14 of 14 CHECK Team Leader Jobs in the UK

Summary: CCL Solutions Group is seeking an exceptional Senior Penetration Tester with CHECK Team Leader Infrastructure (CTL-INF) qualifications to join our elite team of security professionals. Location: Home based Main Job Summary This is more than just a job, we're looking for individuals with a hacker's mindset, deep technical expertise, and a relentless … drive to secure the UK's most critical assets. You will be leading engagements across secure environments, delivering high-impact assessments, mentoring team members, and shaping the offensive security direction of the business. In return, we offer a highly supportive environment with structured mentoring, paid training days, and access to advanced tooling. Main Duties & Responsibilities (other duties may be … assigned): CCL Solutions Group are more than just a leading provider of cybersecurity services, we are a team committed to making a real difference in protecting communities, businesses, and the critical infrastructure of the UK. As a Senior Penetration Tester within CCL Solutions Group, your key responsibilities will be: Lead and deliver end-to-end penetration testing engagements across More ❯

Senior Penetration Tester Position Description CGI Cyber Security Team in the UK is one of the largest Cyber consultancies in the UK with around 300 members. The UK Cyber team works across a variety of domains including: Government, Defence, Critical Infrastructure, Healthcare, Utilities, Banking and Financial Services and Many more. At CGI you will get the opportunity to … over 30 years. Experience of the assessment of bespoke applications, cloud technologies and mobile applications (on diverse mobile platforms) would be of an advantage. You would join our established team of penetration testers with the possibility of progressing to team leader or principal tester positions. You would be able to work flexibly, undertaking work at home and … Required qualifications to be successful in this role We would be interested to talk further if you hold any of the following qualifications: - CHECK Team Leader (CTL) - CHECK Team Member (CTM) - CREST Certified Simulated Attack Specialist (CCSAS) - CREST Certified Tester (CCT). Sometimes known as CREST Certified Infrastructure Tester (CCT Inf) or CREST Certified Web More ❯

technical quality assurance to join a high-impact project within the UK cyber security space. This role is ideal for someone who's not only delivered high-end red team engagements but has also overseen the work of others and provided expert-level guidance. You may have worked as a CHECK Team Leader, led adversary simulation … day a week on-site in either Cheltenham or London. Main Responsibilities: Reviewing and sampling technical reports to ensure they meet internal and external quality standards. Coaching and mentoring team leads, particularly those working independently without peer support. Advising the wider project team on best practices in red teaming and adversary simulation. Skills Required: Solid hands-on experience More ❯

technical quality assurance to join a high-impact project within the UK cyber security space. This role is ideal for someone who's not only delivered high-end red team engagements but has also overseen the work of others and provided expert-level guidance. You may have worked as a CHECK Team Leader, led adversary simulation … day a week on-site in either Cheltenham or London. Main Responsibilities: Reviewing and sampling technical reports to ensure they meet internal and external quality standards. Coaching and mentoring team leads, particularly those working independently without peer support. Advising the wider project team on best practices in red teaming and adversary simulation. Skills Required: Solid hands-on experience More ❯

technical quality assurance to join a high-impact project within the UK cyber security space. This role is ideal for someone who's not only delivered high-end red team engagements but has also overseen the work of others and provided expert-level guidance. You may have worked as a CHECK Team Leader, led adversary simulation … day a week on-site in either Cheltenham or London. Main Responsibilities: Reviewing and sampling technical reports to ensure they meet internal and external quality standards. Coaching and mentoring team leads, particularly those working independently without peer support. Advising the wider project team on best practices in red teaming and adversary simulation. Skills Required: Solid hands-on experience More ❯

A UK-based cyber security consultancy is seeking a CHECK Team Member or Team Leader certified Penetration Tester to join their growing offensive security team. This is an opportunity to work on high-assurance engagements across public and private sector clients, delivering technical assessments to support risk reduction, compliance, and threat readiness. Key Responsibilities Deliver infrastructure … and application penetration tests in line with CHECK/NCSC requirements Produce high-quality technical and non-technical reports with clear risk articulation Lead or contribute to Red Team, scenario-based and assurance testing engagements Liaise with clients pre- and post-engagement to scope, explain findings, and advise on remediation Maintain technical expertise in emerging tools, attack vectors … testing methodologies Support internal knowledge sharing and mentoring of junior team members Essential Requirements Current CHECK Team Member (CTM) or CHECK Team Leader (CTL) status Demonstrable experience delivering penetration testing across networks, applications, and cloud environments Strong working knowledge of tools such as Burp Suite, Cobalt Strike, Kali Linux, etc. Familiarity with reporting to More ❯

an Instil Company), we specialise in providing human-focused security and penetration testing services for web applications, cloud infrastructure and mobile applications. The Role We are looking for a CTL (Infrastructure) to join our dynamic team based in Belfast. As a Pen Tester, you will be part of the delivery team, conducting penetration tests and vulnerability assessments across … with the latest security threats, vulnerabilities, and trends. Research offensive security techniques to assess and validate infrastructure and technologies, including cloud-based systems continuously incorporating new techniques into the team's methodology. Automate repetitive tasks by developing scripts to streamline testing processes. Mentor junior penetration testers and contribute to their professional development. Play a key role in enhancing existing More ❯

continued its dynamic growth as a leading information security company. Specializing in penetration testing and information assurance services, we offer an incredible opportunity to be part of an experienced team, build your skills, and grow professionally. Dionach by Nomios holds impressive certifications, including CREST, CHECK, PCI QSA, and ISO 27001. With our focus on enhancing customers' security and … fostering team development,be joining a company that prioritizes both your growth and the safety of our clients. We're in an exciting phase of expansion and are looking for self-motivated individuals ready to thrive in a fun, flexible environment. At Dionach by Nomios, your contributions will have a genuine impact on the business, and you'll find … our employees. If you require accommodations during the application process, let us know, and we'll work to meet your needs. What You'll Do Lead and mentor a team of Penetration testers, fostering a collaborative and high-performance work environment. Lead and oversee complex infrastructure penetration tests ensuring that they are conducted thoroughly and in accordance with project More ❯

Penetration Tester Position Description CGI Cyber Security Team in the UK is one of the largest Cyber consultancies in the UK with around 300 members. The UK Cyber team works across a variety of domains including: Government, Defence, Critical Infrastructure, Healthcare, Utilities, Banking and Financial Services and Many more. At CGI you will get the opportunity to work … over 30 years. Experience of the assessment of bespoke applications, cloud technologies and mobile applications (on diverse mobile platforms) would be of an advantage. You would join our established team of penetration testers with the possibility of progressing to team leader or principal tester positions. You would be … able to work flexibly, undertaking work at home and at client sites across the UK. Required qualifications to be successful in this role - CHECK Team Leader (CTL) - CHECK Team Member (CTM) - CREST Certified Simulated Attack Specialist (CCSAS) - CREST Certified Tester (CCT). Sometimes known as CREST Certified Infrastructure Tester (CCT Inf) or CREST Certified Web More ❯

its inception, the company has grown to employ elite technical experts who have contributed to some of the world's largest technology and digital security projects. The NCSC-approved CHECK company specializes in penetration testing and security assessment services under the government-accredited CHECK scheme. They are currently seeking for a skilled Penetration Tester to join the growing … to identify issues within customer infrastructure and web applications. Perform various types of security testing, including network penetration, web application, mobile security assessments, and social engineering. Participate in red team engagements, employing creative strategies to outsmart defenders. Explore various approaches to gain unauthorized access to customer networks during red team exercises. Perform security assessments in accordance with the … in penetration testing and/or security surveillance. Exhibits eagerness to absorb new knowledge and technologies. Programming Exposure A relevant Cyber Security certification is advantageous, e.g. (OSCP, CRT, CTM, CTL) Showcases stellar communication skills. Benefits: Paid Certifications Health Insurance Pension Paid Certifications Salary More ❯

legacy systems and navigate environments with tech debt Desirable skills & qualifications: • Python scripting or coding skills (advantageous) • Exposure to OT networks and internal infrastructure tooling • Relevant certifications - CREST (CTM, CTL, CSTM), Cyber Scheme Practitioner, OSCP Work Environment & Expectations: • Join a tight-knit, high-performing team • Hybrid model: ~2 days per week in client or office locations, majority remote • Primary More ❯

London (2 days per week on-site) Note: To be eligible for this role, you must be eligible for UK Security Clearance (SC). A high-performing digital security team is looking for an experienced Infrastructure Penetration Tester to join them in delivering critical assessments across complex and sensitive client environments. This is a hands-on internal testing role … environments Produce clear, concise reports tailored to both technical and non-technical audiences Build trusted relationships with clients in a consultancy-facing capacity Work within a small, high-trust team on sensitive engagements Contribute to the evolution of internal tooling and testing methodologies Operate effectively in environments with limited documentation or predefined processes Essential Experience and Skills At least … with technical debt Desirable Skills Python scripting or automation experience Understanding of Operational Technology (OT) networks Familiarity with internal infrastructure exploitation tools Certifications (preferred but not essential): CREST CTM, CTL, CSTM or Cyber Scheme Practitioner OSCP (current or lapsed) If you’re an experienced infrastructure penetration tester looking for meaningful work, we want to hear from you. More ❯

London (2 days per week on-site) Note: To be eligible for this role, you must be eligible for UK Security Clearance (SC). A high-performing digital security team is looking for an experienced Infrastructure Penetration Tester to join them in delivering critical assessments across complex and sensitive client environments. This is a hands-on internal testing role … environments Produce clear, concise reports tailored to both technical and non-technical audiences Build trusted relationships with clients in a consultancy-facing capacity Work within a small, high-trust team on sensitive engagements Contribute to the evolution of internal tooling and testing methodologies Operate effectively in environments with limited documentation or predefined processes Essential Experience and Skills At least … with technical debt Desirable Skills Python scripting or automation experience Understanding of Operational Technology (OT) networks Familiarity with internal infrastructure exploitation tools Certifications (preferred but not essential): CREST CTM, CTL, CSTM or Cyber Scheme Practitioner OSCP (current or lapsed) If you’re an experienced infrastructure penetration tester looking for meaningful work, we want to hear from you. More ❯

with clients to define project scopes, objectives, and expectations, including conducting pre-engagement meetings to understand their environments and threat landscapes. Offer technical leadership by guiding and mentoring junior team members while reviewing and validating their work to ensure quality and accuracy. Develop detailed reports on penetration test results, vulnerabilities, attack paths, and recommended remediations, and present findings to … findings to enhance their security and build trust. Skills/Must have: 3 years experience in penetration testing, ethical hacking, and security assessments. Industry-recognised certifications (e.g., CSTM, CRT, CTL, OSCP). Proficient in advanced tools and techniques for penetration testing. Strong leadership skills with a passion for mentoring junior team members. Excellent communication and presentation skills. In-depth More ❯