethical hackers, helping test systems, applications, and networks for vulnerabilities - working alongside seasoned professionals while sharpening your … conduct vulnerability assessments, and support threat hunting within a well-established SOC. You'll develop your skills using industry-standard tools, investigate incidents, and provide actionable remediation advice.Role: Junior Penetration TesterLocation: London/HybridSalary: £30,000 - £50,000 (DOE)Ideally, you’ll have: 6+ months of proven penetration or security testing experience Knowledge of Metasploit, Burp Suite, and More ❯

you're located within a commutable distance of one of our offices so that we're able to interact and collaborate in person. About the Role As an experienced Penetration Tester you will be working with talented cyber security professionals to protect Starling customers, company assets and systems using the latest technologies and techniques. The primary objective for … is to collaborate with, support, and guide Starling's engineering and operation functions to ensure our services are designed, developed and operated securely. As an experienced member of our penetration testing team you will directly interact with multiple areas of the business to understand requirements, define the scope and approach to testing (including undertaking appropriate research), and produce reporting … information aligned to our risk framework. In addition, we understand the importance of knowledge and expertise remaining current and you shall support the continued advancement of our penetration testing through research, design and implementation of new solutions, including automation. Responsibilities Scoping and performing mobile, web application, cloud, and infrastructure penetration tests. Automation of security testing, and development of More ❯

We are looking to hire two Lead Penetration Testers with CTL Certification. This is a chance to join a well-established cybersecurity team that supports organisations across both public and private sectors. You’ll play a key role in delivering high-quality penetration testing that helps clients stay secure in a fast-moving threat landscape. Role Overview: Role … Lead Penetration Tester (CTL Certified) Location: Remote with ad-hoc travel to client sites. Package: £55,000- £70,000 per annum & benefits. Industry: Cyber Security/Managed Security Services. What You’ll Be Doing: Deliver a wide range of penetration testing engagements for commercial and government clients. Produce clear, detailed reports outlining risks, impact, and practical remediation … hands-on testing experience, is essential. Candidates must be eligible for Security Clearance; this is essential. Full UK Driving License & Access to a vehicle is essential. Strong understanding of penetration testing methodologies, tools, and frameworks. Broad technical knowledge across networking, operating systems (especially *Nix), and security fundamentals. Ability to communicate clearly with stakeholders at all levels, including technical teams More ❯

Position Summary As an Associate Penetration Tester at Claranet, you will able to deliver you own web application tests and through training and partnering, you will have the opportunity to become involved in a full range of testing work from mobile app and infrastructure testing to social engineering and Red Team exercises. Role Mission Claranet’s strategy is … be self-motivated and able to work in an independent manner as well as part of a team Excellent written and oral communications skills Positive, collaborative and enthusiastic Conducting penetration testing work out of normal office hours on occasion Willing to travel to deliver onsite work as required Appetite to shadow, train and develop to improve capabilities into all More ❯

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 … their testing outputs. The company have an office in Cheltenham however you are welcome to work where is best for you. Job Details 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 to customers. Stay up to … Skills Currently holds a CHECK equivalency certification. Eligibility to hold or currently hold clearance. Experience working with Linux and Windows OS. Strong understanding of working with common tooling for penetration testing. Ideally, a knowledge of Cloud services such as Azure or AWS. Capability to script or code in Bash, Python etc. Appreciation for Cyber Security standards such as ISO27001 More ❯

Security Clearance - must be in the UK from 3 to 5 years. Job Description ?Mandatory Skills: Penetration Testing - PT ?Experience: 5-8 Years Job Description Coordinate with the team to scope and executing Pentest end to end, producing documentation Working knowledge of Jira , SNOW and confluence. Experience in regulatory compliance environment Experience working in API testing , Network technologies and More ❯

Penetration Testers - Dublin €55-100k with benefits Applicants must be able to work in Ireland unrestricted and if not in Ireland willing to relocate Are you a technically gifted ethical hacker with a passion for breaking things to make them stronger? Our client is expanding their Offensive Security team and looking for experienced Penetration Testers to lead … complex environments. In this role, you ll simulate advanced adversaries, uncover critical vulnerabilities, and provide strategic guidance to help organisations build real cyber resilience. What You ll Do Conduct penetration tests across infrastructure, applications, cloud, and APIs. Translate technical findings into clear, actionable insights for both technical teams and executives. Provide strategic remediation advice to strengthen long-term security … to enhance offensive capabilities. Mentor team members and contribute to methodology improvements. Support pre-sales and technical scoping (Senior level). What We re Looking For 5+ years in penetration testing or offensive security. Strong hands-on experience with tools like Burp, Nmap, Metasploit, Cobalt Strike, Nessus, etc. Deep knowledge of OWASP, MITRE ATT&CK, and modern attack techniques. More ❯

Penetration Testers - Dublin €55-100k with benefits **Applicants must be able to work in Ireland unrestricted and if not in Ireland willing to relocate** Are you a technically gifted ethical hacker with a passion for breaking things to make them stronger? Our client is expanding their Offensive Security team and looking for experienced Penetration Testers to lead … complex environments. In this role, you’ll simulate advanced adversaries, uncover critical vulnerabilities, and provide strategic guidance to help organisations build real cyber resilience. What You’ll Do Conduct penetration tests across infrastructure, applications, cloud, and APIs. Translate technical findings into clear, actionable insights for both technical teams and executives. Provide strategic remediation advice to strengthen long-term security … to enhance offensive capabilities. Mentor team members and contribute to methodology improvements. Support pre-sales and technical scoping (Senior level). What We’re Looking For 5+ years in penetration testing or offensive security. Strong hands-on experience with tools like Burp, Nmap, Metasploit, Cobalt Strike, Nessus, etc. Deep knowledge of OWASP, MITRE ATT&CK, and modern attack techniques. More ❯

Security Clearance - must be in the UK from 3 to 5 years. Job Description ?Mandatory Skills: Penetration Testing - PT ?Experience: 5-8 Years Job Description Coordinate with the team to scope and executing Pentest end to end, producing documentation Working knowledge of Jira , SNOW and confluence click apply for full job details More ❯

pressurised environment whilst working towards and achieving deadlines. Use of MS Office software such as Word, Excel, Powerpoint The ability to travel to Client customer locations. Strong knowledge of penetration testing tools including (Burpsuite, Metasploit, Nmap) etc Good knowledge of multiple Operating Systems (OS) including Windows &.NIX Ability to configure network devices, Firewalls, IDS/IPS devices and wireless More ❯