126 to 145 of 145 Penetration Testing Jobs in London

Security analyst to join their growing and dedicated team in providing some the UKs largest organisations with a range of services such as, pen testing, major incident response, digital forensics, and more. This is a great opportunity for an individual to further their security career in a focused environment More ❯

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 Queueing and Streaming More ❯

using a risk-based approach with a focus on following areas Automation of security controls, security hardening of the developer and IaC processes (building, testing, release), supply chain security (part of the build process), related metrics and monitoring/audits Network, VM & container image and system hardening, Cloud issues … and misconfigurations Endpoint Security, Infrastructure Identity and Access Management, SIEM, Threat intelligence, common misconfigs (DNS, email, networking, etc.) Organising and performing penetration testing of our infrastructure, and collaborating with external parties on those tests. Picking tools, methods and approaches to maintain and improve the security stance of the More ❯

or AWS Write clean, maintainable code following best practices and team standards Participate in code reviews and contribute to improving development processes Implement robust testing strategies and maintain high code quality Collaborate with Data Science and Delivery teams to understand and deliver business requirements Apply security-first development practices … with healthcare technology and regulatory requirements (ISO13485, ISO27001) Desired Skills: Experience in building mobile apps Experience working in a healthcare technology company Experience of penetration testing More ❯

or AWS Write clean, maintainable code following best practices and team standards Participate in code reviews and contribute to improving development processes Implement robust testing strategies and maintain high code quality Collaborate with Data Science and Delivery teams to understand and deliver business requirements Apply security-first development practices … with healthcare technology and regulatory requirements (ISO13485, ISO27001) Desired Skills: Experience in building mobile apps Experience working in a healthcare technology company Experience of penetration testing More ❯

SRE processes and policies Recommending and implementing ways of driving operational efficiency and driving down our cost to run, without impacting service Assisting in penetration testing for Cloud through liaising with our provider, providing technical details, and environment setup Incident management Here's what we're looking for More ❯

Months (Possible Extension) What You Will Be Doing Tech Breakdown: 50% Automation 50% Manual Daily Responsibilities SQL Injection & Cross-site scripting Grey box penetration testing, and perform access control Identify and exploit vulnerabilities to assess security risks. Communicate with clients about security issues and provide tailored solutions. Collaborate More ❯

in safeguarding our environment. You'll also contribute to building custom security tools to enhance our capabilities and support security assessments, threat modelling, and penetration testing. You'll come with hands-on experience with AWS and Cloudflare and be comfortable working with Infrastructure as Code tools like Terraform. A More ❯

Incident Response: Own and manage critical security processes, including threat detection and incident response, vulnerability and patch management, security advisory and consultancy, and security testing, including the scoping and organisation of external penetration testing. Strategic Reporting and Collaboration: Collaborate closely with the leadership team, providing insightful reports on More ❯

Penetration Tester - Remote up to 50K Basic Salary Are you passionate about cybersecurity and eager to make an impact? We have an exciting opportunity for a Penetration Tester to join our growing organization. Why Join Us? Diverse Challenges: Work on a variety of applications including Web, Infrastructure (Internal … Remote Flexibility: Enjoy the freedom and convenience of a fully remote position. What We're Looking For: Experience: 2+ years of commercial experience in penetration testing. Skills: Proficiency in testing web applications, infrastructure, cloud environments, code reviews, and mobile applications. Attributes: A passion for cybersecurity, a drive for More ❯

Manage MDM platforms (Intune, Jamf) across the organisation. Implement and maintain IT security policies aligned with global standards. Coordinate external security assessments, audits, and penetration testing. Develop and maintain business continuity and disaster recovery strategies. Security Strategy & Compliance Regularly audit system configurations and permissions. Lead endpoint protection, external threat … Access, and SSO. Proficiency with MDM tools such as Intune and Jamf. Solid knowledge of security standards and compliance practices. Experience coordinating audits and penetration testing. Scripting/automation skills (e.g., PowerShell). Strong troubleshooting and project management capabilities. Excellent communication and stakeholder management skills. Experience working in multi More ❯

will be working on the Finance System Replacement project as a Test Analyst on a 6 months contract, to drive a full suite of testing: Functional Integrations E2E Non-functional Performance & cutover/rollback Co-ordination of possible PEN testing Logistics Preparation and support of UAT by business … s ERP 7.9) to a SaaS solution (Unit 4's ERPx). The Successful Applicant What you need to be successful: Experience of testing a Finance system moving from on-prem into the cloud (could be with Unit 4, SAP, Microsoft, or Oracle). Experience of working with senior … in Azure Dev Ops (both active use of and compiling reports from). Should haves: Experience of working within the HEI sector. Specific ERPx testing experience. What's on Offer You will get £350 - £400 Per Day (OUTSIDE IR35). More ❯

will be working on the Finance System Replacement project as a Test Manager on a 6 months contract, to drive a full suite of testing: Functional Integrations E2E Non-functional Performance & cutover/rollback Co-ordination of possible PEN testing Logistics Preparation and support of UAT by business … s ERP 7.9) to a SaaS solution (Unit 4's ERPx). The Successful Applicant What you need to be successful: Experience of testing a Finance system moving from on-prem into the cloud (could be with Unit 4, SAP, Microsoft, or Oracle). Experience of working with senior … rather than force) the project through to success. Experienced in Azure Dev Ops. Should haves: Experience of working within the HEI sector. Specific ERPx testing experience. What's on Offer £400 to £500 per day. This role offers a unique opportunity for a Test Manager to further their career More ❯

vulnerability disclosure and bug bounty (experience managing a bug bounty program is a plus but not required). 3 years experience manual Web App testing experience. Strong technical knowledge of OWASP top 10. Comfortable using security testing tools including Burpsuite. Excellent written and verbal communication skills. Experience using More ❯

Purpose: The individual will be looking to deliver robust control testing, aligned with regulatory and internal standards, to ensure control design adequacy and effectiveness. The role supports RCSA processes and leads evidence-based evaluations. Key Responsibilities: Evaluate and test security controls against NIST 800-53 requirements Execute scheduled control … testing, document results, and analyse weaknesses Review and capture control evidence for audit and compliance purposes Collaborate with control owners and remediation teams to resolve findings Use Archer to record outcomes and align with risk control inventory Skills & Experience: Expertise in control design, encryption, and testing (incl. vulnerability … pen testing) Familiarity with Archer and RCSA frameworks Understanding of both technical and non-technical control types (HR, systems, assets) Strong audit mindset and regulator-facing assurance experience More ❯

Purpose: The individual will be looking to deliver robust control testing, aligned with regulatory and internal standards, to ensure control design adequacy and effectiveness. The role supports RCSA processes and leads evidence-based evaluations. Key Responsibilities: Evaluate and test security controls against NIST 800-53 requirements Execute scheduled control … testing, document results, and analyse weaknesses Review and capture control evidence for audit and compliance purposes Collaborate with control owners and remediation teams to resolve findings Use Archer to record outcomes and align with risk control inventory Skills & Experience: Expertise in control design, encryption, and testing (incl. vulnerability … pen testing) Familiarity with Archer and RCSA frameworks Understanding of both technical and non-technical control types (HR, systems, assets) Strong audit mindset and regulator-facing assurance experience More ❯

team in supporting and delivering all aspects of MI - BAU encompassing data warehouse back end maintenance and Housekeeping - Support annual Disaster Recovery invoking/testing - Contribute to design, build and implementation of new reports and applications/interfaces. - Facilitate internal/external Audits and Penetration Testing. Remediation General More ❯

be successful: Some proven experience or qualifications in offensive security. For example: Academic background in cyber security or software engineering. Industry experience as a penetration tester or software engineer. A proven track record on bug bounty or hacking platforms. Industry qualifications such as: CREST Practitioner Security Analyst (CPSA) CREST … Registered Penetration Tester (CRT) CREST Certified Web Application Tester (CCT APP) Offensive Security Certified Professional (OSCP) Offensive Security Web Expert (OSWE) Comfortability with client-facing calls in a consultancy setting. Excellent technical reporting skills. Hiring process: Company intro (30 minutes, remote): initial chat with People team for you to More ❯

be successful: Some proven experience or qualifications in offensive security. For example: Academic background in cyber security or software engineering. Industry experience as a penetration tester or software engineer. A proven track record on bug bounty or hacking platforms. Industry qualifications such as: CREST Practitioner Security Analyst (CPSA). … CREST Registered Penetration Tester (CRT). CREST Certified Web Application Tester (CCT APP). Offensive Security Certified Professional (OSCP). Offensive Security Web Expert (OSWE). Comfortability with client-facing calls in a consultancy setting. Excellent technical reporting skills. Hiring process: Company intro (30 minutes, remote): initial chat with More ❯

HackerOne is a global leader in offensive security solutions. Our HackerOne Platform combines AI with the ingenuity of the largest community of security researchers to find and fix security, privacy, and AI vulnerabilities across the software development lifecycle. The platform More ❯