1 to 25 of 107 Remote Penetration Testing Jobs in the UK

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 ❯

Penetration Tester Permanent – up to £85k per annum London based – hybrid working – 2-3 days office based Must have CHECK CTL and certified Role Overview: We are seeking a highly skilled and experienced Offensive Security Consultant with a strong focus understanding on threat intelligence and attack methods. The ideal candidate will be responsible for managing and conducting advanced penetration testing engagements, leveraging threat intelligence to simulate real-world attacks across a variety of environments, including OT, IT, web applications, cloud infrastructure, and APIs. This role requires a deep understanding of adversarial approaches, excellent communication skills, and the ability to provide strategic and actionable recommendations to significantly enhance our clients' security posture. Responsibilities: Lead and manage the full … lifecycle of complex penetration testing engagements, applying a strong threat intelligence-led approach. Execute advanced penetration tests across a broad range of environments (applications, infrastructure, web, APIs, O365, Azure, AWS, OT), directly applying your knowledge of current threat landscapes and attacker TTPs. Develop and maintain sophisticated test plans, execution plans, and targeted use cases directly informed by More ❯

Penetration Tester Permanent – up to £85k per annum London based – hybrid working – 2-3 days office based Must have CHECK CTL and certified Role Overview: We are seeking a highly skilled and experienced Offensive Security Consultant with a strong focus understanding on threat intelligence and attack methods. The ideal candidate will be responsible for managing and conducting advanced penetration testing engagements, leveraging threat intelligence to simulate real-world attacks across a variety of environments, including OT, IT, web applications, cloud infrastructure, and APIs. This role requires a deep understanding of adversarial approaches, excellent communication skills, and the ability to provide strategic and actionable recommendations to significantly enhance our clients' security posture. Responsibilities: Lead and manage the full … lifecycle of complex penetration testing engagements, applying a strong threat intelligence-led approach. Execute advanced penetration tests across a broad range of environments (applications, infrastructure, web, APIs, O365, Azure, AWS, OT), directly applying your knowledge of current threat landscapes and attacker TTPs. Develop and maintain sophisticated test plans, execution plans, and targeted use cases directly informed by More ❯

is not available. Who we are: Cyber Guarded Ltd is a long-established and independent cyber security company based in Belfast. As the premier NCSC-approved supplier for CHECK Penetration Testing in Northern Ireland, including Cyber Incident Exercising being conducted at the highest levels, along with Cyber Advisor - Cyber Essentials, we support clients across both public and private … sectors. As we continue to grow significantly, securing significant contracts across Northern Ireland, we’re strengthening our technical team to meet demand. We are seeking skilled Penetration Testers who are either already Cyber Scheme Team Member (CSTM) or CREST Registered Penetration Tester (CRT) or have the technical ability and motivation to gain the above qualifications in the near … future to achieve NCSC CHECK Penetration Testing status. What You’ll Do: Perform infrastructure, web, cloud, and OT penetration testing Produce clear, actionable reports and remediation advice Engage with clients through the full testing lifecycle Contribute to tooling, methodology, and internal R&D What We’re Looking For: Hands-on experience in professional penetration More ❯

Vulnerability Management & Penetration Testing Specialist Hands on technical specialist role, the chance to spearhead a technical red team operation. Working Hybrid within one of the most innovative and fastest growing technological companies in the country in the West Midlands. £80,000 p/a + 15% bonus and car scheme. Perfect for candidates that like a challenge and … understanding is also needed. You will bring your Cyber Security and InfoSec knowledge to a point and spearhead a new 'red team' function by being the go to for penetration testing and vulnerability management. What do you need? Hands on vulnerability testing and evaluations, as well as the 'hands off' ability to discuss this with peers. PCI … DSS Pen testing specialist skills. Application development/engineering background Working alongside multi disciplined teams to meet security and lifecycle deadlines. What would be nice to have? Experience of having created Technical Documentation Auditing Evidence of keeping up with Governance and Risk trends Superb well rounded technologist who genuinely is interested in most recent technologies across all fields. To More ❯

CISSP, CEH, or similar) are a plus Bachelor's degree in Cybersecurity, Computer Science, or related field is preferred The successful candidate will have demonstrable knowledge and experience of penetration testing, preferably supported by industry leading qualifications. In addition they will have: SPECIALITIES • Web Application Security (Implementation, detection, mitigation and education) • Penetration Testing and Vulnerability Assessment … Network, SCADA and Web Application) • Mobile phone/Application Penetration Testing (Android/iPhone/iPad) • Computer and Network Forensics (including e-Discovery) • Delivery of Enterprise Wide Security Programs • Operational Security (Incident Response) • Infrastructure Security and Risk assessments • Network Security (border control devices) • Social Engineering • Good client facing skills. • Drive and ambition to provide support the UK business … development executives. In addition the successful candidate may have: • The successful candidate may have published vulnerabilities and white papers. • The successful candidate may have experience in testing Web Services. • The successful candidate may have experience testing mobile applications. CERTIFTICATION & MEMBERSHIPS Core qualifications:- • Current CREST CCT-INF or CREST CCT-APP certifications • Current Check Team Leader (CTL) at NCSC 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 ❯

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 ❯

Junior Penetration Tester (Career Switch Opportunity) Location: Hybrid – Bristol/Cheltenham area (travel a couple of times per month, expenses covered) Salary: £30,000 – £40,000 (depending on experience) Clearance: Must be eligible for SC and DV clearance (British citizenship required) About the Role Our client, a specialist cybersecurity consultancy, is seeking technically skilled professionals who are ready to … transition into a hands-on Penetration Testing role. This position is ideal for candidates currently working in roles such as Network Engineer , Systems Administrator , SOC Analyst , or similar, who are looking to move into offensive security and ethical hacking. As a Junior Penetration Tester, you’ll work alongside experienced security consultants on a variety of client engagements … across sectors including defence, government, and critical infrastructure. You’ll gain exposure to a broad range of testing activities — from infrastructure and web application assessments to red teaming and vulnerability research. Key Responsibilities Assist in the delivery of penetration tests and vulnerability assessments. Support senior testers in scoping, executing, and reporting on client engagements. Develop and document exploits 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 ❯

CHECK Certified Penetration Testers (All Levels) - UK remote - £50k-£110k+ Opus has partnered with a leading consultancy with an established offensive security team, renowned for delivering exceptional CHECK penetration testing engagements across high assurance environments. This organisation is trusted by government, defense, and enterprise clients to secure their most critical systems. The Role We are seeking CHECK … certified penetration testers at all levels (CTM, CTL, and equivalent) to join this elite team. You’ll be working on complex, high profile projects where your expertise will directly contribute to protecting national infrastructure and sensitive environments. Main responsibilities: Deliver CHECK penetration testing engagements across government, defense, and regulated industries. Perform technical assessments covering infrastructure, applications, cloud … advanced projects. Research emerging threats and contribute to internal knowledge sharing. Mentor junior testers (for senior roles). Requirements CHECK certification (CTM or CTL). Strong technical background in penetration testing, red teaming, or exploit development. Experience in high assurance environments (government, defense, or regulated sectors). Excellent communication skills for technical and non technical audiences. Ability 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 ❯

Simulation (BAS) platforms to build and validate threat scenarios. Strong understanding of adversary tactics, techniques, and procedures (TTPs), MITRE ATT&CK framework, and threat modeling. Hands-on experience with penetration testing tools such as Metasploit Framework, Burp Suite, Kali Linux, and Pentera. Experience producing threat reports and briefings. Certifications Required or Preferred: Years of relevant experience: 8+ years … of experience in threat intelligence, cybersecurity operations, or penetration testing. Proven ability to collaborate across technical teams, including Red/Blue teams and SO Industry Experience Required or Preferred: Key Soft Skills (e.g Communication, leadership, stakeholder management): Analytical and detail-oriented with a strong sense of curiosity. Collaborative and team-focused, with a proactive approach to cross-functional engagement. … and analyze the global threat landscape to identify emerging risks, adversary tactics, and trends relevant to the organizations 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 More ❯

Penetration Tester – Web & Mobile Location: Remote (UK based only) Salary: Up to £60,000 About the Role Opus has partnered with a leading cyber security consultancy who are looking to grow their team with an experienced Penetration Tester. This is a fantastic opportunity for someone with consultancy experience and a strong background in web application and mobile application … testing to take the next step in their career. You’ll be joining an established but growing consultancy that works with a wide range of clients, delivering high quality penetration testing services and actionable security insights. What You’ll Be Doing Conducting web application and mobile application penetration tests. Deliver clear, professional reports and presenting findings … on remediation and best practices. Work across a variety of clients, within various industries including retail, technology, manufacturing, government organisations, and more. What We’re Looking For 2+ years penetration testing experience (web & mobile focus). Consultancy background – confident in client facing delivery. Strong technical skills with tools such as Burp Suite, mobile testing frameworks, and other 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 ❯

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 a … 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, and … 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 More ❯

CHECK Registered Penetration Tester - UK remote - £50k - £70k Location: Fully Remote (UK-based) Salary: £50,000 – £70,000 + Excellent Benefits About the Role We’re working with a well-established and fast-growing cybersecurity consultancy that is looking to expand its team of expert penetration testers. This is an exciting opportunity for a CHECK Registered Pen Tester … CTM level or above) to join a collaborative, forward-thinking environment where your skills will be valued and developed. Key Responsibilities Conduct penetration testing engagements across a variety of sectors including healthcare, telecoms, and financial services Deliver high-quality technical assessments in line with CHECK standards Produce clear, concise, and actionable reports for both technical and non-technical … stakeholders Collaborate with senior consultants and principals to ensure best practices and knowledge sharing Stay current with emerging threats, tools, and techniques to continuously improve testing methodologies What We’re Looking For CHECK Team Member (CTM) or CHECK Team Leader (CTL) status Strong knowledge of penetration testing tools, techniques, and methodologies Excellent communication and report-writing skills More ❯

and resolve cyber incidents promptly and effectively. Implement and manage security measures including firewalls, encryption, and endpoint protection. Maintain clear documentation of breaches, assessments, and remediation actions. Conduct vulnerability testing, penetration testing, and risk assessments. Collaborate with the IT Security Manager to identify and mitigate network vulnerabilities. Analyse logs from multiple sources to detect and respond to More ❯

and resolve cyber incidents promptly and effectively. Implement and manage security measures including firewalls, encryption, and endpoint protection. Maintain clear documentation of breaches, assessments, and remediation actions. Conduct vulnerability testing, penetration testing, and risk assessments. Collaborate with the IT Security Manager to identify and mitigate network vulnerabilities. Analyse logs from multiple sources to detect and respond to More ❯

apps that sync with the client’s hardware devices Drive DevOps best practices across CI/CD pipelines, monitoring, and deployment Design and maintain a cybersecurity-first architecture, including penetration testing Optimise an Azure-based infrastructure for high availability and cost efficiency Collaborate with cross-functional teams to deliver impactful new features Shape the design of future products … Tech Stack Web: ASP.NET Core, C#, JavaScript, HTML/CSS PC: C#, XAML, USB-MTP Mobile: Cordova (iOS & Android) Cloud: Microsoft Azure, CI/CD pipelines, version control, automated testing Security: Secure coding, authentication, penetration testing Hardware: Industry-leading devices, digitally integrated What They are Looking For KO2’s client is seeking a creative, forward-thinking developer More ❯

apps that sync with the client's hardware devices Drive DevOps best practices across CI/CD pipelines, monitoring, and deployment Design and maintain a cybersecurity-first architecture, including penetration testing Optimise an Azure-based infrastructure for high availability and cost efficiency Collaborate with cross-functional teams to deliver impactful new features Shape the design of future products … Tech Stack Web: ASP.NET Core, C#, JavaScript, HTML/CSS PC: C#, XAML, USB-MTP Mobile: Cordova (iOS & Android) Cloud: Microsoft Azure, CI/CD pipelines, version control, automated testing Security: Secure coding, authentication, penetration testing Hardware: Industry-leading devices, digitally integrated What They are Looking For KO2's client is seeking a creative, forward-thinking developer More ❯

apps that sync with the client's hardware devices Drive DevOps best practices across CI/CD pipelines, monitoring, and deployment Design and maintain a cybersecurity-first architecture, including penetration testing Optimise an Azure-based infrastructure for high availability and cost efficiency Collaborate with cross-functional teams to deliver impactful new features Shape the design of future products … Tech Stack Web: ASP.NET Core, C#, JavaScript, HTML/CSS PC: C#, XAML, USB-MTP Mobile: Cordova (iOS & Android) Cloud: Microsoft Azure, CI/CD pipelines, version control, automated testing Security: Secure coding, authentication, penetration testing Hardware: Industry-leading devices, digitally integrated What They are Looking For KO2's client is seeking a creative, forward-thinking developer More ❯

SP800 series, CSF). Conduct risk assessments and vulnerability management activities. Maintain robust security controls across enterprise assets, software, networks, and applications. Support incident response and recovery processes, including penetration testing and audit log management. Deliver training and awareness programs to enhance the organizations security posture. Collaborate with internal and external stakeholders to maintain compliance and manage third … analytical mindset with strong problem-solving skills. Technical Skills: Comprehensive knowledge of security controls, including: Data Protection, Account Management, and Access Control Management. Continuous Vulnerability Management and Incident Response. Penetration Testing and Security Awareness Training. Secure Configuration and Network Monitoring. More ❯