26 to 50 of 196 Penetration Tester Jobs in the UK

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 ❯

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

Job Title: Penetration Tester Location: Leeds/Hybrid Reports To: Head of Cyber Services Salary: £55,000 - £60,000 Travel: Occasional client site visits About Us We're a rapidly growing cybersecurity reseller and MSP delivering cutting-edge security solutions across network, endpoint, cloud, and offensive security testing. Our mission: empower clients to expose and eliminate critical vulnerabilities … before attackers do. We're expanding our offensive security team and need an experienced Penetration Tester to deliver high-impact, real-world security assessments that drive tangible improvements. The Role - What You'll Own You will simulate sophisticated cyberattacks across client environments - from networks and web apps to cloud and endpoints - exposing weaknesses before adversaries can exploit them. … Your findings will guide clients to stronger, more resilient security postures. Lead internal and external penetration tests , including infrastructure, web, wireless, cloud, and social engineering. Execute red team, purple team, and breach simulation exercises tailored to client maturity and objectives. Identify and safely exploit vulnerabilities to demonstrate real business impact . Deliver clear, actionable reports tailored to both technical 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 ❯

Join our dynamic Offensive Security Team! As we expand, we are looking for a Pentester/Red Teamer who is enthusiastic about undertaking a range of security assessments, including penetration testing, red team exercises, vulnerability scanning, and physical access evaluations for our clients. Key Responsibilities: Client Engagement Management: Lead client projects, ensuring clear communication, timely delivery, and exceeding expectations. … Act as the primary liaison, providing updates and guidance. Security Assessment Execution: Conduct detailed security assessments, including penetration testing and vulnerability analysis. Systematically identify and document vulnerabilities across network, application, and physical layers. Prepare concise reports for both technical and non-technical stakeholders. Red Team Challenges: Participate in red team simulations, encompassing social engineering attacks and advanced penetration … security. Technical Proficiencies: Python/Scripting: Demonstrate a high level of proficiency in Python, essential for writing custom scripts to automate tasks, analyze data, and develop unique tools for penetration testing. This skill is crucial for tailoring attacks, parsing data, and creating efficient workflows in security assessments. Linux/Windows Proficiency: Have a thorough understanding of Linux/Windows More ❯

Senior Penetration Tester – Must be eligible to obtain security clearance We are looking for a Senior Penetration Tester/Ethical Hacker to work freelance for a company who delivers high-quality security solutions for an array of different clients from varied industries. Due to an unprecedented increase in workload, we are looking for a reliable Penetration Tester to work on overflow projects, delivering infrastructure penetration testing, including broader vulnerability assessments and security audits as needed. You will also produce clear, professional reports and deliver testing debriefs. This opportunity would suit someone who is already in a permanent position, looking for freelance work in addition to their main role, or someone who is happy … nature of work and client base, all applicants but be able to obtain SC clearance. Day rate: £400 - £500 per day, London – remote/hybrid Requirements Proven experience in Penetration Testing/Ethical Hacking Strong knowledge of network and cloud infrastructure security. Up-to-date on the latest cybersecurity threats and technologies. Strong knowledge in pen testing tools ( Metasploit More ❯

Senior Penetration Tester Must be eligible to obtain security clearance We are looking for a Senior Penetration Tester/Ethical Hacker to work freelance for a company who delivers high-quality security solutions for an array of different clients from varied industries. Due to an unprecedented increase in workload, we are looking for a reliable Penetration Tester to work on overflow projects, delivering infrastructure penetration testing, including broader vulnerability assessments and security audits as needed. You will also produce clear, professional reports and deliver testing debriefs. This opportunity would suit someone who is already in a permanent position, looking for freelance work in addition to their main role, or someone who is happy … nature of work and client base, all applicants but be able to obtain SC clearance. Day rate: £400 - £500 per day, London remote/hybrid Requirements Proven experience in Penetration Testing/Ethical Hacking Strong knowledge of network and cloud infrastructure security. Up-to-date on the latest cybersecurity threats and technologies. Strong knowledge in pen testing tools ( Metasploit More ❯

We are currently seeking a highly skilled and results-oriented Penetration Tester with at least 5 years of hands-on penetration testing experience. This is a rare opportunity to join a highly skilled and diverse security team committed to continuous growth and excellence in the field of offensive security. This role is office-based with occasional travel … to client site. Key Responsibilities Lead internal and external penetration tests, including web, mobile, infrastructure, wireless, cloud, and social engineering. Execute red team, purple team, and breach simulation exercises tailored to client maturity and objectives. Deliver detailed and actionable penetration testing reports Collaborate with clients to understand their specific security needs and present findings in a clear manner. … Develop and maintain security testing methodologies and procedures in alignment with industry best practices. Reviewed penetration test reports to ensure they are up to standard and meet test objectives. Mentor junior penetration testers. Assist in incident response activities, including investigation, containment, and remediation of security incidents. Conduct cloud security assessments. Essential Requirements Must be currently residing in mainland More ❯

Security Testing Consultant (Pen Tester) Location: London SE1 Salary: £45,000 - £60,000 depending on relevant experience Hours: Full-time, Monday to Friday Work Location: Office-based during probation, then hybrid (3 days office/2 days WFH) Full time/Permanent Remarkable Jobs are recruiting on behalf of a dynamic and growing cybersecurity organisation. We are seeking a … Security Testing Consultant (Pen Tester) to join their expert team in London SE1. This is a fantastic opportunity for an experienced professional to take on a varied, high-impact role conducting in-depth security assessments across multiple platforms. Security Testing Consultant (Pen Tester) Role: As a Security Testing Consultant (Pen Tester) , you will play a vital role … platforms, APIs, and mobile technologies. You'll be part of a collaborative team, providing expert guidance and helping to ensure the highest standards of cybersecurity. Security Testing Consultant (Pen Tester) Key Responsibilities: Deliver penetration testing across web, cloud, mobile, and infrastructure Conduct black box, grey box, and white box testing Produce detailed reports and deliver findings to clients More ❯

Penetration Tester (OSCP Certified) - Up to £45,000 DOE Location: UK fully remote Salary: Up to £45,000 per annum, dependent on experience Employment Type: Full-Time, Permanent Eligibility: UK Residents only (UK Passport or Indefinite Leave to Remain required) - Unfortunately, PSW Visas cannot be considered. A very exciting growth role for the right person! I'm an … experinced cyber recruiter (of 20 yrs+) ready to talk to qualified individuals. We are currently seeking an enthusiastic and technically capable Penetration Tester with at least 6 months of hands-on penetration testing experience and a strong interest in developing advanced technical skills. This is a rare opportunity to join a highly skilled and diverse security team … committed to continuous growth and excellence in the field of offensive security. Key Responsibilities: Conduct hands-on Web Application Penetration Testing Support and contribute to Infrastructure and Cloud Security Assessments Be mentored and trained towards Adversarial Simulation , Red Team Operations , and other advanced offensive security techniques Write detailed, clear, and professional reports for technical and non-technical stakeholders Collaborate More ❯

Penetration Tester - Remote About the Role Lorien are seeking a talented and motivated Penetration Tester to join our clients growing cybersecurity team on a fully remote basis (mainland UK only). You will be responsible for conducting ethical hacking and security testing engagements to identify vulnerabilities in client systems, applications, and infrastructure. This is an exciting … opportunity to work across a range of industries while further developing your skills in a supportive and professional environment. Key Responsibilities Plan and perform penetration tests on networks, web applications, APIs, cloud environments, and other systems. Deliver clear, actionable technical and executive reports to clients. Collaborate with internal teams to ensure quality and compliance with best practices. Stay up … CCTIM Certified Must be currently residing in mainland UK . Eligible for UK security clearance (must have been a UK resident for at least 5 years). Experience conducting penetration tests (web, infrastructure, external/internal). Strong knowledge of security testing methodologies and frameworks (e.g., OWASP, NIST). Proficiency with industry-standard tools (e.g., Burp Suite, Nmap, Metasploit More ❯

Penetration Tester - Remote About the Role Lorien are seeking a talented and motivated Penetration Tester to join our clients growing cybersecurity team on a fully remote basis (mainland UK only). You will be responsible for conducting ethical hacking and security testing engagements to identify vulnerabilities in client systems, applications, and infrastructure. This is an exciting … opportunity to work across a range of industries while further developing your skills in a supportive and professional environment. Key Responsibilities Plan and perform penetration tests on networks, web applications, APIs, cloud environments, and other systems. Deliver clear, actionable technical and executive reports to clients. Collaborate with internal teams to ensure quality and compliance with best practices. Stay up … CCTIM Certified Must be currently residing in mainland UK . Eligible for UK security clearance (must have been a UK resident for at least 5 years). Experience conducting penetration tests (web, infrastructure, external/internal). Strong knowledge of security testing methodologies and frameworks (e.g., OWASP, NIST). Proficiency with industry-standard tools (e.g., Burp Suite, Nmap, Metasploit More ❯

Penetration Tester (OSCP Certified) - Up to £45,000 DOE Location: UK fully remote Salary: Up to £45,000 per annum, dependent on experience Employment Type: Full-Time, Permanent Eligibility: UK Residents only (UK Passport or Indefinite Leave to Remain required) - Unfortunately, PSW Visas cannot be considered. A very exciting growth role for the right person! I'm an … experinced cyber recruiter (of 20 yrs+) ready to talk to qualified individuals. We are currently seeking an enthusiastic and technically capable Penetration Tester with at least 6 months of hands-on penetration testing experience and a strong interest in developing advanced technical skills. This is a rare opportunity to join a highly skilled and diverse security team … committed to continuous growth and excellence in the field of offensive security. Key Responsibilities: Conduct hands-on Web Application Penetration Testing Support and contribute to Infrastructure and Cloud Security Assessments Be mentored and trained towards Adversarial Simulation , Red Team Operations , and other advanced offensive security techniques Write detailed, clear, and professional reports for technical and non-technical stakeholders Collaborate More ❯

Lead Cyber Security Consultant - Penetration Tester (UK) - Dionach by Nomios 1 day ago Be among the first 25 applicants Direct message the job poster from Dionach This role offers flexibility to work remotely, with occasional visits to client sites. Alternatively, you can choose a hybrid arrangement and work from our offices in Oxford or Glasgow, if preferred. Why … join Dionach by Nomios? 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 by Nomios holds impressive certifications, including … environment for all our employees. 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 on developing and providing training More ❯

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

Role Overview: We are seeking a driven and technically proficient Penetration Tester. The ideal candidate will have solid experience in performing end-to-end Vulnerability Assessments and Penetration Testing (VAPT) across various environments, possess strong reporting and scripting skills, and demonstrate the ability to engage with clients during both pre-sales and project delivery phases. This is an … excellent opportunity for someone looking to grow their career within a CREST-accredited organization that delivers high-impact services to critical industries. Responsibilities: Penetration Testing & Security Assessments Plan, execute, and document penetration tests on web applications, mobile apps, APIs, infrastructure, cloud environments, and internal/external networks. (Black, Grey, White pentest) Perform source code reviews to uncover insecure … including technical scoping, requirement gathering, and proposal development. Participate in client-facing meetings to explain findings, provide mitigation advice, and manage expectations when needed. Requirements: Minimum 4 years of penetration testing experience CREST CRT and CPSA certified (preferred) Other Security certifications: OSCP, OSWP, HTB, CBBH, CISSP (Bonus) Red Team experience (Bonus) Strong knowledge of OWASP Top 10, MITRE ATT More ❯

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

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

Penetration Tester – UK Remote – £60,000 - £80,000 + Benefits Our client, a leading UK Cyber Security Consultancy, is looking for an experienced Mobile Application Penetration Tester to join their Offensive Security function. Our client offers a range of penetration testing services, including red teaming engagements, providing opportunities to work on diverse client projects and … lead engagements from the forefront. Key Responsibilities: Conduct mobile application penetration testing across Android and iOS platforms, assessing security vulnerabilities. Engage in red teaming exercises to simulate real-world attack scenarios against enterprise applications. Evaluate API security, network communications, cryptographic implementations, and mobile backend security. Perform manual and automated exploitation, including tampering, code injection, authentication bypass, and malware analysis. … Utilize industry-leading tools such as Burp Suite, MobSF, Frida, Objection, IDA Pro, and other mobile security frameworks. To Be Considered for This Role: Proven experience in penetration testing mobile applications, focusing on Android and iOS security. Expertise in reverse engineering, dynamic analysis, API security testing, and mobile exploit development. Familiarity with OWASP Mobile Top 10 and secure coding More ❯

Penetration Tester – UK remote - £60,000 - £80,000 + Benefits + Bonus Our client is looking for an experienced Penetration Tester to join their established Offensive Security function. This role involves conducting and delivering high-quality security assessments across web applications, infrastructure, mobile, cloud, and networks. Our client is looking for someone who has a wide … understanding of different types of security testing, and in-depth threat-intelligence knowledge. Main Responsibilities: Perform penetration tests on web applications, networks, APIs, cloud environments, and mobile platforms. Assist in red team exercises, social engineering assessments, and security awareness initiatives. Conduct vulnerability assessments, exploit security flaws, and document findings with actionable remediation steps. Simulate real-world attack scenarios to … develop custom scripts, tools, and exploits to test system defences. Work closely with security teams to remediate identified vulnerabilities. To be considered, you should have: 4+ years in a penetration testing position. Strong knowledge of OWASP Top 10, MITRE ATT&CK Framework, and common exploit techniques. Experience using tools such as Burp Suite, Metasploit, Kali Linux, Nmap, and Wireshark. More ❯

Role: Penetration Tester (Infrastructure Focus) 🛡️ Work Type & Location: Hybrid – London preferred (other UK cities possible) 🏙️ Role Type: Permanent 💼 Salary: £70,000–£105,000 (London) depending on experience 💰 Other regional packages available for Cambridge, Manchester, Bristol, or Edinburgh Our client – a global innovation consultancy – is expanding its Digital & Data capability and is on the lookout for an experienced Penetration Tester (Infrastructure Focus) to join a high-trust, hands-on team. This role is all about deep technical work inside live infrastructure environments – think Active Directory, internal networks, and sensitive systems where precision matters. If you’re the kind of tester who thrives in complex, undocumented environments and enjoys real-world impact over checkbox testing, this is … the challenge for you. 🔍 As a Penetration Tester (Infrastructure Focus), you will: Deliver internal infrastructure tests in high-risk, high-impact environments Focus on Active Directory, lateral movement, and privilege escalation techniques Communicate directly with clients to present findings and advise on remediation Produce clear, actionable reports for both technical and non-technical stakeholders Contribute to improving internal More ❯

Role: Penetration Tester (Infrastructure Focus) ️ Work Type & Location: Hybrid – London preferred (other UK cities possible) ️ Role Type: Permanent Salary: £70,000–£105,000 (London) depending on experience Other regional packages available for Cambridge, Manchester, Bristol, or Edinburgh Our client – a global innovation consultancy – is expanding its Digital & Data capability and is on the lookout for an experienced Penetration Tester (Infrastructure Focus) to join a high-trust, hands-on team. This role is all about deep technical work inside live infrastructure environments – think Active Directory, internal networks, and sensitive systems where precision matters. If you’re the kind of tester who thrives in complex, undocumented environments and enjoys real-world impact over checkbox testing, this is … the challenge for you. As a Penetration Tester (Infrastructure Focus), you will: Deliver internal infrastructure tests in high-risk, high-impact environments Focus on Active Directory, lateral movement, and privilege escalation techniques Communicate directly with clients to present findings and advise on remediation Produce clear, actionable reports for both technical and non-technical stakeholders Contribute to improving internal More ❯

Penetration Tester £up to £100,000 GBP Bonus Hybrid WORKING Location: United Kingdom (Greater London) Type: Permanent Role: Penetration Tester (Infrastructure Focus) Work Type & Location: Hybrid - London preferred (other UK locations considered) Role Type: Permanent Start Date: Immediate Anson McCade is proud to be supporting a global innovation and transformation consultancy in growing their elite Digital … Data team. We're seeking a Penetration Tester with a deep focus on infrastructure and Active Directory environments. This isn't your typical web app testing role-this is hands-on, internal infrastructure testing in high-stakes client environments (defence, critical infrastructure, national security). This is a high-trust, high-impact role for someone confident in navigating … sensitive networks, with the ability to think independently, consult directly with clients, and deliver clear, actionable insights. As a Penetration Tester, you will: • Deliver internal infrastructure penetration tests, including Active Directory environments • Act as a trusted advisor to clients-this is a hands-on consulting-facing role • Document clear, concise technical reports for both technical and non More ❯