1 to 25 of 260 Penetration Testing Jobs in the UK

We foster a culture of innovation, collaboration, recognition and inclusivity and offer a wide range of benefits to support staff wellbeing. PURPOSE OF JOB: Bytes is a CREST-certified penetration testing organisation with ambitious growth and expansion plans. We are looking for motivated individuals to join our testing team and work with a wide range of customers … across all aspects of penetration testing. This role offers the opportunity to be part of a highly skilled and collaborative team, delivering high-quality testing and security consulting services in real-world environments. We welcome candidates with either a broad set of skills or a focus on specific areas within penetration testing. Whether you're experienced or … looking to grow, this role is ideal for anyone who has been providing penetration testing or security consulting services and wants to gain further experience, achieve new certifications, or simply work with a great team. You will be working under the guidance of a team leader or Head of Assurance testing and will be actively involved in More ❯

of innovation, collaboration, recognition and inclusivity and offer a wide range of benefits to support staff wellbeing. Your Future Starts Here PURPOSE OF JOB: Bytes is a CREST-certified penetration testing organisation with ambitious growth and expansion plans. We are looking for motivated individuals to join our testing team and work with a wide range of customers … across all aspects of penetration testing. This role offers the opportunity to be part of a highly skilled and collaborative team, delivering high-quality testing and security consulting services in real-world environments. We welcome candidates with either a broad set of skills or a focus on specific areas within penetration testing. Whether you're experienced or … looking to grow, this role is ideal for anyone who has been providing penetration testing or security consulting services and wants to gain further experience, achieve new certifications, or simply work with a great team. You will be working under the guidance of a team leader or Head of Assurance testing and will be actively involved in More ❯

Role: Penetration Testing Account Manager Location: UK Wide (Remote + Rare Travel) Salary: £40,000 - £45,000 + Commission (8-10%) Network IT is recruiting for a Penetration Testing Account Manager to manage and grow relationships with major enterprise clients within a leading cyber security services provider. This role is ideal for someone who understands penetration testing, vulnerability management or offensive security services — and enjoys working closely with customers to drive long-term success. The role is 75% account management/25% new business , focusing primarily on nurturing and expanding existing client relationships while identifying new opportunities for growth within established accounts and adjacent sectors. Key Responsibilities Own and develop relationships with large enterprise … clients , acting as their trusted advisor across penetration testing and offensive security services. Understand client requirements and work with technical delivery teams to scope and coordinate engagements. Identify upsell and cross-sell opportunities across additional security services, assessments, and consultancy offerings. Drive renewals, retention and expansion across assigned accounts. Support new business activity by engaging warm inbound leads More ❯

Penetration Tester - CTM, NCSE, Penetration testing, CPSA, CRT - £55,000 - £65,000 - Homebased Are you an ambitious individual with a passion for uncovering vulnerabilities and strengthening digital defences? As a Penetration Tester you will be playing a key role in protecting our clients' critical systems. Working in a fast-paced environment you will be working on … clients that you could be engaged with both Public and Private Sector, some are one off engagements sometimes there will be multiyear engagements. Key Skills Hands-on experience in penetration testing or IT Health Check delivery Eligibility to obtain and maintain UK security clearances. Familiarity with common tools such as Burp Suite, Nmap, Nessus, Metasploit, etc. Understanding of … network protocols (TCP/IP, OSI model) and common web application Current penetration testing qualification such as Crest Practitioner Security Analyst (CPSA), Crest Registered Tester (CRT), or Cyber Scheme Team Member (CSTM). Exceptional documentation of your results and deliver the results to the client Ability to have technical chats with non-technical individuals to enable them to More ❯

Principal Offensive Security Consultant £100k Location: Hybrid (2 days per month in London) Salary: £80,000 - £100,000 + benefits Are you a Senior Offensive Security Consultant or Principal Penetration Tester ready to take the next step into Red Teaming and Adversarial Simulation ? This is your opportunity to join an agile, rapidly growing UK cyber security consultancy where you … to research and tooling that truly make an impact. About the Role As a Senior/Principal Offensive Consultant , you'll lead complex technical engagements that go beyond standard penetration testing - focusing on advanced exploitative infrastructure testing , Active Directory compromise , and assumed breach assessments . You'll work directly with clients to scope, plan, and deliver high … impact projects, while helping to expand the organisation's Red Team and adversarial simulation services . Key Responsibilities: Lead and deliver high-level infrastructure and Active Directory penetration testing engagements. Conduct advanced exploitative testing , lateral movement analysis, and privilege escalation within real-world environments. Support presales activity - crafting scopes, proposals, and technical solutions aligned with client objectives. More ❯

Principal Offensive Security Consultant £100k Location: Hybrid (2 days per month in London) Salary: £80,000 - £100,000 + benefits Are you a Senior Offensive Security Consultant or Principal Penetration Tester ready to take the next step into Red Teaming and Adversarial Simulation This is your opportunity to join an agile, rapidly growing UK cyber security consultancy where you … to research and tooling that truly make an impact. About the Role As a Senior/Principal Offensive Consultant , you'll lead complex technical engagements that go beyond standard penetration testing - focusing on advanced exploitative infrastructure testing , Active Directory compromise , and assumed breach assessments . You'll work directly with clients to scope, plan, and deliver high … impact projects, while helping to expand the organisation's Red Team and adversarial simulation services . Key Responsibilities: Lead and deliver high-level infrastructure and Active Directory penetration testing engagements. Conduct advanced exploitative testing , lateral movement analysis, and privilege escalation within real-world environments. Support presales activity - crafting scopes, proposals, and technical solutions aligned with client objectives. More ❯

Japan. Our team of hands-on experts helps a blue chip client base of global OEMs and suppliers secure next-generation vehicles and mobility solutions through cybersecurity-by-design, testing and validation, competitive benchmarking and cutting-edge research and development. You will join at an exciting phase in our journey, with an opportunity to play a key role in … and experience An exciting opportunity to apply your technical cybersecurity expertise on cutting-edge projects with leading automotive clients. In this hands-on engineering role, you will apply advanced penetration testing, benchmarking, PoC development and security engineering techniques to evaluate and strengthen the resilience of next-generation automotive technologies. You will conduct in-depth assessments of diverse systems … a key role in shaping the security of future mobility solutions worldwide. The Role The position is predominantly lab-based, with responsibilities including: Planning and executing a variety of penetration testing projects on vehicle components and associated telematics infrastructure including whole vehicles. Performing technical benchmarking of components, systems and vehicles. Developing cybersecurity proof-of-concepts. Providing cybersecurity recommendations More ❯

Japan. Our team of hands-on experts helps a blue chip client base of global OEMs and suppliers secure next-generation vehicles and mobility solutions through cybersecurity-by-design, testing and validation, competitive benchmarking and cutting-edge research and development. You will join at an exciting phase in our journey, with an opportunity to play a key role in … and experience An exciting opportunity to apply your technical cybersecurity expertise on cutting-edge projects with leading automotive clients. In this hands-on engineering role, you will apply advanced penetration testing, benchmarking, PoC development and security engineering techniques to evaluate and strengthen the resilience of next-generation automotive technologies. You will conduct in-depth assessments of diverse systems … a key role in shaping the security of future mobility solutions worldwide. The Role The position is predominantly lab-based, with responsibilities including: Planning and executing a variety of penetration testing projects on vehicle components and associated telematics infrastructure including whole vehicles. Performing technical benchmarking of components, systems and vehicles. Developing cybersecurity proof-of-concepts. Providing cybersecurity recommendations More ❯

Japan. Our team of hands-on experts helps a blue chip client base of global OEMs and suppliers secure next-generation vehicles and mobility solutions through cybersecurity-by-design, testing and validation, competitive benchmarking and cutting-edge research and development. You will join at an exciting phase in our journey, with an opportunity to play a key role in … and experience An exciting opportunity to apply your technical cybersecurity expertise on cutting-edge projects with leading automotive clients. In this hands-on engineering role, you will apply advanced penetration testing, benchmarking, PoC development and security engineering techniques to evaluate and strengthen the resilience of next-generation automotive technologies. You will conduct in-depth assessments of diverse systems … a key role in shaping the security of future mobility solutions worldwide. The Role The position is predominantly lab-based, with responsibilities including: Planning and executing a variety of penetration testing projects on vehicle components and associated telematics infrastructure including whole vehicles. Performing technical benchmarking of components, systems and vehicles. Developing cybersecurity proof-of-concepts. Providing cybersecurity recommendations More ❯

Hawksworth are now recruiting for a Security Vulnerability and Penetration Testing Engineer for a Permanent opportunity with a leading Law firm. Salary depending on suitability and experience, but the range is between 80,000 and 100,000 base salary. Location: Belfast preferred. Alternatively Remote Main responsibilities: Perform security penetration testing of the Firms systems, platforms, and … of OWASP, CVE, general security controls, and other foundational topics, such as the latest application and operating system exploits 3 to 5 years of relevant experience in Web Application penetration testing or 2 years relevant experience plus 3+ years overall IT experience. Can create/write report, articulate and explain technical findings to non-technical people. CISP and More ❯

Hawksworth are now recruiting for a ‘Security Vulnerability and Penetration Testing Engineer’ for a Permanent opportunity with a leading Law firm. Salary depending on suitability and experience, but the range is between £80,000 and £100,000 base salary. Location: Belfast preferred. Alternatively Remote Main responsibilities: Perform security penetration testing of the Firm’s systems, platforms … of OWASP, CVE, general security controls, and other foundational topics, such as the latest application and operating system exploits 3 to 5 years of relevant experience in Web Application penetration testing or 2 years relevant experience plus 3+ years overall IT experience. Can create/write report, articulate and explain technical findings to non-technical people. CISP and More ❯

Poole, Dorset (Hybrid – 3 days/week in the office) You don’t just spot vulnerabilities, you close them before they become a problem. Whether it’s penetration testing, access controls, or a misconfigured firewall, you’ve got the mindset and the method to lock things down. You understand the bigger picture of what security means in a … Dorset (hybrid - 3 days/week in the office) Scope : Work across IT, application, cloud, and physical security, no siloed remits here Responsibility : Be the go-to person for penetration testing, compliance audits, and vulnerability management Environment : Modern SaaS product environment, working alongside DevOps, engineering, and IT Growth : Get stuck into a wide variety of work, with support … from leadership and autonomy to make a real impact What you’ll be doing: Leading vulnerability assessments and coordinating regular penetration testing across systems and products Owning risk remediation actions, from security audits to PCI scans and compliance reporting Working across cloud (AWS), infrastructure, and software environments to ensure security best practices are embedded throughout Supporting the secure More ❯

Penetration Tester - Leading Managed Services Provider Remote based. Salary: Up to 60k, depending on experience. A leading Managed Services Provider are seeking to recruit a technically skilled Cyber Security/Penetration Tester. This is a fantastic opportunity to join a well-established organisation delivering high-quality security services to enterprise clients across the UK. As a Penetration Tester, you will be responsible for conducting manual penetration testing across both application and infrastructure layers. You will contribute to secure build reviews, advise on secure design practices, and provide technical insight to both internal teams and clients. Key Responsibilities Perform manual penetration testing of web applications and infrastructure Conduct security build reviews across common … and concise technical reports for a range of stakeholders Collaborate with internal teams and clients to support remediation and secure development Required Skills and Experience Proven experience in manual penetration testing (application and infrastructure) Strong understanding of TCP/IP and core networking principles Extensive experience testing web-based applications Familiarity with secure configuration and build reviews More ❯

Penetration Tester - Leading Managed Services Provider Remote based. Salary: Up to 60k, depending on experience. A leading Managed Services Provider are seeking to recruit a technically skilled Cyber Security/Penetration Tester. This is a fantastic opportunity to join a well-established organisation delivering high-quality security services to enterprise clients across the UK. As a Penetration Tester, you will be responsible for conducting manual penetration testing across both application and infrastructure layers. You will contribute to secure build reviews, advise on secure design practices, and provide technical insight to both internal teams and clients. Key Responsibilities Perform manual penetration testing of web applications and infrastructure Conduct security build reviews across common … and concise technical reports for a range of stakeholders Collaborate with internal teams and clients to support remediation and secure development Required Skills and Experience Proven experience in manual penetration testing (application and infrastructure) Strong understanding of TCP/IP and core networking principles Extensive experience testing web-based applications Familiarity with secure configuration and build reviews More ❯

Network Security Engineer Network Security/Penetration Testing/CREST/CSTL/API Testing/Config Reviews/Infrastructure/Outside IR35/West London We’re seeking an experienced Network Security Engineer to support a major multi-phase security testing project. You’ll conduct penetration tests, configuration reviews, and infrastructure assessments, contributing to … a high-profile programme of work extending into next year. Required Strong background in network and infrastructure security. Experience performing penetration testing, configuration reviews, and API testing. Knowledge of “classic” CHECK-style testing methodologies. CREST, CSTL or CTL certification (Team Member or Team Leader level). Ability to deliver high-quality reports and communicate technical findings clearly. … Hands-on experience across infrastructure, networking, and external testing. Desirable Experience working within CHECK or other accredited testing schemes. Strong understanding of secure network architecture and hardening practices. Previous consultancy or project-based testing experience. Contract Details Outside IR35 West London (on-site presence required for majority of testing) 0-hours contract – project-based work, phase by More ❯

Network Security Engineer Network Security/Penetration Testing/CREST/CSTL/API Testing/Config Reviews/Infrastructure/Outside IR35/West London We’re seeking an experienced Network Security Engineer to support a major multi-phase security testing project. You’ll conduct penetration tests, configuration reviews, and infrastructure assessments, contributing to … a high-profile programme of work extending into next year. Required Strong background in network and infrastructure security. Experience performing penetration testing, configuration reviews, and API testing. Knowledge of “classic” CHECK-style testing methodologies. CREST, CSTL or CTL certification (Team Member or Team Leader level). Ability to deliver high-quality reports and communicate technical findings clearly. … Hands-on experience across infrastructure, networking, and external testing. Desirable Experience working within CHECK or other accredited testing schemes. Strong understanding of secure network architecture and hardening practices. Previous consultancy or project-based testing experience. Contract Details Outside IR35 West London (on-site presence required for majority of testing) 0-hours contract – project-based work, phase by More ❯

Network Security Engineer Network Security/Penetration Testing/CREST/CSTL/API Testing/Config Reviews/Infrastructure/Outside IR35/West London We’re seeking an experienced Network Security Engineer to support a major multi-phase security testing project. You’ll conduct penetration tests, configuration reviews, and infrastructure assessments, contributing to … a high-profile programme of work extending into next year. Required Strong background in network and infrastructure security. Experience performing penetration testing, configuration reviews, and API testing. Knowledge of “classic” CHECK-style testing methodologies. CREST, CSTL or CTL certification (Team Member or Team Leader level). Ability to deliver high-quality reports and communicate technical findings clearly. … Hands-on experience across infrastructure, networking, and external testing. Desirable Experience working within CHECK or other accredited testing schemes. Strong understanding of secure network architecture and hardening practices. Previous consultancy or project-based testing experience. Contract Details Outside IR35 West London (on-site presence required for majority of testing) 0-hours contract – project-based work, phase by More ❯

Senior Security Consultant Penetration Testing (Web, API & Product Security) Location: Remote (UK) | Competitive Salary + Bonus + Training & Certs Join a CREST-accredited Cyber Security consultancy delivering high-quality penetration testing services across web, mobile, cloud and product environments for organisations in finance, healthcare, SaaS and critical infrastructure. They are looking for a Senior Penetration … with strong commercial experience who is keen to advance their career into more Red Team/Offensive security engagements . Youll take a lead role in delivering assessments, improving testing approaches, and guiding junior team members, while gaining the opportunity to participate in red team activities as part of your growth. What youll do: Deliver Web Application and API … penetration tests , including complex and modern architectures. Lead assessments across infrastructure, cloud and product security , identifying and exploiting real-world risks. Produce high-quality reports and communicate findings clearly to both technical and non-technical stakeholders. Support offensive security tooling improvements and internal research initiatives. Mentor junior testers and play a key part in continuous improvement across testing More ❯

ReRoot Cyber is seeking highly skilled and forward-thinking CHECK Team Members to join one of the UK’s most respected testing teams. This is an independent, privately owned testing consultancy led by industry-recognised names who are hackers at heart. This team is led by an active penetration tester who understands the niggles of day penetration testing operations. As a result, engagements are centred around making your day-to-day responsibilities as easy as possible, with a pure focus on value added testing. Most of your time will be spent on advanced testing and large-scale engagements that give you the opportunity to collaborate with wider technologists. (engineers, developers and blue teamers) They … but that’s not where they phish. 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 & public sector work. Full right to work in the UK is required More ❯

in the UK, offering the opportunity to work across a diverse range of client environments from enterprise networks to public sector systems. Youll be responsible for delivering hands-on penetration testing engagements, identifying vulnerabilities through systematic and innovative testing, and translating technical findings into meaningful business insights. The role offers strong progression opportunities, access to industry-recognised … All services are designed, implemented, and supported by in-house specialists using a privately owned, state-of-the-art national infrastructure. What Youll Be Doing: Conduct end-to-end penetration testing across infrastructure, web applications, and internal networks Lead or support security testing engagements and deliver concise, high-quality reports Translate technical findings into clear business impact … vulnerabilities, exploits, and industry best practices Contribute to internal development of tools, research, and process improvement initiatives What Were Looking For: 12 years of hands-on experience in manual penetration testing (infrastructure and/or web applications) Strong understanding of TCP/IP, networking concepts, and web application architecture Familiarity with tools such as Burp Suite, Nmap, Metasploit More ❯

the UK, offering the opportunity to work across a diverse range of client environments — from enterprise networks to public sector systems. You’ll be responsible for delivering hands-on penetration testing engagements, identifying vulnerabilities through systematic and innovative testing, and translating technical findings into meaningful business insights. The role offers strong progression opportunities, access to industry-recognised … services are designed, implemented, and supported by in-house specialists using a privately owned, state-of-the-art national infrastructure. What You’ll Be Doing: Conduct end-to-end penetration testing across infrastructure, web applications, and internal networks Lead or support security testing engagements and deliver concise, high-quality reports Translate technical findings into clear business impact … and industry best practices Contribute to internal development of tools, research, and process improvement initiatives What We’re Looking For: 1–2 years of hands-on experience in manual penetration testing (infrastructure and/or web applications) Strong understanding of TCP/IP, networking concepts, and web application architecture Familiarity with tools such as Burp Suite, Nmap, Metasploit More ❯

Are you an ambitious individual with a passion for uncovering vulnerabilities and strengthening digital defences? As a Penetration Tester you will be playing a key role in protecting our clients critical systems. Working in a fast-paced environment you will be working on multiple client engagements. This role has come about due to the amount of requirements they have … clients that you could be engaged with both Public and Private Sector, some are one off engagements sometimes there will be multiyear engagements. Key Skills Hands-on experience in penetration testing or IT Health Check delivery Eligibility to obtain and maintain UK security clearances. Familiarity with common tools such as Burp Suite, Nmap, Nessus, Metasploit, etc. Understanding of … network protocols (TCP/IP, OSI model) and common web application Current penetration testing qualification such as CREST Practitioner Security Analyst (CPSA), Crest Registered Tester (CRT), or Cyber Scheme Team Member (CSTM). Exceptional documentation of your results and deliver the results to the client Ability to have technical chats with non-technical individuals to enable them to More ❯

Are you an ambitious individual with a passion for uncovering vulnerabilities and strengthening digital defences? As a Penetration Tester you will be playing a key role in protecting our clients’ critical systems. Working in a fast-paced environment you will be working on multiple client engagements. This role has come about due to the amount of requirements they have … clients that you could be engaged with both Public and Private Sector, some are one off engagements sometimes there will be multiyear engagements. Key Skills Hands-on experience in penetration testing or IT Health Check delivery Eligibility to obtain and maintain UK security clearances. Familiarity with common tools such as Burp Suite, Nmap, Nessus, Metasploit, etc. Understanding of … network protocols (TCP/IP, OSI model) and common web application Current penetration testing qualification such as CREST Practitioner Security Analyst (CPSA), Crest Registered Tester (CRT), or Cyber Scheme Team Member (CSTM). Exceptional documentation of your results and deliver the results to the client Ability to have technical chats with non-technical individuals to enable them to More ❯

strategy aligned with business and regulatory requirements. Liaise with the Eviden COO and Eviden Centre of Excellence to ensure alignment with group-wide security standards and initiatives. Vulnerability Management, Penetration Testing & PSIRT Lead vulnerability assessments and coordinate penetration testing activities with external vendors and internal teams. Track and manage remediation efforts across infrastructure, applications, and cloud … updates to leadership on risk posture and mitigation plans. Requirements Proven experience in a senior security role, ideally within a technology or SaaS environment. Strong understanding of vulnerability management, penetration testing, SecOps, and cloud security. Experience establishing or contributing to PSIRT processes. Experience working with cross-functional teams including engineering, operations, and client services. Excellent communication and stakeholder More ❯

strategy aligned with business and regulatory requirements. Liaise with the Eviden COO and Eviden Centre of Excellence to ensure alignment with group-wide security standards and initiatives. Vulnerability Management, Penetration Testing & PSIRT Lead vulnerability assessments and coordinate penetration testing activities with external vendors and internal teams. Track and manage remediation efforts across infrastructure, applications, and cloud … updates to leadership on risk posture and mitigation plans. Requirements Proven experience in a senior security role, ideally within a technology or SaaS environment. Strong understanding of vulnerability management, penetration testing, SecOps, and cloud security. Experience establishing or contributing to PSIRT processes. Experience working with cross-functional teams including engineering, operations, and client services. Excellent communication and stakeholder More ❯