51 to 75 of 104 Offensive Security Jobs in England

UKRI, located in Swindon with hybrid working options between Polaris House, Swindon and Harwell, seeks an Information Security specialist to lead offensive security and penetration testing initiatives. The role offers exposure to cutting-edge security challenges within a leading scientific research environment. You will perform targeted … tests, develop offensive tooling, analyse threat intelligence, and produce actionable reports to strengthen security across UKRI assets and facilities. #J-18808-Ljbffr ...

tough problems to keep the Internet moving forward, you’ll fit right in. Available Locations: Austin (US), London (UK) Role Summary As a Product Security Engineer, you will support security assessments and vulnerability operations for Cloudflare’s core software products. In this role, you will analyze system architecture … threat model new features, and ensure that product-related security findings are accurately triaged, routed to the correct engineering owners, and mitigated within our SLAs. On any given day, you might conduct a deep-dive security review on a new feature design, triage a complex bug bounty submission ...

products and infrastructure. Your primary responsibility will be to deal with privacy vulnerabilities by designing and guiding Software Engineers through remediations, learning from security/privacy incidents, and identifying vulnerabilities across our codebase at scale. Your skills will be the foundation of security initiatives that protect the security … connected by identifying and neutralizing threats that aim to collect sensitive information or disrupt our systems. 2+ years work experience in technical privacy, security, or security software engineering domains, including incident response, application privacy/security, and/or offensive security Experience identifying, analyzing ...

Atari is seeking a Senior Offensive Security Engineer to evaluate and strengthen the security posture of IT infrastructure, applications, and networks. You will lead vulnerability assessments and hands‐on penetration testing, collaborating with cross‐functional teams to improve security controls and incident response readiness. The role … requires 3+ years in VAPT or related security fields, with familiarity in IoT/OT security and relevant certifications preferred. #J-18808-Ljbffr ...

technology. Salary: Up to £45,000 per annum. Travel: Hybrid Location: London We're hiring a passionate Penetration Tester eager to grow in offensive security. Join a skilled, diverse team committed to innovation and technical excellence. This is a great opportunity to sharpen your expertise and contribute to impactful … cybersecurity initiatives. Support and contribute to Infrastructure and Cloud Security Assessments Be mentored and trained towards Adversarial Simulation, Red Team 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 ...

which involves spending at least two days per week, or 40% of our time, at one of our office sitesAbout this opportunityWithin the Chief Security Office (CSO) our role is to protect the Group and our customers from security threats, and to enable the Group's businesses … scale and speed.As a Senior DevOps/Platform Engineer, you will build and operate the infrastructure that the harness runs on. Autonomous agents executing offensive security workloads demand an unusually high bar: strong isolation, tightly controlled egress, hardened runtimes, and complete evidential traceability. You will design that platform ...

which involves spending at least two days per week, or 40% of our time, at one of our office sitesAbout this opportunityWithin the Chief Security Office (CSO) our role is to protect the Group and our customers from security threats, and to enable the Group's businesses … scale and speed.As a Senior DevOps/Platform Engineer, you will build and operate the infrastructure that the harness runs on. Autonomous agents executing offensive security workloads demand an unusually high bar: strong isolation, tightly controlled egress, hardened runtimes, and complete evidential traceability. You will design that platform ...

United States Digital Space LLC is seeking a Senior Offensive Security Engineer to assess and strengthen security across IT infrastructure, applications, and networks. You will identify vulnerabilities, perform hands-on penetration testing, and collaborate with cross-functional teams to implement robust security controls. The role requires ...

looking for a Cyber Threat & Vulnerability Analyst to join our Cyber Security team, helping protect the systems that deliver essential water services to millions of customers every day. You'll play a key role in identifying, assessing, and reducing cyber risk across a large and complex technology estate, making … identify, assess, and manage cyber vulnerabilities across the organisation. You’ll help shape how we reduce cyber risk and strengthen our overall security posture. Support end-to-end vulnerability management across IT and operational technology environments Help shape and improve threat and vulnerability management processes, frameworks, and ways ...

fundamental bet is working. We have paying enterprise customers, real revenue and strong early demand for what we're building. We're building autonomous offensive-security agents that find and prove vulnerabilities in real customer environments. They're already uncovering critical vulnerabilities in systems built and operated … turns it into a world-class product and platform. As a Founding Software Engineer, you'll work across the stack to build the product security teams use every day — from polished, intuitive interfaces through to the APIs, data models and systems behind them. This isn't a role where ...

help shape Pen Test delivery and QA strategy, challenge approaches, and improve consistency of outcomes across vendors and stakeholder groups. An applicant from a security consulting firm or a financial services background will have a distinct advantage. Job Responsibilities The role’s responsibilities include Own vendor management for penetration … style risk/issue tracking) with the ability to produce crisp, executive-ready status reporting. Strong understanding of penetration testing delivery models and the offensive security space (not hands-on execution, but able to challenge, translate, and steer), including the ability to identify gaps in methodology, inconsistent severity ...

help shape Pen Test delivery and QA strategy, challenge approaches, and improve consistency of outcomes across vendors and stakeholder groups. An applicant from a security consulting firm or a financial services background will have a distinct advantage. Job Responsibilities The role's responsibilities include Own vendor management for penetration … style risk/issue tracking) with the ability to produce crisp, executive-ready status reporting. Strong understanding of penetration testing delivery models and the offensive security space (not hands-on execution, but able to challenge, translate, and steer), including the ability to identify gaps in methodology, inconsistent severity ...

with clients to scope objectives and threat scenarios, then plan and execute realistic operations within agreed rules of engagement. The role combines hands-on offensive security with research, problem solving and operational tradecraft. You'll build and manage red team infrastructure, develop custom tooling, research emerging TTPs … colleagues remotely but must be commutable to London every 2-3 weeks. About you: You have strong experience in a similar Red Team/Offensive Security role and keep up to date with emerging adversary tradecraft, tooling and TTPs relevant to red team operations You have advanced problem ...

WatchTowr Pte. Ltd. is looking for a candidate who thrives at the intersection of offensive security, AI, and experimentation. In this role, you will build innovative tooling that enhances security workflows while integrating directly into the watchTowr Platform, helping protect major enterprises from vulnerabilities. Your curiosity … high-energy mindset will be key in exploring advanced AI applications for security, working autonomously in a fast-paced, dynamic environment. Join a growing company and make significant contributions. #J-18808-Ljbffr ...

often treated as queue work: read the report, check the scope, set a severity, move it on. We are building this role differently. As Security Triage Analyst you own the first layer of judgement on every report that reaches Verda – what is real, what matters, what needs more evidence … report that looks routine elsewhere can matter more here because of tenant isolation, customer impact, or infrastructure access. You will work closely with Security, Engineering, Infrastructure, external triage partners, and researchers, and you will help improve how vulnerability handling works as the volume grows. Your responsibilities Review incoming reports ...

Continuous Threat Exposure Management (CTEM). The HackerOne Platform unites agentic AI solutions with the ingenuity of the world’s largest community of security researchers to continuously discover, validate, prioritize, and remediate exposures across code, cloud, and AI systems. Through solutions like bug bounty, vulnerability disclosure, agentic pentesting … teaming, and code security, HackerOne delivers measurable, continuous reduction of cyber risk for enterprises. Industry leaders, including Anthropic, Crypto.com, General Motors, Goldman Sachs, Lufthansa, Uber, UK Ministry of Defence, and the U.S. Department of Defense, trust HackerOne to safeguard their digital ecosystems. HackerOne was recognized in Gartner’s Emerging ...

strengthening our global presence, and building strong client relationships. No career pathway in your current role? You won’t stand still in our Cyber Security team which is a part of our wider Technology & Cyber Risk Assurance team. You’ll work with our team of specialists … spot inefficiencies in everyday life and are passionate about making improvements, this role is perfect for you! Relevant experience within a technology risk, information security or cyber security role. Significant experience delivering cyber security assurance and advisory services. Proven experience in managing engagements ...

looking for a Application Security Engineer to join our Manchester-based application security business as a member of the AppSec Engineering team (Open to people who can make it to our office twice a month or remote) Cytix is a platform that threat models development tickets and creates … security testing plans that include both manual and automated testing. In this role, you won't be confined to traditional 4+1 web applications. We're breaking away from the constraints of CHECK or CE+ standards, and we're not interested in producing lengthy PDF reports. Instead, our focus ...

Lead investigations into escalated security events and incidents, developing hypotheses, collecting evidence and determining root cause and impact. Build and optimise detection rules, queries and monitoring logic across cloud, endpoint, network and application environments. Develop tooling and automation to improve security telemetry, alert enrichment, investigation workflows and response … times. Conduct threat hunting using adversary behaviours, TTPs and frameworks such as MITRE ATT&CK, incorporating findings into security controls and detections. Create and continuously improve incident runbooks, playbooks and detection processes based on findings from real-world investigations. Work with the external SOC and internal engineering teams ...

Klarna seeks an experienced offensive mobile security specialist to protect its iOS and Android apps. You will conduct pentests and red-team exercises, reverse-engineer binaries, and apply MASVS/MASTG guidance to drive concrete engineering fixes. You will collaborate with software engineers to harden app security, test RASP protections, and document actionable remediation steps. This role requires hands-on testing across mobile platforms and a track record of security research or bug bounty work. #J-18808-Ljbffr ...

ReliaQuest, we do things differently. We do not limit your professional growth with outdated job titles and responsibilities. Why be just a “Security Analyst”, “Detection Developer”, or “Security Engineer” when you can be all three? As a GreyMatter Specialist, you will do all of that and more. This … this role, you’ll develop a diverse skill set which normally takes years to learn—all within your first year. Our industry-leading security operations platform, GreyMatter and immersive training will afford you the tools, experience, and opportunities to grow your career. Whether you’re conducting advanced investigations, troubleshooting ...

Security Consultant (Penetration Testing) Location: Hybrid (UK) Salary: Competitive + Benefits Security Clearance: Current SC preferred About Citation Cyber Citation Cyber is one of the UK's leading cyber security consultancies, delivering penetration testing, Cyber Essentials certification, consultancy, training and managed cyber security services to organisations … NCSC CHECK provider and CREST member company , we're continuing to grow our penetration testing team and are looking for a talented Security Consultant to join us. Whether you're already a CHECK Team Member (CTM) or you're an experienced penetration tester ready to take that next step ...

Security Consultant (Penetration Testing) Location: Hybrid (UK) Salary: Competitive + Benefits Security Clearance: Current SC preferred About Citation Cyber Citation Cyber is one of the UK's leading cyber security consultancies, delivering penetration testing, Cyber Essentials certification, consultancy, training and managed cyber security services to organisations … NCSC CHECK provider and CREST member company , we're continuing to grow our penetration testing team and are looking for a talented Security Consultant to join us. Whether you're already a CHECK Team Member (CTM) or you're an experienced penetration tester ready to take that next step ...

Security Consultant (Penetration Testing) Location: Hybrid (UK) Salary: Competitive + Benefits Security Clearance: Current SC preferred About Citation Cyber Citation Cyber is one of the UK's leading cyber security consultancies, delivering penetration testing, Cyber Essentials certification, consultancy, training and managed cyber security services to organisations … NCSC CHECK provider and CREST member company , we're continuing to grow our penetration testing team and are looking for a talented Security Consultant to join us. Whether you're already a CHECK Team Member (CTM) or you're an experienced penetration tester ready to take that next step ...

Security Consultant (Penetration Testing) Location: Hybrid (UK) Salary: Competitive + Benefits Security Clearance: Current SC preferred About Citation Cyber Citation Cyber is one of the UK's leading cyber security consultancies, delivering penetration testing, Cyber Essentials certification, consultancy, training and managed cyber security services to organisations … NCSC CHECK provider and CREST member company , we're continuing to grow our penetration testing team and are looking for a talented Security Consultant to join us. Whether you're already a CHECK Team Member (CTM) or you're an experienced penetration tester ready to take that next step ...