51 to 75 of 103 Penetration Testing Jobs in London

multi vendor solutions, including Microsoft security, compliance and identity services. Managed SOC Managed XDR Cloud Security (M365, Azure, AWS) Managed SIEM (Sentinel + multi vendor) Security Professional Services Pen Testing Red Teaming ISO27001/Cyber Essential Plus Apps/Infra testing You role will be to drive sales across through a mix of marketing campaigns, events and direct More ❯

Senior Penetration Tester – Must be eligible to obtain security clearance We are looking for a Senior Penetration Tester/Ethical Hacker to work freelance for a company who delivers high-quality security solutions for an array of different clients from varied industries. Due to an unprecedented increase in workload, we are looking for a reliable Penetration Tester … to work on overflow projects, delivering infrastructure penetration testing, including broader vulnerability assessments and security audits as needed. You will also produce clear, professional reports and deliver testing debriefs. This opportunity would suit someone who is already in a permanent position, looking for freelance work in addition to their main role, or someone who is happy with … nature of work and client base, all applicants but be able to obtain SC clearance. Day rate: £400 - £500 per day, London – remote/hybrid Requirements Proven experience in Penetration Testing/Ethical Hacking Strong knowledge of network and cloud infrastructure security. Up-to-date on the latest cybersecurity threats and technologies. Strong knowledge in pen testing More ❯

Job Title: Penetration Tester Role: An exciting opportunity for a mid-level Penetration Tester to join a dynamic and collaborative security consultancy based in London. This role is ideal for a proactive individual with a hacker’s mindset and broad security testing experience across applications, networks, cloud platforms, and more. You'll be a key player in … delivering high-quality penetration tests while also supporting client advisory, team development, and process improvement. What’s in it for you? Autonomy and ownership in conducting diverse penetration testing engagements. Ongoing professional development with access to industry events and training. A positively charged work environment with flexibility for hybrid working post-probation. Responsibilities: Conduct web, mobile, API … infrastructure, cloud, and wireless penetration testing. Create detailed technical reports and deliver test findings directly to clients. Provide remediation advice and post-assessment consultancy. Contribute to internal testing methodologies and Red Team/social engineering activities. Mentor junior team members and support collaborative delivery of projects. Occasionally support the creation of marketing materials such as research papers and More ❯

Penetration Tester required for my client based in Leeds/London - visit office 2 x per month. This is a permanent opportunity. Salary approx. £50-80k. Are you a skilled ethical hacker with a passion for uncovering vulnerabilities? My client are a fast-growing cybersecurity reseller/MSP delivering cutting-edge security solutions across multiple sectors. The Role … As the Penetration Tester, you’ll simulate cyberattacks on client environments—testing networks, apps, cloud platforms, and more—to expose weaknesses and recommend fixes. You’ll work on red/purple team engagements, social engineering tests, and cloud security assessments, delivering high-impact reports that drive real security improvements. What You’ll Do: Perform infrastructure, web app, wireless … and cloud penetration tests Execute red team simulations and assumed breach scenarios Craft clear, actionable reports for both technical and executive audiences Stay ahead of emerging threats, exploits, and attack techniques Collaborate with cyber, managed services, and compliance teams Skills You’ll Need: 2-5+ years in penetration testing (network, web, cloud, etc.) Mastery of tools More ❯

processes. Help proactively assess security risk through product deep dives, threat modeling, and design, architecture and implementation reviews Review and improve existing security processes related to product assessments, pen testing, and bug bounty findings. Develop product security controls and supervising strategies to grow our threat detection capabilities. Seek opportunities for security tooling and automation WHAT YOU'LL BRING: 5+ … of common vulnerabilities and emerging threats. Experience with authentication and authorization standards, including OAuth and SAML, and their weaknesses. Detailed knowledge of system security vulnerabilities and remediation techniques, including penetration testing and the development of exploits. Experience with Cloud Computing providers like AWS, GCP, Azure. Problem solving skills to resolve problems effectively and creatively while maintaining a high … processes. Help proactively assess security risk through product deep dives, threat modeling, and design, architecture and implementation reviews Review and improve existing security processes related to product assessments, pen testing, and bug bounty findings. Develop product security controls and supervising strategies to grow our threat detection capabilities. Seek opportunities for security tooling and automation WHAT YOU'LL BRING: 5+ More ❯

respond to potential threats. Utilise advanced tools and techniques to analyse security data and identify patterns or anomalies that may indicate a security breach. Review regular vulnerability assessments and penetration testing to ensure the robustness of security measures. Ensure rapid response to common incidents: Contribute to incident response plans to address security breaches promptly and effectively. Key Skills More ❯

to Methodically Find Faults and perform Root Cause Analysis • Able to evaluate multiple courses of action, achieving goals by non-standard means if necessary • System Regression • Protocol Analysis • Load Testing • Availability and Resilience Optimisation • Lockdowns and Basic Penetration Testing Technologies • Operating Systems and Virtualisation (Windows and Linux) • Infrastructure as Code and Operational Automation (e.g. Terraform, Ansible) • Message More ❯

as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice. Similar Jobs (2) Senior Manager, Penetration Testing locations 2 Locations time type Full time posted on Posted 30+ Days Ago Senior Analyst, Technology and Cyber Security GRC locations London, United Kingdom time type Full More ❯

and market trends. Preferred Qualifications Bachelor's degree in Computer Science, Engineering, or a related technical discipline. Domain experience with security research/hacking as part of red teaming, penetration testing, and/or bug bounty programs, including methods, tools, and types of testing. Expertise in high-growth approaches to product discovery, planning, and development processes and tools More ❯

analyse, and evaluate security threats, vulnerabilities, risks and solutions across the organisation. Develop, advise and implement risk mitigation strategies to minimise security threats. Conduct regular security assessments, audits, and penetration testing. Undertake security threat assessments on assets across the London portfolio. Support, collaborate, and undertake taskings aligned to the wider strategy and specialist frameworks overseen by the Director of More ❯

analyse, and evaluate security threats, vulnerabilities, risks and solutions across the organisation. Develop, advise and implement risk mitigation strategies to minimise security threats. Conduct regular security assessments, audits, and penetration testing. Undertake security threat assessments on assets across the London portfolio. Support, collaborate, and undertake taskings aligned to the wider strategy and specialist frameworks overseen by the Director of More ❯

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 team. This role … combination of industry-standard and in-house developed tools for security testing. Conduct manual reviews 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 … solving capabilities. Possesses a solid understanding and fascination with fundamental concepts in operating systems and networking. Displays a keen interest in security principles and protocols. Demonstrates proven experience 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 More ❯

the following skills and experience: - Relevant cyber certifications - Experience in either a Cyber Analyst or Cyber Engineer role - Knowledge on SIEM and EDR tools - Experience in network audits and penetration testing - Infrastructure support experience - Knowledge on security frameworks More ❯

We are seeking an enthusiastic Cyber Security Consultantto join our team. Working alongside ourexperienced team of specialists, you'll be delivering offensive securityservices including digital footprint reconnaissance, social engineering,penetration testing and vulnerability assessments and more to high profileclients across all industries. The purpose of this role is to deliver our offensivesecurity services including digital footprint reconnaissance, socialengineering … vulnerability assessments, penetration testing, threat modelling,cyber-attack simulation exercises, and more to high profile clients across allindustries. The purpose of this role is to deliver our Cyber Security services across our broad range of assurance and advisory engagementsto high profile clients across all industries. We are seeking an enthusiastic Cyber Security Consultantto join our team. Working alongside More ❯

respond to potential threats Utilise advanced tools and techniques to analyse security data and identify patterns or anomalies that may indicate a security breach Review regular vulnerability assessments and penetration testing to ensure the robustness of security measures Contribute to incident response plans to address security breaches promptly and effectively About you: You will have the following experiences More ❯

for network and security infrastructure Lead threat detection and response using tools like SIEM, Sophos MTR, and Splunk Manage Firewalls, VPNs, intrusion detection systems, and endpoint protection Conduct annual penetration testing and remediate vulnerabilities Support disaster recovery planning and incident response Provide BAU support and mentor junior IT staff Tech Stack & Tools: Security: Checkpoint, Cisco ISE, Zscaler, Sophos More ❯

to reduce risk and effort Practical experience working collaboratively with Engineering and IT teams to investigate, resolve, and prevent security issues Familiarity with application security principles, with exposure to penetration testing or ethical hacking (CEH or similar certification is a plus) Awareness of industry frameworks like ISO 27001, CIS, or similar, and ideally holding a CISMP certification A More ❯

Windows Server OSes Windows 10 & 11 Desktop MS 365 Apps The ideal candidate will possess a solid understanding of CIS & NCSC security best practices, along with expertise in Pen Testing and Vulnerability remediation. Requirements Strong technical skills in VMware, Veeam, HPE, SCCM, and more. Confidence in on-site client support in the financial industry. Effective communication skills. Ability to More ❯

Senior Penetration Tester | 12 Month Initial Contract | £750 - £850 per day (Inside IR35) | Cheltenham or London | 1 day per week on-site | SC Clearance Eligibility Required MERITUS Talent are working with a boutique Defence consultancy supporting a UK Central Government department in their Cyber Security function. We're looking for an experienced Senior Penetration Tester with a strong … 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 in penetration testing and red teaming, particularly in operational environments. A background in technical QA - reviewing, validating, and improving the output of other testers. Experience as an assessor or contributor More ❯

Senior Penetration Tester | 12 Month Initial Contract | £750 - £850 per day (Inside IR35) | Cheltenham or London | 1 day per week on-site | SC Clearance Eligibility Required MERITUS Talent are working with a boutique Defence consultancy supporting a UK Central Government department in their Cyber Security function. We're looking for an experienced Senior Penetration Tester with a strong … 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 in penetration testing and red teaming, particularly in operational environments. A background in technical QA - reviewing, validating, and improving the output of other testers. Experience as an assessor or contributor More ❯

you will need the following skills and experience: - Experience in either a Cyber Analyst or Cyber Engineer role - Knowledge on SIEM and EDR tools - Experience in network audits and penetration testing - Infrastructure support experience - Knowledge on security frameworks More ❯

recovery plans Establish and improve vulnerability management processes Requirements Experience in a Cyber Analyst or Cyber Engineer role Knowledge of SIEM and EDR tools Experience with network audits and penetration testing Infrastructure support experience Understanding of security frameworks Create a job alert and receive personalized job recommendations directly to your inbox. More ❯

UK-based organisation and multi award winning provider of data protection, cyber security and other IT solutions. They specialise in delivering cutting-edge services ranging from cyber-awareness training, penetration testing, and compliance and risk management. They offer a state-of-the-art data-protection solution that combines leading software, secure storage, and cloud recovery capabilities. Key Skills More ❯

UK-based organisation and multi award winning provider of data protection, cyber security and other IT solutions. They specialise in delivering cutting-edge services ranging from cyber-awareness training, penetration testing, and compliance and risk management. They offer a state-of-the-art data-protection solution that combines leading software, secure storage, and cloud recovery capabilities. Key Skills More ❯

path to enhanced cybersecurity and compliance. You work side by side with your client, providing advisory and support to address challenges with precision and confidence. With our expertise in penetration testing , risk assessments , and independent OT security assessments, you empower your client to achieve exceptional cyber resilience. From securing industrial control systems to safeguarding critical processes, your efforts More ❯