25 of 25 CHECK Team Member Jobs in the UK

Job Title: Penetration Tester (CHECK Team Member) Location: UK (Hybrid/Remote) Experience: 1–3 years Eligibility: UK National (must be eligible for security clearance) About the Role: We’re looking for a Penetration Tester (CHECK Team Member) to join our growing cybersecurity team. You’ll conduct network, web, and application security testing for … a range of clients, helping identify vulnerabilities and strengthen defences. Key Responsibilities Deliver high-quality penetration tests and vulnerability assessments. Produce clear, actionable reports and remediation guidance. Support CHECK-accredited engagements and collaborate with senior testers. Stay current with new exploits, tools, and testing techniques. Requirements UK National (security clearance eligibility required). 1–3 years’ experience in penetration … testing or offensive security. CHECK Team Member status (or eligible within 6 months). Strong technical understanding of attack methods, tools, and frameworks. Excellent communication and reporting skills. Desirable CREST CRT, OSCP, or similar certifications. Experience with government or regulated environments. 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 … 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 Ability to manage multiple projects with structured More ❯

CHECK Team Leader (CTL) or CHECK Team Member (CTM) Infrastructure PenTest, Penetration Testers - Cyber Security Testing requ ired by our Public sector, government client. FULLY REMOTE with occasional client visits to Manchester, North West, or Newcastle upon-Tyne, North East. Outside of IR35-c.650 to 700 a day Working in an SC Security Cleared environment … You will hold current SC Clearance or DV (Developed Vetting) or be eligible to undertake Security clearance >Working within the Cyber Security Team, you will be responsible for Pen Testing as well as mentoring, knowledge transfer to team members. Skills/experience required: CSTL or CSTM-essential (NCSC) Previous experience of penetration testing public sector or critical national More ❯

Sponsorship 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 testing Either: Already hold More ❯

Sponsorship 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 testing Either: Already hold More ❯

Sponsorship 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 testing Either: Already hold 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 … delivery Skills & Experience Required: Proven background in infrastructure penetration testing within complex network environments CREST certification or CHECK Team Member/CHECK Team Lead (CTM/CTL) status advantageous Strong understanding of networking, configuration management, and common attack vectors Experience performing API and configuration reviews Excellent report writing and communication skills for both technical and 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 … delivery Skills & Experience Required: Proven background in infrastructure penetration testing within complex network environments CREST certification or CHECK Team Member/CHECK Team Lead (CTM/CTL) status advantageous Strong understanding of networking, configuration management, and common attack vectors Experience performing API and configuration reviews Excellent report writing and communication skills for both technical and 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 … delivery Skills & Experience Required: Proven background in infrastructure penetration testing within complex network environments CREST certification or CHECK Team Member/CHECK Team Lead (CTM/CTL) status advantageous Strong understanding of networking, configuration management, and common attack vectors Experience performing API and configuration reviews Excellent report writing and communication skills for both technical and More ❯

Nessus, Metasploit, BloodHound, Burp Suite, Kali/Linux toolsets Solid track record of delivering infrastructure pentests end-to-end Excellent communication skills, including producing business-focused reporting Preferred Qualifications CHECK Team Member (CSTM) or CHECK Team Leader (CTL) CREST CRT/CCT , OSCP, OSEP, or equivalent recognised industry certifications Experience in cloud infrastructure testing (Azure … We Offer Salary up to £80,000 depending on experience + performance bonus Strong personal development support - certifications funded and continuous training Defined career progression into CTL or Red Team positions Hybrid working with London as the preferred base 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 … 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 Ideally you will … Hold active CHECK Team Member Status Have experience with creating bespoke tools & scripts Possess strong Infrastructure/Networking Knowledge Have a desire to continually learn about the security of new technologies Hold a genuine enthusiasm for solving problems & thinking outside the box Despite being a CHECK penetration testing provider, the business is increasingly focused on commercial More ❯

trained, you’ll begin contributing to billable client work, supported by your mentor and line manager. You’ll start with scoped tasks and gradually take on full engagements Regular check-ins and performance reviews throughout, will ensure you’re progressing technically and professionally, with clear milestones and support. Expected outcomes in your first 12 months: Deliver a graduation project … you will sit an industry wide qualification (such as CRT or CSTM) before commencing billable client facing work. After gaining CRT or CSTM, you will apply to NCSC for CHECK Team Member accreditation. Transition into client-facing delivery work with confidence and credibility Build a strong foundation in penetration testing and consultancy, ready to specialise or broaden …/pre-settled status under the EU Settlement Scheme). Have been continuously resident in the UK for the past five years , to meet the baseline criteria for Security Check (SC) clearance. While not all projects require clearance, the nature of the work means we can only consider candidates who meet these criteria. Unfortunately, we are unable to offer More ❯

trained, you’ll begin contributing to billable client work, supported by your mentor and line manager. You’ll start with scoped tasks and gradually take on full engagements Regular check-ins and performance reviews throughout, will ensure you’re progressing technically and professionally, with clear milestones and support. Expected outcomes in your first 12 months: Deliver a graduation project … you will sit an industry wide qualification (such as CRT or CSTM) before commencing billable client facing work. After gaining CRT or CSTM, you will apply to NCSC for CHECK Team Member accreditation. Transition into client-facing delivery work with confidence and credibility Build a strong foundation in penetration testing and consultancy, ready to specialise or broaden …/pre-settled status under the EU Settlement Scheme). Have been continuously resident in the UK for the past five years , to meet the baseline criteria for Security Check (SC) clearance. While not all projects require clearance, the nature of the work means we can only consider candidates who meet these criteria. Unfortunately, we are unable to offer More ❯

trained, you’ll begin contributing to billable client work, supported by your mentor and line manager. You’ll start with scoped tasks and gradually take on full engagements Regular check-ins and performance reviews throughout, will ensure you’re progressing technically and professionally, with clear milestones and support. Expected outcomes in your first 12 months: Deliver a graduation project … you will sit an industry wide qualification (such as CRT or CSTM) before commencing billable client facing work. After gaining CRT or CSTM, you will apply to NCSC for CHECK Team Member accreditation. Transition into client-facing delivery work with confidence and credibility Build a strong foundation in penetration testing and consultancy, ready to specialise or broaden …/pre-settled status under the EU Settlement Scheme). Have been continuously resident in the UK for the past five years , to meet the baseline criteria for Security Check (SC) clearance. While not all projects require clearance, the nature of the work means we can only consider candidates who meet these criteria. Unfortunately, we are unable to offer More ❯

trained, you’ll begin contributing to billable client work, supported by your mentor and line manager. You’ll start with scoped tasks and gradually take on full engagements Regular check-ins and performance reviews throughout, will ensure you’re progressing technically and professionally, with clear milestones and support. Expected outcomes in your first 12 months: Deliver a graduation project … you will sit an industry wide qualification (such as CRT or CSTM) before commencing billable client facing work. After gaining CRT or CSTM, you will apply to NCSC for CHECK Team Member accreditation. Transition into client-facing delivery work with confidence and credibility Build a strong foundation in penetration testing and consultancy, ready to specialise or broaden …/pre-settled status under the EU Settlement Scheme). Have been continuously resident in the UK for the past five years , to meet the baseline criteria for Security Check (SC) clearance. While not all projects require clearance, the nature of the work means we can only consider candidates who meet these criteria. Unfortunately, we are unable to offer More ❯

trained, you’ll begin contributing to billable client work, supported by your mentor and line manager. You’ll start with scoped tasks and gradually take on full engagements Regular check-ins and performance reviews throughout, will ensure you’re progressing technically and professionally, with clear milestones and support. Expected outcomes in your first 12 months: Deliver a graduation project … you will sit an industry wide qualification (such as CRT or CSTM) before commencing billable client facing work. After gaining CRT or CSTM, you will apply to NCSC for CHECK Team Member accreditation. Transition into client-facing delivery work with confidence and credibility Build a strong foundation in penetration testing and consultancy, ready to specialise or broaden …/pre-settled status under the EU Settlement Scheme). Have been continuously resident in the UK for the past five years , to meet the baseline criteria for Security Check (SC) clearance. While not all projects require clearance, the nature of the work means we can only consider candidates who meet these criteria. Unfortunately, we are unable to offer More ❯

and private sector projects, helping clients identify vulnerabilities, strengthen defences, and build resilience against real-world attacks. This role offers autonomy, variety, and technical depth — all within a collaborative team that genuinely values knowledge sharing, personal growth, and work-life balance. What You’ll Do Conduct penetration tests across web apps, APIs, networks, cloud, and mobile platforms. Participate in … Red Team and social engineering engagements. Deliver clear, actionable reports and guide clients through remediation. Contribute to scoping calls, proposals, and client presentations. Mentor junior testers and help shape the consultancy’s internal security capability. What You’ll Bring 2–5 years’ experience in ethical hacking or penetration testing. Strong understanding of OWASP, web, and infrastructure testing. Experience with … security (AWS, Azure, or GCP). Confident communicator with client-facing experience. Bonus points for: Public sector testing experience. Code review skills (Python, Java, JavaScript). CHECK accreditation (CTM/CTL). Active or eligible SC clearance (five years’ UK residency). More ❯

the Role We’re looking for a skilled Penetration Tester to join a growing, highly regarded UK cyber security practice. You’ll be part of an established, CREST-accredited team , working with both public and private sector clients to assess and improve their security posture across a range of technologies. This is an opportunity to work in a consultancy … environment that values technical excellence, autonomy, and professional development , while maintaining a close-knit, supportive team culture. What You’ll Be Doing Carry out penetration testing across web apps, APIs, cloud platforms, networks, and mobile applications. Support simulated attack exercises (Red Team) and social engineering engagements. Produce clear, high-quality reports outlining findings and recommendations. Contribute to scoping … of OWASP and modern testing methodologies. Confident communicator — able to work directly with clients. Bonus Points For: Code review capability in Python, Java, or JavaScript . CHECK accreditation (CTM or CTL). Active or eligible for SC clearance (five years of UK residency required). Why Join Salary: £40,000 – £60,000 (DOE) + annual bonus up to More ❯

the Role We’re looking for a skilled Penetration Tester to join a growing, highly regarded UK cyber security practice. You’ll be part of an established, CREST-accredited team , working with both public and private sector clients to assess and improve their security posture across a range of technologies. This is an opportunity to work in a consultancy … environment that values technical excellence, autonomy, and professional development , while maintaining a close-knit, supportive team culture. What You’ll Be Doing Carry out penetration testing across web apps, APIs, cloud platforms, networks, and mobile applications. Support simulated attack exercises (Red Team) and social engineering engagements. Produce clear, high-quality reports outlining findings and recommendations. Contribute to scoping … of OWASP and modern testing methodologies. Confident communicator — able to work directly with clients. Bonus Points For: Code review capability in Python, Java, or JavaScript . CHECK accreditation (CTM or CTL). Active or eligible for SC clearance (five years of UK residency required). Why Join Salary: £40,000 – £60,000 (DOE) + annual bonus up to More ❯

the Role We’re looking for a skilled Penetration Tester to join a growing, highly regarded UK cyber security practice. You’ll be part of an established, CREST-accredited team , working with both public and private sector clients to assess and improve their security posture across a range of technologies. This is an opportunity to work in a consultancy … environment that values technical excellence, autonomy, and professional development , while maintaining a close-knit, supportive team culture. What You’ll Be Doing Carry out penetration testing across web apps, APIs, cloud platforms, networks, and mobile applications. Support simulated attack exercises (Red Team) and social engineering engagements. Produce clear, high-quality reports outlining findings and recommendations. Contribute to scoping … of OWASP and modern testing methodologies. Confident communicator — able to work directly with clients. Bonus Points For: Code review capability in Python, Java, or JavaScript . CHECK accreditation (CTM or CTL). Active or eligible for SC clearance (five years of UK residency required). Why Join Salary: £40,000 – £60,000 (DOE) + annual bonus up to More ❯

the Role We re looking for a skilled Penetration Tester to join a growing, highly regarded UK cyber security practice. You ll be part of an established, CREST-accredited team , working with both public and private sector clients to assess and improve their security posture across a range of technologies. This is an opportunity to work in a consultancy … environment that values technical excellence, autonomy, and professional development , while maintaining a close-knit, supportive team culture. What You ll Be Doing Carry out penetration testing across web apps, APIs, cloud platforms, networks, and mobile applications. Support simulated attack exercises (Red Team) and social engineering engagements. Produce clear, high-quality reports outlining findings and recommendations. Contribute to scoping … of OWASP and modern testing methodologies. Confident communicator able to work directly with clients. Bonus Points For: Code review capability in Python, Java, or JavaScript . CHECK accreditation (CTM or CTL). Active or eligible for SC clearance (five years of UK residency required). Why Join Salary: £40,000 £60,000 (DOE) + annual bonus up More ❯

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 understand the outcomes. This role is More ❯

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 understand the outcomes. This role is More ❯

Penetration Tester | CHECK CTL or CTM | Outside IR35 | Short Term Engagement My client is an exciting and growing consultancy based in London that requires a Pen Tester for a short-term contract. This role has been deemed as outside IR35 and will be remote-first, with the occasional trip into London required. Key Skills: Strong Pen Testing background CHECK CTL OR CTM Certified (active) Experience working in Enterprise Environments This client is looking to review profiles this week and interview ASAP. If you are interested, please apply using the link below or email jamesf@infosec.co.uk for more information. More ❯

on a range of challenging projects that truly make an impact, with the flexibility of working remotely and only occasional travel to the Gloucestershire office. What you’ll need: CTM or CSTM certification (preferred, but willing to work towards). Strong background in penetration testing across networks, applications, and infrastructure. Solid understanding of common vulnerabilities, exploits, and remediation techniques. British More ❯