1 to 25 of 91 Penetration Testing Jobs in London

Life on the team Computacenter is growing our penetration testing capability and we are looking for an experienced penetration tester to support the delivery of vulnerability assessment and penetration testing services to Computacenter and our customers delivered services. As a highly skilled and motivated Penetration Tester, you will join our dynamic Cybersecurity team. In … this role, you will be responsible for identifying vulnerabilities in systems, applications, and networks through a variety of penetration testing methodologies. Your expertise will play a critical role in strengthening our security posture and safeguarding our valuable assets from cyber threats. We are keen to develop our own people and will look at individuals, you will be involved … Security Professionals. If you are looking for a team that offers development and flexibility look no further and apply today What you'll do A highly skilled and motivated Penetration Tester to join our dynamic cybersecurity team. In this role, you will be responsible for identifying vulnerabilities in our systems, applications, and networks through various penetration testing More ❯

We are looking for a Penetration Testing Engineer who has a strong passion for security at scale. You will be part of a team responsible for delivering continuous assessments. Your tasks will include solving complex technology problems, building tools to automate manual efforts, and influencing how Amazon services respond to and mitigate threats. Amazon security covers a wide … scale. As a Security Engineer, you will ensure our services, applications, and websites are designed and implemented with the highest security standards. Responsibilities include web application, network, and operational penetration testing, automating repetitive tasks, and creating threat mitigation plans. You will work directly with internal teams to solve challenging software problems. You should be able to produce results … successful candidate will possess troubleshooting, technical, and communication skills, and be capable of making complex decisions. CORE RESPONSIBILITIES Contribute to the design, implementation, and execution of security review and testing methodologies for critical production services, ensuring risks are remediated in collaboration with service teams. Perform design reviews, threat modeling, security reviews, penetration testing, and red teaming on More ❯

The team you'll be working with: Consultant - Offensive Security Testing Role Overview: We are seeking a highly skilled and experienced Offensive Security Consultant with a strong focus on threat intelligence and attack methods. The ideal candidate will manage and conduct advanced penetration testing engagements, leveraging threat intelligence to simulate real-world attacks across various environments, including … skills, and the ability to provide strategic, actionable recommendations to enhance our clients' security posture. What you'll be doing: Responsibilities: Lead and manage the full lifecycle of complex penetration testing engagements, applying a threat intelligence-led approach. Execute advanced penetration tests across environments such as applications, infrastructure, web, APIs, O365, Azure, AWS, and OT, using current … maintain detailed test plans and use cases informed by threat intelligence analysis. Identify and prioritize critical OT and IT assets based on potential threats and exposure. Plan and schedule testing engagements based on threat assessments and client needs. Produce clear, detailed reports with technical findings, business impact, and strategic remediation recommendations for diverse audiences. Communicate complex security concepts and More ❯

Senior Security Engineer, you will implement and maintain robust security systems and protocols across the IT infrastructure. You will conduct risk assessments and vulnerability scans, mitigate vulnerabilities identified in penetration testing, and implement preventative measures to protect against cyber threats. You will monitor the security infrastructure, detect and respond to potential threats, and help mentor the IT security … SSO Manage MDM/MAM and Conditional Access Manage security certificates and keys Manage IDS and IPS Manage PAM systems Deliver Cyber Security Awareness Training Remediate vulnerabilities identified during penetration testing Handle ad-hoc IT security projects Experience - Essential The successful candidate will have a good working knowledge and experience in managing the following technology stack: CrowdStrike EDR … Menlo Web Security Gateway KnowBe4 Digicert Certificates and Microsoft Certificate Services Ivanti or Automox patching AppCheck or Tenable WAS Desired Education: CISM, MS SC100, 200, 900, OSCP or other penetration testing certifications Industry: Financial services, SOC, Penetration Testing is desirable Personal Skills: Excellent interpersonal, written, and verbal communication skills The ability to handle multiple priorities, tasks More ❯

are looking for a technically exceptional and visionary Senior Manager to lead our Offensive Security function. This role is both strategic and hands-on, responsible for delivering high-impact penetration testing, attack surface management, and a mature bug bounty program. The ideal candidate will be a transformation leader with deep technical expertise in offensive security and a passion … Security will serve as both a strategic leader and hands-on technical expert, driving the evolution of our offensive security capabilities. This role is accountable for delivering high-impact penetration testing, managing our attack surface, and overseeing a global bug bounty program. With a strong focus on identifying control gaps and advancing purple team maturity, the ideal candidate … a transformation mindset, and a proven ability to lead and inspire high-performing teams in a dynamic, threat-informed environment. RESPONSIBILITIES Technical Leadership & Execution - Personally lead and execute advanced penetration tests, red/purple team exercises, and adversary emulation campaigns across cloud, application, and infrastructure layers. - Identify and exploit vulnerabilities to simulate real-world attack scenarios, validate detection and More ❯

SECFORCE is an independent offensive cyber security consultancy specialised in Penetration Testing and Adversary Simulation. Founded in 2008 out of love and passion for the hacking craft, we have grown into a well-respected company based in London, Malta and Greece, with teams across Europe working for top-tier organisations all over the world. What started as a … security. Tasks Collaborate with sales to understand client needs and position appropriate cybersecurity services Deliver technical presentations and demos that communicate the value and scope of our services (e.g., penetration testing, red teaming, DORA/ISO compliance, etc.) Support the preparation of proposals, statements of work (SOWs), and RFP/RFI responses Scope and define technical requirements and … or technical sales support role within cybersecurity or IT services Understanding of the cyber threat landscape Familiarity with AWS, Azure, or Google Cloud. Understanding of Cyber Services markets e.g. Penetration Testing, Red Team/Purple Team, Adversary Simulation, risk and compliance frameworks ISO 27001, NIST, DORA, CREST. TIBER etc.) Willingness to travel to regular F2F end user meetings More ❯

meetings to influence security automation standards across Amazon • Providing technical guidance to teams building on our Cataphract platform • Deep-dive session with our research team on their latest autonomous penetration testing capabilities Throughout the week, you might: • Partner with security teams to understand their challenges and demonstrate how autonomous solutions can help • Review critical security decisions made by … Track record of building and deploying automated security solutions in large-scale environments • Experience with formal methods, automated reasoning, or similar approaches to validating security decisions • Background in security testing, penetration testing, or vulnerability assessment • History of contributions to security automation or tooling in the broader security community • Experience driving adoption of new security technologies across large More ❯

up to date technical expertise in the ever changing and dynamic software world, Synergy Solutions International is now growing their team. Synergy Solutions Limited is now looking for a Penetration tester to join our growing team.We are hiring talented and motivated security consultants to join an exciting and diverse team, delivering a range of penetration testing.This is a … senior position and requires prior penetration testing and consultancy experience. Penetration tester Apply for this position Skills Performing penetration tests on a variety of systems, to a high standard, against set deadlines, particularly in the Infrastructure and Applications space Experience with Web, Mobile, API & Network Pentesting Education and awareness of current vulnerabilities, tools, and exploitationtechniques Designing … proof of concepts, demonstrating vulnerabilities to the wider business Utilising automation and vulnerability scanning where available Producing reports in a timely manner, to agreed standards Ensuring that penetration tests performed by the whole team are effective and scoped correctly Line managing security consultants, mentoring their development and suggesting training requirements Acting as a go-to person for technical and More ❯

scans. Code & Architecture Review: Conduct secure code reviews and architectural security assessments to identify risks early in the development process. Automation & Tooling: Enhance security automation capabilities by integrating security testing tools into CI/CD pipelines. Penetration Testing & Red Teaming: Facilitate internal and external penetration testing activities, helping to triage and remediate findings. Security Champion … modern programming languages (e.g., Python, Java, JavaScript, Go, or C#). Experience with cloud-native security (AWS, Azure, GCP) and securing containerized environments (Docker, Kubernetes). Proficiency in security testing tools such as Burp Suite, Endor, Semgrep, etc. Strong background in network security, including firewalls, IDS/IPS, VPNs, and secure network design. Hands-on experience with CI/ 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 ❯

CHECK Senior Infrastructure Penetration Tester PGI is a global consultancy that helps organisations build digital resilience. We deploy our people to implement solutions on behalf of clients or to support them in developing their capabilities. Our Penetration Testers work with organisations of all sizes and types to detect and remediate vulnerabilities. They help identify areas lacking sufficient protection. … could exploit, and makes recommendations to safeguard assets. What you'll be doing: Providing professional cybersecurity consultancy to internal and external stakeholders. Leading the delivery of PGI's infrastructure penetration testing. Collaborating on the design and delivery of new and existing service lines related to offensive security assessments. Supporting and often leading technical pre-sales, proposal writing, and client … ensure successful outcomes. Mentoring security consultants or clients by sharing knowledge and overseeing skill development. Participating in exercises such as Capture The Flag (CTF) challenges. Providing accurate scoping of penetration testing opportunities for sales activities. Supporting sales activities with proposals and client presentations. Supporting marketing with subject matter expertise and content development. Developing and maintaining technical skills and More ❯

My consultancy client who work with a number of household names in the Finance, Insurance and Retail sector are looking to hire a full-time Penetration Tester to support one of their key clients. This role is hybrid working and is working 2 days a week on the client site. In this role you will be responsible for delivering … comprehensive Penetration Testing Services to the end client s, ensuring work is performed to the highest professional standards. Key Responsibilities Conduct thorough penetration tests on infrastructure, web applications, APIs, mobile applications, and cloud environments. Perform vulnerability and cloud assessments using a variety of tools and techniques. Document testing procedures, findings, and recommendations in detailed reports for … and 9001 are robustly adhered to. Ensuring that the company’s security procedures ISO 27001 are robustly adhered to. Essential Skills & Experience 3 + years’ experience working as a Penetration Tester OSCP Certified Proficiency in penetration testing tools such as Burp Suite, Nessus etc. Good interpersonal skills. Problem solver. Experience of technical report writing. Has the ability More ❯

connectivity across the region. If you would like to learn more about this opportunity, feel free to reach out and apply today! Responsibilities: Lead full-scope, threat intelligence-led penetration testing across applications, infrastructure, cloud (AWS, Azure), APIs, OT/ICS, and O365. Develop sophisticated test plans and use cases based on emerging threats and attacker TTPs. Produce … advice. Work closely with client cybersecurity teams to prioritize and track vulnerability remediation, contributing to blue team effectiveness. Conduct ongoing research and contribute to thought leadership in threat-informed testing methodologies. Required Skills: 5+ years of professional experience in penetration testing, with a strong emphasis on threat intel and adversary emulation. Deep understanding of OT/IT More ❯

Conexus is currently sourcing for an experienced Penetration Test Manager to support the delivery of high-assurance cyber security projects for defence and critical national infrastructure clients.We're looking for someone who has operated as a Senior Penetration Tester within an operational environment and has been responsible for quality assuring the work of others. You may also bring … experience as an assessor for a penetration testing exam body or a relevant industry quality scheme. This role sits at the senior end of the delivery function and will suit someone who has worked on adversary simulation teams, taking ownership of oversight and assurance responsibilities. Key responsibilities: Conduct in-year sampling of technical reports to ensure adherence to … standalone Team Leaders, particularly those without peer-level technical support Provide ongoing guidance and technical input to the cyber assurance project team Key experience: Strong background as a Senior Penetration Tester with proven experience reviewing and assuring the output of others Experience within adversary simulation or red team operations Familiarity with formal assessment or examiner roles for pen testing More ❯

Conexus is currently sourcing for an experienced Penetration Test Manager to support the delivery of high-assurance cyber security projects for defence and critical national infrastructure clients. We're looking for someone who has operated as a Senior Penetration Tester within an operational environment and has been responsible for quality assuring the work of others. You may also … bring experience as an assessor for a penetration testing exam body or a relevant industry quality scheme. This role sits at the senior end of the delivery function and will suit someone who has worked on adversary simulation teams, taking ownership of oversight and assurance responsibilities. Key responsibilities: Conduct in-year sampling of technical reports to ensure adherence … standalone Team Leaders, particularly those without peer-level technical support Provide ongoing guidance and technical input to the cyber assurance project team Key experience: Strong background as a Senior Penetration Tester with proven experience reviewing and assuring the output of others Experience within adversary simulation or red team operations Familiarity with formal assessment or examiner roles for pen testing More ❯

security requirements are integrated into system designs and technology choices from the outset. Perform threat modelling exercises for cloud-native applications, microservices, and infrastructure components. Manage internal and external penetration testing engagements for Funding Circle applications, services, and cloud infrastructure. Oversee and enhance vulnerability management processes, focusing on strategic remediation, root cause analysis, and preventative measures. Contribute to … Strong knowledge of relevant security frameworks and standards (e.g., NIST CSF, CIS Benchmarks, OWASP ASVS). Exposure and knowledge of the MITRE ATT&CK framework. Experience effectively coordinating external penetration testing engagements and managing remediation efforts. Nice to have Relevant advanced security certifications (e.g., AWS Certified Security - Specialty, CISSP, CCSP, OSCP/OSWE). Experience with specific security More ❯

Your mission As a Penetration Test Delivery Manager, you are responsible for the seamless execution of Intigriti's PTaaS engagements. Acting as a trusted advisor and delivery lead, you ensure each test is scoped effectively, executed with technical excellence, and communicated clearly to clients. You will work closely with researchers across time zones, translating findings into business-aligned outcomes … and priorities. Collaborate with Intigriti's triage and researcher teams to ensure test results are vetted and validated efficiently. Translate validated findings and technical data into a high-quality penetration test report that aligns with client expectations and business impact. Coordinate with Intigriti's global researcher community to align expectations, clarify scope, and ensure consistent, high-quality engagement delivery. … to pre-sales technical scoping and product discussions as an experienced technical voice within the Solutions Engineering function. What you'll bring At least 3 years of hands-on penetration testing experience across domains such as web applications, APIs, infrastructure, and mobile. Proven ability to lead and deliver penetration testing engagements in a consulting, delivery, or More ❯

part of a truly team driven environment. As a First Responder, you must display excellent outside-the-box thinking and communication skills. DESIRABLE EXPERIENCE. Vulnerability Assessment experience. Knowledge of Penetration testing tools and techniques. Network and firewall alert management. Active Directory and group policy management experience. Experience in deploying, managing, and supporting of endpoint security platforms Information security … in line with business requirements. PowerShell scripting. Experience with server infrastructure deployment, configuration and support. Ability to produce high-quality technical reports. Experience with Cyber Essentials and Essentials Plus. Penetration testing experience. Security related certifications (BTL1, BTL2, SC200, CySA+, Sec+, etc). Shift Allowance: additional 5k salary uplift for being on shift Performance-related, discretionary end-of-year More ❯

Security Engineer, you will implement and maintain robust security systems and protocols across the our IT infrastructure. You will conduct risk assessments and vulnerability scans, mitigate vulnerabilities identified in penetration testing, and implement preventative measures to protect against cyber threats. You will monitor the security infrastructure and detect and respond to potential threats. You will help mentor and … Manage MDM\MAM and Conditional Access Manage security certificates and keys. Manage IDS and IPS. Manage PAM systems Deliver Cyber Security Awareness Training Remediate vulnerabilities and weaknesses identified during penetration testing. Ad-hoc IT security projects Experience Essential The successful candidate will have a good working knowledge and experience in managing the majority of the following technology stack CrowdStrike … Microsoft Certificate Services Ivanti or Automox patching AppCheck or Tenable WAS Kali Linux (NMAP, Metasploit, BurpSuite, John etc) Desired Education: CISM, MS SC100, 200 and 900, OSCP or other penetration testing qualifications. Industry: Financial services, SOC, Pentesting is desirable Personal Skills: Excellent inter-personal, written and verbal communication skills The ability to handle multiple priorities, tasks and projects More ❯

Conditional Access systems Maintain security certificates, encryption keys, and IDS/IPS systems Deliver cybersecurity awareness training and lead ad-hoc security projects Support and resolve issues identified during penetration testing Ideal Experience We're looking for someone with strong hands-on experience in most of the following technologies: Essential: CrowdStrike EDR Mimecast Duo, Okta Rapid7 IVM, Tenable … patching Kali Linux, Metasploit, NMAP, BurpSuite Candidate Profile Professional certifications such as CISM, MS SC100/200/900, OSCP are advantageous Background in financial services, SOC environments, or penetration testing preferred Strong interpersonal and communication skills, with the ability to engage across teams and deliver training effectively Able to manage multiple priorities and collaborate cross-functionally What More ❯

Conditional Access systems Maintain security certificates, encryption keys, and IDS/IPS systems Deliver cybersecurity awareness training and lead ad-hoc security projects Support and resolve issues identified during penetration testing Ideal Experience We're looking for someone with strong hands-on experience in most of the following technologies: Essential: CrowdStrike EDR Mimecast Duo, Okta Rapid7 IVM, Tenable … patching Kali Linux, Metasploit, NMAP, BurpSuite Candidate Profile Professional certifications such as CISM, MS SC100/200/900, OSCP are advantageous Background in financial services, SOC environments, or penetration testing preferred Strong interpersonal and communication skills, with the ability to engage across teams and deliver training effectively Able to manage multiple priorities and collaborate cross-functionally What More ❯

troubleshoot issues with A/V systems in meeting rooms. Assist in the development of IT policies and procedures Contribute to the implementation and monitoring of security measures and penetration testing Perform other duties as assigned by the IT Manager or Director of Digital Transformation Nature and Scope At the Energy Institute, technology isn't just a tool … abilities and the capacity to diagnose and resolve complex technical issues efficiently. Excellent customer service skills, with a user-focused approach. Solid cybersecurity awareness and a foundational understanding of penetration testing methodologies or security auditing principles. Demonstrable experience in incident response, particularly in identifying, containing, and escalating cyber incidents. Experience in Microsoft Windows systems administration, particularly Windows Server More ❯

troubleshoot issues with A/V systems in meeting rooms. Assist in the development of IT policies and procedures Contribute to the implementation and monitoring of security measures and penetration testing Perform other duties as assigned by the IT Manager or Director of Digital Transformation Nature and Scope At the Energy Institute, technology isn't just a tool … abilities and the capacity to diagnose and resolve complex technical issues efficiently. Excellent customer service skills, with a user-focused approach. Solid cybersecurity awareness and a foundational understanding of penetration testing methodologies or security auditing principles. Demonstrable experience in incident response, particularly in identifying, containing, and escalating cyber incidents. Experience in Microsoft Windows systems administration, particularly Windows Server More ❯

SECFORCE is an independent offensive cyber security consultancy specialised in Penetration Testing and Adversary Simulation. Founded in 2008 out of love and passion for the hacking craft, we have grown into a well-respected company based in London, Malta and Greece, with teams across Europe working for top-tier organisations all over the world. What started as a … to align on partner strategy Requirements 3+ years of experience in channel sales partner management Good understanding of the cyber threat landscape Understanding of the cyber services markets e.g. Penetration Testing, Red Team/Purple Team, Adversary Simulation) Excellent communication, negotiation, and interpersonal skills Self-starter with a results-oriented mindset and the ability to work independently Experience More ❯

retain, and develop talent and expertise, including application security specialists. Set and maintain the team's culture and tone. Business Continuity and Disaster Recovery : Contribute to the development and testing of business continuity and disaster recovery plans from an information security perspective, including considerations for application security. Security Monitoring and Incident Response : Establish and maintain processes for continuous security … and controls, including but not limited to, firewalls, intrusion detection/prevention systems, security information and event management (SIEM), data loss prevention (DLP), vulnerability management tools, and application security testing tools. Secure Software Development Lifecycle (SSDLC) : Integrate security best practices into the software development lifecycle. Work closely with development teams to ensure secure coding practices, conduct comprehensive security testing (e.g., penetration testing, vulnerability scanning, application security reviews), and promote a security-aware development culture with a strong application security focus. Third-Party Risk Management : Develop and implement a program for assessing and managing the information security risks, including application security risks, associated with third-party vendors and service providers. Security Awareness and Training : Develop and deliver More ❯