1 to 25 of 182 Permanent Penetration Testing Jobs in London

Senior Consultant If you have experience in penetration testing and are seeking to enhance your skills to become a subject matter expert, consider exploring what we have to offer! This is a hybrid role with the flexibility to work both virtually and from our London office. Aon is … helping our colleagues and clients succeed. What the day will look like As a Senior Consultant, you can expect to get involved in: Application penetration testing and application source code review. Cloud platform penetration testing. Vulnerability and penetration assessments on internal and external infrastructure. Applying and … pairs a healthy combination of autonomy and senior level support, together with a significant investment in your learning and professional development. Our international Security Testing team specializes in application and network infrastructure security, red teaming, and source code review, publishes books and security blogs, contributes to open-source software More ❯

Penetration Tester 3-6-Month contract – Inside IR35 – up to £590 a day London based – Hybrid working (3 days office based) Must be eligible for SC Clearance. Must have CREST experience Role Overview: We are seeking a highly skilled and experienced Penetration Tester with a strong focus understanding … on threat intelligence and attack methods. The ideal candidate will be responsible for managing and conducting advanced penetration testing engagements, leveraging threat intelligence to simulate real-world attacks across a variety of environments, including OT, IT, web applications, cloud infrastructure, and APIs. This role requires a deep understanding … the ability to provide strategic and actionable recommendations to significantly enhance our clients' security posture. Responsibilities: Lead and manage the full lifecycle of complex penetration testing engagements, applying a strong threat intelligence-led approach. Execute advanced penetration tests across a broad range of environments (applications, infrastructure, web More ❯

Penetration Tester 3-6-Month contract – Inside IR35 – up to £590 a day London based – Hybrid working (3 days office based) Must be eligible for SC Clearance. Must have CREST experience Role Overview: We are seeking a highly skilled and experienced Penetration Tester with a strong focus understanding … on threat intelligence and attack methods. The ideal candidate will be responsible for managing and conducting advanced penetration testing engagements, leveraging threat intelligence to simulate real-world attacks across a variety of environments, including OT, IT, web applications, cloud infrastructure, and APIs. This role requires a deep understanding … the ability to provide strategic and actionable recommendations to significantly enhance our clients' security posture. Responsibilities: Lead and manage the full lifecycle of complex penetration testing engagements, applying a strong threat intelligence-led approach. Execute advanced penetration tests across a broad range of environments (applications, infrastructure, web More ❯

for the challenges of today and tomorrow. Essential Duties and Responsibilities: As a Lead InfoSec Consultant, you'll take the lead in executing advanced penetration tests and vulnerability assessments across a diverse portfolio of applications. This is a hands-on, technical role where you'll actively identify, exploit, and … the SDLC, and playing a critical role in protecting the organisation's digital assets. The successful candidate will play a hands-on role in testing the security of applications, networks, and systems, while ensuring that security standards are integrated into the development process. Key Responsibilities: Penetration Testing & Vulnerability Assessment: Conduct and oversee regular penetration tests and vulnerability assessments on applications, networks, systems, and infrastructures. Identify, exploit, and document vulnerabilities, including demonstrating the business impact of potential exploits. Analyse and prioritise vulnerabilities based on risk and provide detailed technical reports with recommended remediation steps for developers More ❯

Penetration Tester – CREST Certified Location: Remote, UK Job Type: Full-time/Permanent Reporting to: Software Engineering Manager (QA Automation) Join TLScontact – Secure the Future of Global Visa & Immigration Services! At TLScontact , we specialize in delivering seamless and secure visa and immigration solutions for governments and travelers worldwide. Security … is at the heart of our digital transformation, and we are looking for a Security Testing Engineer (Pentester) to help safeguard our platforms and applications. If you are passionate about penetration testing, vulnerability analysis, and secure development, this role is perfect for you! You will work closely … software engineering teams to identify security risks, implement best practices, and enhance the security posture of our digital services. Your Mission Perform offensive security testing (penetration testing) on web applications and services. Conduct manual and automated code analysis to detect vulnerabilities and non-trivial security issues. Support More ❯

Penetration Tester – CREST Certified Location: Remote, UK Job Type: Full-time/Permanent Reporting to: Software Engineering Manager (QA Automation) Join TLScontact – Secure the Future of Global Visa & Immigration Services! At TLScontact , we specialize in delivering seamless and secure visa and immigration solutions for governments and travelers worldwide. Security … is at the heart of our digital transformation, and we are looking for a Security Testing Engineer (Pentester) to help safeguard our platforms and applications. If you are passionate about penetration testing, vulnerability analysis, and secure development, this role is perfect for you! You will work closely … software engineering teams to identify security risks, implement best practices, and enhance the security posture of our digital services. Your Mission Perform offensive security testing (penetration testing) on web applications and services. Conduct manual and automated code analysis to detect vulnerabilities and non-trivial security issues. Support More ❯

Penetration Tester – CREST Certified Location: Remote, UK Job Type: Full-time/Permanent Reporting to: Software Engineering Manager (QA Automation) Join TLScontact – Secure the Future of Global Visa & Immigration Services! At TLScontact , we specialize in delivering seamless and secure visa and immigration solutions for governments and travelers worldwide. Security … is at the heart of our digital transformation, and we are looking for a Security Testing Engineer (Pentester) to help safeguard our platforms and applications. If you are passionate about penetration testing, vulnerability analysis, and secure development, this role is perfect for you! You will work closely … software engineering teams to identify security risks, implement best practices, and enhance the security posture of our digital services. Your Mission Perform offensive security testing (penetration testing) on web applications and services. Conduct manual and automated code analysis to detect vulnerabilities and non-trivial security issues. Support More ❯

London, United Kingdom Posted on 24/02/2025 Job Description: Security Testing Engineer Location: Remote with occasional travel as required Employment Type: Permanent About the Role Scrumconnect Consulting is looking for a Security Testing Engineer to ensure the security, resilience, and compliance of GOV.UK digital services … ensuring adherence to government security policies and DDAT frameworks . You will work closely with developers, security architects, and business stakeholders to embed security testing into Agile development workflows and DevSecOps pipelines. As a Security Testing Engineer , you will conduct static and dynamic security assessments, penetration testing … Test Planning & Execution Develop, implement, and execute comprehensive security test plans for GOV.UK digital services. Identify security vulnerabilities through static and dynamic application security testing (SAST & DAST) . Ensure security testing is seamlessly integrated into CI/CD pipelines and DevSecOps processes. Define security requirements and best practices More ❯

Job Title: Penetration Tester Role: Are you a cybersecurity enthusiast with expertise in penetration testing across infrastructure, web applications, mobile, and cloud environments? Join our team near Doncaster or Manchester, where you'll play a key role in securing our clients' digital landscapes. Work on cutting-edge … projects in infrastructure penetration testing. Collaborate with a talented and dynamic cybersecurity team. Enjoy opportunities for growth and development in the cybersecurity field. Responsibilities: Conduct penetration testing on infrastructure, web applications, mobile platforms, and cloud environments to uncover vulnerabilities. Analyse testing outcomes and provide actionable recommendations … to improve security measures. Collaborate with cross-functional teams to develop and implement security strategies. Stay updated on emerging cybersecurity threats and adapt testing methodologies accordingly. Skills/Must Have: Proven experience in penetration testing for infrastructure, web applications, mobile, and cloud environments. Strong understanding of networking More ❯

Job Title: Penetration Tester Role: Are you a cybersecurity enthusiast with expertise in penetration testing across infrastructure, web applications, mobile, and cloud environments? Join our team near Doncaster or Manchester, where you'll play a key role in securing our clients' digital landscapes. Work on cutting-edge … projects in infrastructure penetration testing. Collaborate with a talented and dynamic cybersecurity team. Enjoy opportunities for growth and development in the cybersecurity field. Responsibilities: Conduct penetration testing on infrastructure, web applications, mobile platforms, and cloud environments to uncover vulnerabilities. Analyse testing outcomes and provide actionable recommendations … to improve security measures. Collaborate with cross-functional teams to develop and implement security strategies. Stay updated on emerging cybersecurity threats and adapt testing methodologies accordingly. Skills/Must Have: Proven experience in penetration testing for infrastructure, web applications, mobile, and cloud environments. Strong understanding of networking More ❯

Job Title: Penetration Tester Role: Are you a cybersecurity enthusiast with expertise in penetration testing across infrastructure, web applications, mobile, and cloud environments? Join our team near Doncaster or Manchester, where you'll play a key role in securing our clients' digital landscapes. Work on cutting-edge … projects in infrastructure penetration testing. Collaborate with a talented and dynamic cybersecurity team. Enjoy opportunities for growth and development in the cybersecurity field. Responsibilities: Conduct penetration testing on infrastructure, web applications, mobile platforms, and cloud environments to uncover vulnerabilities. Analyse testing outcomes and provide actionable recommendations … to improve security measures. Collaborate with cross-functional teams to develop and implement security strategies. Stay updated on emerging cybersecurity threats and adapt testing methodologies accordingly. Skills/Must Have: Proven experience in penetration testing for infrastructure, web applications, mobile, and cloud environments. Strong understanding of networking More ❯

Penetration Testing Team Lead - AVP Penetration Testing Team Lead - AVP Apply locations London time type Full time posted on Posted 3 Days Ago job requisition id -WD Do you want your voice heard and your actions to count? Discover your opportunity with Mitsubishi UFJ Financial Group … hat arrangement. Develop and maintain governance structure of red team operations and train, and mentor other members of the Red Team. Develop and execute penetration testing plans, including network, web application, and social engineering assessments. Collaborate with SOC team and selected vendor to plan and execute annual purple … testing. Identify security risks and vulnerabilities through simulated attacks, and helping the organization understand the potential impact. Manage Red Team tools and the Security Testing & Validation Platform. Lead and manage a team of security professionals and vendor resources to conduct regular risk assessments to identify and exploit vulnerabilities, mis 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 … 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 … 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. More ❯

salary is totally dependant on your experience, from 3 years to 30 years. The requirements are as follows: Manual Testers/QA Analysts & Automation Testing Execute test cases manually. Focus on UI/UX, functionality, user stories, and regression. Tools: Excel, TestRail, Zephyr, Jira, Quality Center. Create and execute … automated test scripts. Improve test coverage, speed up regression cycle. Tools: UFT (Unified Functional Testing) – enterprise tool for functional/regression testing (VBScript). Selenium Cypress Appium Playwright , TestComplete , Ranorex , Robot Framework . Multiple Deliverables SDET Testing (Software Development Engineer in Test) Ideally Developer-tester hybrid. Write … testing frameworks and also contribute to production code. Strong coding background (Java, Python, C#, etc.). Build integration and end-to-end automation pipelines. Performance/Load Testing Simulates real-world load and stress on systems. Ensures system performance, scalability, and reliability. Tools: JMeter , LoadRunner , Gatling , Neoload . More ❯

salary is totally dependant on your experience, from 3 years to 30 years. The requirements are as follows: Manual Testers/QA Analysts & Automation Testing Execute test cases manually. Focus on UI/UX, functionality, user stories, and regression. Tools: Excel, TestRail, Zephyr, Jira, Quality Center. Create and execute … automated test scripts. Improve test coverage, speed up regression cycle. Tools: UFT (Unified Functional Testing) – enterprise tool for functional/regression testing (VBScript). Selenium Cypress Appium Playwright , TestComplete , Ranorex , Robot Framework . Multiple Deliverables SDET Testing (Software Development Engineer in Test) Ideally Developer-tester hybrid. Write … testing frameworks and also contribute to production code. Strong coding background (Java, Python, C#, etc.). Build integration and end-to-end automation pipelines. Performance/Load Testing Simulates real-world load and stress on systems. Ensures system performance, scalability, and reliability. Tools: JMeter , LoadRunner , Gatling , Neoload . More ❯

Synack's Penetration Testing as a Service platform manages customers' attack surfaces by discovering new assets, pentesting for critical vulnerabilities and gaining visibility into the root causes of security risks. We are committed to making the world more secure by harnessing a talented, vetted community of security researchers … to deliver continuous penetration testing and vulnerability management, with actionable results. Synack's PTaaS platform has uncovered more than 71,000 exploitable vulnerabilities to date, protecting a growing list of Global 2000 customers and U.S. agencies in a FedRAMP Moderate Authorized environment. For more information, please visit . … as a technical advisor and advocate, helping our customers achieve maximum value from our product and services. You will have a deep understanding of penetration testing attack surfaces and a knack for developing unique solutions that align to customer goals. Your technical knowledge and client-focused approach enable More ❯

Role Title: Cyber Security Engineer - Penetration & Vulnerability Testing Client Details: Oliver James has partnered with a leading distribution organisation with a strong market presence and significant investment in their IT security strategy. They are expanding their Cybersecurity team to enhance their vulnerability management and testing capabilities. This … is an exciting opportunity for an experienced Cyber Security Engineer to contribute to strengthening the organisation's security posture through targeted vulnerability assessments and penetration testing, primarily focused on Microsoft Azure and associated technologies. Description: The Cyber Security Engineer will play a critical role in identifying and mitigating … security vulnerabilities across the organisation's technology estate. You will lead regular vulnerability assessments, conduct penetration tests, and work collaboratively with IT teams to address risks and improve security standards. Key Responsibilities: Perform penetration testing and vulnerability assessments across cloud and on-premises environments. Focused security testing More ❯

Security Testing Consultant (Pen Tester) Location: London SE1 Salary: £45,000 - £60,000 depending on relevant experience Hours: Full-time, Monday to Friday Work Location: Office-based during probation, then hybrid (3 days office/2 days WFH) Full time/Permanent Remarkable Jobs are recruiting on behalf of … a dynamic and growing cybersecurity organisation. We are seeking a Security Testing Consultant (Pen Tester) to join their expert team in London SE1. This is a fantastic opportunity for an experienced professional to take on a varied, high-impact role conducting in-depth security assessments across multiple platforms. Security … Testing Consultant (Pen Tester) Role: As a Security Testing Consultant (Pen Tester) , you will play a vital role in identifying and mitigating vulnerabilities in client systems including applications, infrastructure, cloud platforms, APIs, and mobile technologies. You'll be part of a collaborative team, providing expert guidance and helping More ❯

growing, agile cyber consultancy working with UK and international clients. You’ll join a high-performing Threat Operations team, delivering advanced offensive security services—penetration testing, phishing simulations, code reviews—and play a key role in shaping how they support their clients' evolving needs. 🔍 What You’ll Do … Lead the creation and delivery of our clients' offensive security services Perform penetration testing, code reviews, phishing simulations, and assessments Travel internationally to support partner nations with cyber capability development Design and deliver bespoke training and mentoring packages Collaborate across the Threat Operations team to share insights and … strengthen their cyber intelligence 🧠 What You Bring Expertise in advanced penetration testing (web & desktop apps), phishing, and code review Strong problem-solving, communication, and stakeholder management skills Ability to teach and adapt content for global, multicultural audiences Self-starter mindset—comfortable working solo or in a team, locally More ❯

growing, agile cyber consultancy working with UK and international clients. You’ll join a high-performing Threat Operations team, delivering advanced offensive security services—penetration testing, phishing simulations, code reviews—and play a key role in shaping how they support their clients' evolving needs. 🔍 What You’ll Do … Lead the creation and delivery of our clients' offensive security services Perform penetration testing, code reviews, phishing simulations, and assessments Travel internationally to support partner nations with cyber capability development Design and deliver bespoke training and mentoring packages Collaborate across the Threat Operations team to share insights and … strengthen their cyber intelligence 🧠 What You Bring Expertise in advanced penetration testing (web & desktop apps), phishing, and code review Strong problem-solving, communication, and stakeholder management skills Ability to teach and adapt content for global, multicultural audiences Self-starter mindset—comfortable working solo or in a team, locally More ❯

growing, agile cyber consultancy working with UK and international clients. You’ll join a high-performing Threat Operations team, delivering advanced offensive security services—penetration testing, phishing simulations, code reviews—and play a key role in shaping how they support their clients' evolving needs. 🔍 What You’ll Do … Lead the creation and delivery of our clients' offensive security services Perform penetration testing, code reviews, phishing simulations, and assessments Travel internationally to support partner nations with cyber capability development Design and deliver bespoke training and mentoring packages Collaborate across the Threat Operations team to share insights and … strengthen their cyber intelligence 🧠 What You Bring Expertise in advanced penetration testing (web & desktop apps), phishing, and code review Strong problem-solving, communication, and stakeholder management skills Ability to teach and adapt content for global, multicultural audiences Self-starter mindset—comfortable working solo or in a team, locally More ❯

Pentest People is a UK-based security consultancy specialising in providing Penetration Testing as a Service to all its clients. We are seeking a Pre-sales Consultant to support our Sales team by providing technical expertise to customers and prospects throughout the sales process. Reporting directly to our … The primary responsibility of the role is to determine the scope of work for various Cyber Security products and services, with a focus on Penetration Testing. You will work with internal teams to create comprehensive proposals, ensuring a smooth sales experience and presenting the company in the best possible … The ideal candidate will have a background in Technical Sales Support, along with a strong interest in Cyber Security (knowledge of Cyber Security or Penetration Testing is a plus). You should excel at building professional relationships based on trust and credibility, and be comfortable in a client More ❯

Pentest People is a UK-based security consultancy specialising in providing Penetration Testing as a Service to all its clients. We are seeking a Pre-sales Consultant to support our Sales team by providing technical expertise to customers and prospects throughout the sales process. Reporting directly to our … The primary responsibility of the role is to determine the scope of work for various Cyber Security products and services, with a focus on Penetration Testing. You will work with internal teams to create comprehensive proposals, ensuring a smooth sales experience and presenting the company in the best possible … The ideal candidate will have a background in Technical Sales Support, along with a strong interest in Cyber Security (knowledge of Cyber Security or Penetration Testing is a plus). You should excel at building professional relationships based on trust and credibility, and be comfortable in a client More ❯

Penetration Tester Work Across Internal Security, Compliance & Client Engagements A fast-growing security-focused business is looking for a Penetration Tester to join their expanding team. This is a hands-on, cross-functional role where you'll support internal security maturity, contribute to client-facing consultancy projects, and … SOC to simulate attack scenarios and improve detection Run internal vulnerability assessments and pen tests to support compliance and readiness for audits Deliver external penetration testing services — from scoping and testing to risk analysis and reporting What We're Looking For: Practical experience in penetration testing More ❯

Penetration Tester Work Across Internal Security, Compliance & Client Engagements A fast-growing security-focused business is looking for a Penetration Tester to join their expanding team. This is a hands-on, cross-functional role where you'll support internal security maturity, contribute to client-facing consultancy projects, and … SOC to simulate attack scenarios and improve detection Run internal vulnerability assessments and pen tests to support compliance and readiness for audits Deliver external penetration testing services — from scoping and testing to risk analysis and reporting What We're Looking For: Practical experience in penetration testing More ❯