1 to 25 of 171 Penetration Testing Jobs in the UK excluding London

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

analyse the global threat landscape to identify emerging risks, adversary tactics, and trends relevant to the organization's business and technology environment Collaborate with Red Team, Blue Team, and Penetration Testing teams to integrate threat intelligence into testing scenarios using Breach & Attack Simulation (BAS) platforms and enhance defensive strategies Act as a liaison between threat intelligence and … intelligence and offensive security operations Ad hoc requests from your line manager Cyber Security Analyst Ideal Candidate: At least 5 years of experience in threat intelligence, cybersecurity operations, or penetration testing Ability to collaborate across technical teams, including Red/Blue teams and SOC Familiarity with threat intelligence platforms (TIPs), SIEMs, and threat data enrichment tools Experience using … Breach and Attack Simulation (BAS) platforms Strong understanding of adversary tactics, techniques, and procedures (TTPs), MITRE ATT&CK framework, and threat modelling Hands-on experience with penetration testing tools such as Metasploit Framework, Burp Suite, Kali Linux, and Pentera Experience producing threat reports and briefings Business level fluency in English Japanese, Cantonese, Mandarin language would be advantageous due More ❯

Infrastructure Penetration Tester | CHECK | CREST | CSTL/CTL | Networking | Config Reviews | API Testing | Contract Pen Testing | Infrastructure | External & Internal Networks | SR2 is partnered with a leading security consultancy on a significant multi-phase testing programme, and we’re looking for an experienced Infrastructure Penetration Tester to join the team. This role will focus on delivering … hands-on penetration testing across external and internal networks, reviewing system configurations, and identifying vulnerabilities within critical infrastructure. You’ll work alongside a small team of experienced testers to support a major client undergoing large-scale change, ensuring their environment is secure and compliant. Key Responsibilities: Conduct comprehensive external and internal infrastructure penetration tests , starting with perimeter … systems and moving into internal networks Perform configuration reviews across servers, firewalls, routers, and network devices Execute API security testing to assess authentication, data access, and integration risks Deliver “old-school” CHECK-style network and infrastructure testing in line with industry standards Produce detailed technical reports outlining vulnerabilities, exploitation paths, and remediation guidance Collaborate with the project lead More ❯

Infrastructure Penetration Tester | CHECK | CREST | CSTL/CTL | Networking | Config Reviews | API Testing | Contract Pen Testing | Infrastructure | External & Internal Networks | SR2 is partnered with a leading security consultancy on a significant multi-phase testing programme, and we’re looking for an experienced Infrastructure Penetration Tester to join the team. This role will focus on delivering … hands-on penetration testing across external and internal networks, reviewing system configurations, and identifying vulnerabilities within critical infrastructure. You’ll work alongside a small team of experienced testers to support a major client undergoing large-scale change, ensuring their environment is secure and compliant. Key Responsibilities: Conduct comprehensive external and internal infrastructure penetration tests , starting with perimeter … systems and moving into internal networks Perform configuration reviews across servers, firewalls, routers, and network devices Execute API security testing to assess authentication, data access, and integration risks Deliver “old-school” CHECK-style network and infrastructure testing in line with industry standards Produce detailed technical reports outlining vulnerabilities, exploitation paths, and remediation guidance Collaborate with the project lead More ❯

Cyber Security Consultant (Penetration Tester) Milton Keynes, Buckinghamshire, United Kingdom We are seeking an experienced Cyber Security Consultant (Penetration Tester) . Make an Impact at RSM UK At RSM, our consulting team brings together diverse advisory experts to deliver our six core solutions: business transformation, forensic, deal services, restructuring, finance function support, and risk and governance. Our solutions … seeking an enthusiastic Cyber Security Consultant to join our team. Working alongside our experienced team of specialists, you'll deliver offensive security services including digital footprint reconnaissance, social engineering, penetration testing, vulnerability assessments, and more to high-profile clients across all industries. The purpose of this role is to deliver offensive security services such as digital footprint reconnaissance … social engineering, vulnerability assessments, penetration testing, threat modeling, cyber-attack simulation exercises, and more. You'll benefit from ongoing coaching, career mentoring, and support through our career pathway. You will have opportunities to develop market-leading skills across different capabilities and advance your professional development. You will make an impact by: Supporting technical scoping activities for client assignments. 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, systems … 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 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, systems … 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 More ❯

effective security controls and countermeasures. Conduct threat modelling exercises to identify potential security risks and vulnerabilities early in the development lifecycle. Conduct in-depth security assessments, code reviews, and penetration testing of applications to identify and mitigate security vulnerabilities. Utilise industry-standard tools and methodologies to assess the security posture of applications and provide actionable recommendations for remediation … person, with the ability to educate and influence on Application Security matters Basic experience in Software Development with any programming language Security Test Management Application Security Assessments Security Assurance Penetration Testing Security Evaluation & Functional Testing Application Security Testing If the above is of interest, please apply with an updated copy of your CV and a member More ❯

Penetration Tester UK/Remote - 65,000 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 … 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 ❯

Manual Penetration Tester Fully Remote We're proud to be working with a renowned MSP in support of their search for an experienced Manual Penetration Tester. Key Responsibilities Carry out hands-on penetration testing across applications, infrastructure, and networks, with a particular focus on web apps and security products Deliver highly technical and effective security engagements … through hands on systematic and innovative testing Lead teams on client engagements as well as working alone Deliver detailed and actionable penetration test reports efficiently Explain complex security issues in a clear, business-focused way to different audiences, from technical development teams to senior non-technical management teams. Required experience Proven history in the delivery of manual penetration testing (Application and Infrastructure) A solid understanding of TCP/IP and networking concepts Extensive knowledge in the testing of Web-based applications Knowledge or experience of security build reviews for all common operating systems Comfortable with programming in one or more languages Deep knowledge of databases, including security considerations and database hardening techniques Solid technical understanding More ❯

Manual Penetration Tester Fully Remote We're proud to be working with a renowned MSP in support of their search for an experienced Manual Penetration Tester. Key Responsibilities Carry out hands-on penetration testing across applications, infrastructure, and networks, with a particular focus on web apps and security products Deliver highly technical and effective security engagements … through hands on systematic and innovative testing Lead teams on client engagements as well as working alone Deliver detailed and actionable penetration test reports efficiently Explain complex security issues in a clear, business-focused way to different audiences, from technical development teams to senior non-technical management teams. Required experience Proven history in the delivery of manual penetration testing (Application and Infrastructure) A solid understanding of TCP/IP and networking concepts Extensive knowledge in the testing of Web-based applications Knowledge or experience of security build reviews for all common operating systems Comfortable with programming in one or more languages Deep knowledge of databases, including security considerations and database hardening techniques Solid technical understanding More ❯

Manual Penetration Tester Fully Remote We're proud to be working with a renowned MSP in support of their search for an experienced Manual Penetration Tester. Key Responsibilities Carry out hands-on penetration testing across applications, infrastructure, and networks, with a particular focus on web apps and security products Deliver highly technical and effective security engagements … through hands on systematic and innovative testing Lead teams on client engagements as well as working alone Deliver detailed and actionable penetration test reports efficiently Explain complex security issues in a clear, business-focused way to different audiences, from technical development teams to senior non-technical management teams. Required experience Proven history in the delivery of manual penetration testing (Application and Infrastructure) A solid understanding of TCP/IP and networking concepts Extensive knowledge in the testing of Web-based applications Knowledge or experience of security build reviews for all common operating systems Comfortable with programming in one or more languages Deep knowledge of databases, including security considerations and database hardening techniques Solid technical understanding More ❯

Manual Penetration Tester Fully Remote We're proud to be working with a renowned MSP in support of their search for an experienced Manual Penetration Tester. Key Responsibilities Carry out hands-on penetration testing across applications, infrastructure, and networks, with a particular focus on web apps and security products Deliver highly technical and effective security engagements … through hands on systematic and innovative testing Lead teams on client engagements as well as working alone Deliver detailed and actionable penetration test reports efficiently Explain complex security issues in a clear, business-focused way to different audiences, from technical development teams to senior non-technical management teams. Required experience Proven history in the delivery of manual penetration testing (Application and Infrastructure) A solid understanding of TCP/IP and networking concepts Extensive knowledge in the testing of Web-based applications Knowledge or experience of security build reviews for all common operating systems Comfortable with programming in one or more languages Deep knowledge of databases, including security considerations and database hardening techniques Solid technical understanding More ❯