City Of London, England, United Kingdom Hybrid / WFH Options
Hamilton Barnes 🌳
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. … 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 RedTeam/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 articles. Skills … bounty platforms and vulnerability disclosure best practices. Benefits: Competitive salary with regular performance reviews Annual training and personal development plan Access to conferences and professional events Supportive and knowledgeable team culture Hybrid work flexibility after probation Salary: Competitive (dependent on experience More ❯
with hybrid working available post-probation) Salary: 45,000 - 60,000 + benefits Are you a skilled Penetration Tester looking to join a collaborative and mission-driven cyber security team? This Security Testing Consultant position offers the chance to deliver high-impact security assessments across web applications, infrastructure, cloud platforms, APIs, mobile, and wireless systems. You'll be part … of a close-knit team delivering trusted security testing and advisory services for clients across various industries. If you're passionate about offensive security and want to contribute to RedTeam activities while supporting junior team members, this role is for you. What You'll Be Doing: Conduct web and mobile application assessments, plus API … high-quality technical reports and confidently present findings to clients. Support remediation efforts and provide client-facing consultancy. Help develop internal testing methodologies and contribute to RedTeam and social engineering operations. Support junior team members and engage in knowledge sharing. Key Skills & Experience: 3-5 years' penetration testing experience. Strong understanding of OWASP, SSL/ More ❯
City of London, London, Grange, United Kingdom Hybrid / WFH Options
Applause IT Recruitment Ltd
with hybrid working available post-probation) Salary: £45,000 - £60,000 + benefits Are you a skilled Penetration Tester looking to join a collaborative and mission-driven cyber security team? This Security Testing Consultant position offers the chance to deliver high-impact security assessments across web applications, infrastructure, cloud platforms, APIs, mobile, and wireless systems. You'll be part … of a close-knit team delivering trusted security testing and advisory services for clients across various industries. If you're passionate about offensive security and want to contribute to RedTeam activities while supporting junior team members, this role is for you. What You'll Be Doing: Conduct web and mobile application assessments, plus API … high-quality technical reports and confidently present findings to clients. Support remediation efforts and provide client-facing consultancy. Help develop internal testing methodologies and contribute to RedTeam and social engineering operations. Support junior team members and engage in knowledge sharing. Key Skills & Experience: 3-5 years' penetration testing experience. Strong understanding of OWASP, SSL/ More ❯
Stratford-upon-avon, Warwickshire, United Kingdom Hybrid / WFH Options
Ccl Solutions Group
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 infrastructure and More ❯
Manchester, North West, United Kingdom Hybrid / WFH Options
Circle Group
months of hands-on penetration testing experience and a strong interest in developing advanced technical skills. This is a rare opportunity to join a highly skilled and diverse security team committed to continuous growth and excellence in the field of offensive security. Key Responsibilities: Conduct hands-on Web Application Penetration Testing Support and contribute to Infrastructure and Cloud Security … Assessments Be mentored and trained towards Adversarial Simulation , RedTeam Operations , and other advanced offensive security techniques Write detailed, clear, and professional reports for technical and non-technical stakeholders Collaborate with a team of skilled professionals and contribute to knowledge sharing Requirements: Minimum 6 months of practical penetration testing experience (freelance, consultancy, or internal testing roles … AWS, Azure) from an offensive perspective Familiarity with tools such as Burp Suite, Nmap, Cobalt Strike, or custom scripts Understanding of MITRE ATT&CK framework or redteam methodologies What You'll Gain: Intensive training across all areas of technical penetration testing Opportunity to work with and learn from a diverse, highly skilled security team Clear More ❯
Milton Keynes, Buckinghamshire, South East, United Kingdom Hybrid / WFH Options
Circle Group
months of hands-on penetration testing experience and a strong interest in developing advanced technical skills. This is a rare opportunity to join a highly skilled and diverse security team committed to continuous growth and excellence in the field of offensive security. Key Responsibilities: Conduct hands-on Web Application Penetration Testing Support and contribute to Infrastructure and Cloud Security … Assessments Be mentored and trained towards Adversarial Simulation , RedTeam Operations , and other advanced offensive security techniques Write detailed, clear, and professional reports for technical and non-technical stakeholders Collaborate with a team of skilled professionals and contribute to knowledge sharing Requirements: Minimum 6 months of practical penetration testing experience (freelance, consultancy, or internal testing roles … AWS, Azure) from an offensive perspective Familiarity with tools such as Burp Suite, Nmap, Cobalt Strike, or custom scripts Understanding of MITRE ATT&CK framework or redteam methodologies What You'll Gain: Intensive training across all areas of technical penetration testing Opportunity to work with and learn from a diverse, highly skilled security team Clear More ❯
to this rapidly growing problem. We've raised $4M from an excellent group of investors, released our first product offering: Mindgard AI Security Labs, and continue to build a team of engineers to join us on our journey. We're seeking a Research Scientist to join our R&D team, who is passionate about working on practical security … adversarial ML attacks and detection techniques. Work and collaborate with the R&D and engineering teams to push/translate adversarial ML techniques into production software for AI red teaming. Uncover ML security threats, analyze data and discover feature commonality. Engage in research collaboration, publications, and conference attendance. Keep the company updated on state-of-the-art research … encourage you to apply as you might just be the candidate we hire. Our people are our strongest asset and the unique skills and perspectives people bring to the team are the driving force of our success. As an equal opportunity employer, we do not discriminate on the basis of any protected attribute. Our commitment is to provide equal More ❯
The Science of Evaluations Team AISI's Science of Evaluations team will conduct applied and foundational research focused on two areas at the core of our mission: (i) measuring existing frontier AI system capabilities and (ii) predicting the capabilities of a system before running an evaluation. Measurement of Capabilities: The goal is to develop and apply rigorous scientific … research which supports one of AISI's core products: conducting tests of frontier AI systems and feeding back results, insights, and recommendations to model developers and policy makers. The team will be an independent voice on the quality of our testing reports and the limitations of our evaluations. You will collaborate closely with researchers and engineers from the workstreams … external experts, partner organizations, and policy makers. Across both focus areas, there will be significant scope to contribute to the overall vision and strategy of the science of evaluations team as an early hire. You'll receive coaching from your manager and mentorship from the research directors at AISI (including Geoffrey Irving and Yarin Gal), and work closely with More ❯
community and the thousands of companies that trust HackerOne with their cybersecurity posture. When you are not leading a project, you are a collaborative and effective software engineer and team member. You will interact with one of the world's most vibrant communities of security researchers and hackers and use this experience to build delightful features and products for … to technical weaknesses they find in their squad's codebases, as well as in shared codebases across the company. At HackerOne, we embrace a Flexible Work approach, enabling our team members to work remotely while maintaining productivity and collaboration. We are seeking candidates located in London and the surrounding metropolitan areas, to facilitate occasional in-person interactions as needed. … While the position is primarily remote, there will be periodic in-person requirements to support team collaboration and foster stronger connections. This approach ensures flexibility while providing opportunities to build meaningful in-person relationships that strengthen our team and company culture. What You Will Do Your day will start with a warm welcome online and get your tools More ❯
s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems. About Anthropic Anthropic's mission is to create … reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems. About the role: You want to build and run elegant and thorough machine … Policy), often in collaboration with other teams including Interpretability, Fine-Tuning, and the Frontier Red Team. Our blog provides an overview of topics that the Alignment Science team is either currently exploring or has previously explored. For the London team, we are opportunistically hiring for the following research areas: AI Control: Creating methods to ensure advanced More ❯
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 redteam 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 teams, or … 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 redteaming and adversary simulation. Skills Required: Solid hands … on experience in penetration testing and redteaming, particularly in operational environments. A background in technical QA - reviewing, validating, and improving the output of other testers. Experience as an assessor or contributor to recognised exam bodies (e.g. CREST, OSCP, GIAC) is highly desirable. Got your attention? If you believe that you have the skills and experience for the More ❯
Cheltenham, Gloucestershire, South West, United Kingdom Hybrid / WFH Options
Yolk Recruitment
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 redteam 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 teams, or … 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 redteaming and adversary simulation. Skills Required: Solid hands … on experience in penetration testing and redteaming, particularly in operational environments. A background in technical QA - reviewing, validating, and improving the output of other testers. Experience as an assessor or contributor to recognised exam bodies (e.g. CREST, OSCP, GIAC) is highly desirable. Got your attention? If you believe that you have the skills and experience for the More ❯
Reading, England, United Kingdom Hybrid / WFH Options
Oracle
for some of Oracle’s most critical customers. Finding and combining bugs to create new attacks is essential in this role. Who We Are We are a world-class team of application security researchers who love new challenges. We are an inclusive and diverse, with a full range of experience and a global reach. We have the resources of … critical software assurance initiative with our cloud and mobile engineering teams. Our mission is to make application security and software assurance a reality, at scale. We’re a dedicated team that leverages each other’s strengths to produce cutting-edge solutions to difficult problems. Join us to grow your career and create the future of software assurance at scale. … Work You’ll Do As a member of our team, you will be responsible for planning and delivering in depth security assessments across a variety of products and services. Your next project could be anything from static and dynamic analysis of a multi-node infrastructure, to writing a fuzzer for an undocumented network protocol or the grammar of a More ❯
researchers, customers, and partners Win Together by fostering empowerment, inclusion, respect, and accountability. Software Engineer II Remote Location: London Position Summary As a Software Engineer on the Enterprise Support team, you will work with Product Managers and Designers on a variety of challenging projects and build features and products for our community and the thousands of companies that trust … to business objectives. You seek out new responsibilities and learning opportunities, and enjoy being part of a collaborative team. At HackerOne, we embrace a Flexible Work approach, enabling our team members to work remotely while maintaining productivity and collaboration. We are seeking candidates located in London , and the surrounding metropolitan areas, to facilitate occasional in-person interactions as needed. … While the position is primarily remote, there will be periodic in-person requirements to support team collaboration and foster stronger connections. This approach ensures flexibility while providing opportunities to build meaningful in-person relationships that strengthen our team and company culture. What You Will Do Your first day will start with a warm welcome and getting your tools More ❯
Lorien are seeking a talented and motivated Penetration Tester to join our clients growing cyber security team on a fully remote basis (mainland UK only). You will be responsible for conducting ethical hacking and security testing engagements to identify vulnerabilities in client systems, applications, and infrastructure. This is an exciting opportunity to work across a range of industries … . Proficiency with industry-standard tools (e.g., Burp Suite, Nmap, Metasploit, Kali Linux). Excellent written and verbal communication skills. OSCP, OSWE, or other relevant certifications. Experience with redteaming or threat simulation exercises. Familiarity with secure coding practices and code review. Scripting experience (e.g., Python, Bash, PowerShell). Exposure to cloud platforms (AWS, Azure, GCP) and associated More ❯
About ZAVA We're on a mission to provide our patients with accessible and dependable healthcare at a fraction of today's cost. Our team of Doctors, Engineers, Customer Support Advisors, Marketers, Product Managers, UX Designers, Pharmacists, and Commercial and Operations Specialists works collaboratively to develop and maintain a digital healthcare platform that suits our patients' needs and schedules. … to be the largest digital primary healthcare platform for people across Europe. About the role We are seeking a motivated and detail-oriented Information Security Engineer to join our team here at ZAVA. In this role, the successful candidate will support the organisation's cybersecurity efforts by assisting with the implementation, monitoring, and maintenance of security systems and processes. … They will work closely with senior security team members to identify vulnerabilities, respond to incidents, and ensure compliance with security policies and frameworks. The role involves hands-on tasks such as configuring security tools, analysing alerts, and supporting investigations into potential threats, as well as contributing to the development ofa secure IT environment. Additionally, the successful candidate will participate 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 (MUFG), one of the world's leading financial groups. Across the globe … be responsible for information/cyber security across MUFG's banking arm and securities business under a dual-hat arrangement. Develop and maintain governance structure of redteam 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 team testing. Identify security risks and vulnerabilities through simulated attacks, and helping the organization understand the potential impact. Manage RedTeam tools and the Security Testing & Validation Platform. Lead and manage a team of security professionals and vendor resources to conduct regular risk More ❯
Reading, England, United Kingdom Hybrid / WFH Options
Oracle
As a member of our technical leadership team, you will be responsible for leading the planning and delivery of in-depth security assessments across a variety of products and services, you will author reports and be the owner from cradle to grave while presenting to executive leadership your findings and taking ownership of your teams work. Your next project … dynamic analysis Create testing tools to help engineering teams identify security-related weaknesses Collaborate with engineering teams to help them triage and fix security issues Mentor members of the team in computer and software security as a role model and team leader Career Level - IC5 What You’ll Bring Bachelor’s or Master’s degree in Computer Science … risks and appropriate levels of urgency to management and engineering staff Excellent organizational, presentation, verbal, and written communication skills as mentioned before you will be the leader of a team and be presenting your findings and reports while authoring large bodies of evidence – strong writing skills are required Nice to Have Experience working in a large cloud or Internet More ❯
that matters to our local business and communities – supporting technical innovation and adoption of cutting-edge solutions across the UK. Working on complex engagements in Identity & Access Management this team is responsible for the delivery of cutting-edge technical solutions and trusted to get it right first time. KPMG is one of the world's largest and most respected … talented testers. In return we will provide some of the UK’s most unique government and commercial engagements for you to cut your teeth on and a friendly, passionate team to develop and grow. The KPMG’s Cyber Defence (CDS) Team conducts client facing technical assurance and penetration testing and has a long and successful history in KPMG. … stage-2) and are members of all current NCSC and CREST testing schemes - as a result we conduct interesting and challenging work that isn’t on offer elsewhere. Our team is made up of skilled individuals at different stages in their careers, centred around three locations in Leeds, Bristol and London, therefore we are able to offer flexibility in More ❯
London, England, United Kingdom Hybrid / WFH Options
ESK Recruitment LTD
that prioritise quality over quantity. Their work covers a wide range of technical areas, including web and API testing, mobile apps, internal networks, cloud environments, and redteam-style simulations, with web application testing currently making up around 80% of their engagements. As their first technical hire, they’re looking for a Penetration Tester with strong manual … testing skills and a passion for high-quality security work. You’ll be instrumental in shaping delivery standards, tooling, internal processes, and the future technical team as the company scales. What You’ll Be Doing: Manual testing of web applications and APIs (custom logic flaws, IDOR, authentication issues, etc.) Infrastructure and cloud security reviews across AWS, Azure, and internal …/external networks Threat modelling, redteam-style assessments, and social engineering for select clients Mobile application testing and internal network assessments (as part of broader project scopes) End-to-end client engagement from scoping and testing through to reporting and debriefing Producing clear, high-signal reports with actionable remediations and relevant risk context You’ll Help More ❯
City of London, London, United Kingdom Hybrid / WFH Options
NextEnergy Group
corporate business systems. A critical dimension of the role will be tight collaboration with: Data Protection Officer (DPO): embedding privacy-by-design, supporting DPIAs and audits Network & Security Engineering team: turning architecture patterns into robust, monitored, and recoverable configurations in production External security advisors & key technology suppliers to align architectural controls with best practice guidance, managed service deliverables, and … communications. When communicating verbally – whether over the phone, on video calls, in person or in meetings – you will need to be articulate, warm and engaging Flexibility - being an effective team player means being flexible in your approach and open to getting involved with new things, even if they are not spelt out in your job description Intellectual Curiosity – we … are looking for someone who is truly interested in our profession and has the intellectual curiosity to delve deep into topics and bring fresh ideas to the team Delivery focus – it may sound obvious, but the ability to proactively churn through work at pace and deliver quality outputs really matters Strong critical thinking and problem-solving skills Passion for More ❯
corporate business systems. A critical dimension of the role will be tight collaboration with: Data Protection Officer (DPO): embedding privacy-by-design, supporting DPIAs and audits Network & Security Engineering team: turning architecture patterns into robust, monitored, and recoverable configurations in production External security advisors & key technology suppliers to align architectural controls with best practice guidance, managed service deliverables, and … communications. When communicating verbally – whether over the phone, on video calls, in person or in meetings – you will need to be articulate, warm and engaging Flexibility - being an effective team player means being flexible in your approach and open to getting involved with new things, even if they are not spelt out in your job description Intellectual Curiosity – we … are looking for someone who is truly interested in our profession and has the intellectual curiosity to delve deep into topics and bring fresh ideas to the team Delivery focus – it may sound obvious, but the ability to proactively churn through work at pace and deliver quality outputs really matters Strong critical thinking and problem-solving skills Passion for More ❯
Newcastle Upon Tyne, England, United Kingdom Hybrid / WFH Options
InfoSec People Ltd
SOC Team Lead Location: Newcastle (Hybrid – 3 days onsite) Salary: £65,000 – £70,000 per annum Clearance: DBS Required Type: Full-time, Permanent I’m working with a well-established UK cyber security business that’s scaling its Security Operations Centre and looking to hire a SOC Team Lead. This is a great opportunity for someone ready to … lead a 24x7 operational team, support complex incidents, and influence both technical capability and team development within a CREST-aligned MDR environment. About the Role As SOC Team Lead, you’ll manage a skilled team of security analysts protecting global organisations from evolving threats. You’ll be responsible for technical escalations, operational planning, and supporting continuous … in place for round-the-clock response Mentor and guide analysts through regular 1:1s, performance reviews, and career planning Champion collaboration across threat detection, DFIR, redteam, and engineering teams Collaborate with vendors and partners to ensure tooling and integrations remain effective Track and report on performance metrics and recommend areas for improvement Contribute to technical More ❯
Exeter, Devon, United Kingdom Hybrid / WFH Options
Met Office
making We'rebettertogether-understandingpartnerships and inclusivity make usgreater We keep evolving - pushing boundaries to make tomorrow better for ourcustomers Your world ofexpertise As theVulnerability Management Managerwithin the Security Operations team of the Met Office's Cyber Security Department you will be responsible for driving the vision and operational execution of the organisation's vulnerability management program, overseeing the end … to-end process of identifying, assessing, and recommending mitigations to vulnerabilities across digital services, including complex and mission-critical systems at the Met Office. Team Leadership and Development:Lead, manage and mentor a team to ensure the team operate effectively. Develop the team utilising the career framework to identify learning needs and career pathways. Vulnerability Management … years andoptionto buy or sell up to 5 days per year of annualleave Essential Criteria,skillsand experience: We live and breathe it -Demonstrated ability to lead and manage a team with integrity and genuine passion for our purpose, fostering an inclusive, collaborative culture, and continuously developing team skills and expertise through learning and knowledge sharing. We keep evolving More ❯
Altrincham, England, United Kingdom Hybrid / WFH Options
Heywood
and work directly with internal teams and external parties on containment and mitigation activities, as well as preparing for incidents by running threat simulations, tabletop and redteam exercises Assess emerging and potential security threats using the Cyber Risk Management Framework and act proactively to mitigate relevant threats End-to-end vulnerability management across the hybrid cloud More ❯