1 to 25 of 57 Permanent Offensive Security Jobs in London

Penetration Tester

Location
Greater London, England, United Kingdom
talent, and providing exciting career opportunities that help our people grow. For more information, visit WPP.com. Department: Data & Technology Solutions (DTS) Reports To: SVP Security and Compliance Location: [London/Hybrid 2 days a week in office] Position Type: Full-Time Role Overview The Product, Application and Offensive Security Engineer is responsible for embedding security directly into the design, development, testing, and operation of DTS products and platforms. This is a hands-on security engineering role. The role requires someone who can work directly with product and engineering teams, review designs, assess APIs ...

AI Vulnerability Research Engineer

Location
Greater London, England, United Kingdom
what’s the role? We’re looking for someone who sits at the intersection of offensive security, AI, and relentless experimentation. You’ll build production-quality tooling and push the boundaries of how LLMs can accelerate offensive security workflows - from vulnerability discovery and analysis through … directly into the watchTowr Platform, powering the systems that identify, reproduce, and mitigate vulnerabilities across our client base before attackers weaponise them. You understand offensive security and vulnerability research, but you don't need to be a career vulnerability researcher. What matters is that you're fascinated ...

Security Engineer (Product Security)

Hiring Organisation
Searchability
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £90,000 per annum
Security Engineer (Product Security) Salary: £80,000 - £90,000 + Excellent Benefits Location: London (Remote-first with occasional travel to the office) Employment: Full Time, Permanent This is an opportunity to join a high-growth, PE-backed cybersecurity software company where security isn't simply a support … organisations worldwide, the business develops market-leading technology that protects organisations from advanced file-based cyber threats. We're looking for a hands-on Security Engineer who enjoys getting into the detail of vulnerabilities, understanding how applications behave and working directly with developers to make software more secure. This ...

Regional Cyber Security Advisor, Vice President

Location
Greater London, England, United Kingdom
Looking For We are looking for a Vice President of Cyber Security reporting to the Regional CISO, UK & Ireland. You will act as a senior cyber advisor embedded in the region, partnering closely with business, technology, risk, and compliance teams to ensure cyber security priorities are shaped around … regional business needs, regulatory obligations, and client commitments, while still drawing on strong technical expertise to identify practical security improvements and drive change that strengthens cyber resilience. The successful candidate will bring strong business acumen and stakeholder judgement, underpinned by solid technical credibility across offensive security, cyber ...

AI Security Engineer

Location
Greater London, England, United Kingdom
mission, values, and purpose align with your own, we would love to hear from you! Your opportunity This is a hands-on security engineering role for people who are deep in cybersecurity and serious about AI. You will secure the AI systems we are building — AI-enabled applications, models … agents, and the platforms beneath them, across their full lifecycle — acting as a trusted advisor who helps define and evolve the firm’s AI security standards, patterns, and guardrails. The objective is not to create additional process, but to ensure our existing security capabilities evolve alongside AI adoption ...

Engineering Lead, Cyber Engineering

Location
Greater London, England, United Kingdom
Engineering Lead for our Cyber Engineering Squad to join us as a "player‐coach" with the technical expertise to dive deep into complex security and engineering challenges while coaching and leading a growing team. This is an exciting opportunity to architect, build and scale our offensive security … line manager for the engineers, including performance reviews, career development, and day‐to‐day coaching. You will design, develop, and maintain the offensive security infrastructure that powers the watchTowr Platform, ensuring it can process vast amounts of data and identify vulnerabilities in enterprise systems at scale. You will ...

Senior Offensive Security Engineer

Location
Greater London, England, United Kingdom
which ones matter, why, and what else might be affected by the same root cause. That's this position. You'll sit on the Offensive Security team, running your own penetration tests against Klarna's internal and public-facing systems while also triaging what comes in from … perform variant analysis on issues surfaced through any channel, tracing where else the same class of bug might exist. You research and assess the security of Klarna's third-party solutions and integrations. You build tooling for reconnaissance, automation, and metrics collection. You guide developers, product security teams ...

Application Security Specialist

Location
Greater London, England, United Kingdom
Application Security Specialist Shape the Future of Secure Software Development Across a Leading Enterprise Organisation Competitive Salary + Bonus + Car Allowance + Benefits | London | Hybrid Working Join a growing Cyber, Risk & Security team and play a pivotal role in strengthening the security of products, platforms … services delivered across a complex European technology environment. As an Application Security Specialist, you'll be a key member of the Secure Development Centre of Excellence (CoE), partnering with engineering teams to embed security throughout the software development lifecycle. You'll drive a security-first culture, influence ...

Senior Consultant – Offensive Cyber Security

Location
Greater London, England, United Kingdom
team of expert consultants, embracing a digital-first approach, strengthening our global presence, and building strong client relationships. We are seeking an enthusiastic Cyber Security Consultant to join our team. Working alongside our experienced team of specialists, you’ll be delivering offensive security services including digital footprint … engineering, penetration testing and vulnerability assessments and more to high profile clients across all industries. The purpose of this role is to deliver our offensive security services including digital footprint reconnaissance, social engineering, vulnerability assessments, penetration testing, threat modelling, cyber-attack simulation exercises, and more to high profile ...

Senior Software Engineer

Location
Greater London, England, United Kingdom
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 Senior Engineer, you'll have an unusually broad mandate: building the product security teams work in, evolving the distributed platform our agents run on, and helping establish how engineering at CodeWall works. There is plenty already here ...

Security Platform Engineer, Google Cloud Public Sector

Location
City of Westminster, England, United Kingdom
Security Platform Engineer, Red Team, UK Security Operations X Must be a British citizen to meet compliance and security clearance requirements. Office location can either be a satellite site in Wiltshire, or London. This is an on-site position, requiring a standard five day per week schedule … office Bachelor's degree in Computer Science, Information Security, a related field, or equivalent practical experience. 5 years of experience in security engineering, offensive security (Red Team/Purple Team), or platform engineering roles. Experience with infrastructure-as-code and GitOps (e.g., Terraform, Helm, ArgoCD ...

VP of Security & Infrastructure

Location
Greater London, England, United Kingdom
next generation of digital health – AI-powered, privacy-first, clinically backed – to help our users know their body better. The job This role unites Security and Infrastructure under a single organizational mandate to ensure security practices align directly with rapid engineering execution and platform scalability.Flo Health protects … over 80 million monthly active users, holding ISO 27001 and ISO 27701 certifications alongside privacy-first features such as Anonymous Mode. The VP of Security & Infrastructure is accountable for maintaining and elevating these security, privacy, and architectural standards across the organization. We are building organisation where secure ...

Senior Application Security Engineer

Hiring Organisation
TripleLift
Location
London, United Kingdom
Salary
£ 70 K
qualify for diverse spending goals and are committed to economic inclusion. Find out how TripleLift raises up the programmatic ecosystem at triplelift.com.OverviewThe Senior Application Security Engineer plays a critical role in driving secure software development and application security maturity within TripleLift's Engineering and Security organization, directly … platforms and the trust our publishers and advertisers place in us. In this position, you will partner closely with Engineering, Platform, Cloud Infrastructure, and Security teams to shape secure coding practices, application security tooling, vulnerability remediation, and CI/CD security, ensuring security is embedded into ...

Security Platform Engineer, Google Cloud Public Sector

Location
London, United Kingdom
part of the UK Security Operations (SecOps) team in Google Public Sector, you will deliver, operate and secure private cloud services. Your aim is to provide the flexibility, reliability, and scalability of public cloud for customers with exceptionally high security requirements that can only … with Google product teams to continually improve our technology. In this engineering-centric role, you will require deep technical expertise in cloud environments, Kubernetes security, and platform automation. You will work closely with Incident Response, Platform Engineering and Security Architects to ensure that security validation and defensive ...

Security Platform Engineer

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
client is a global technology company. As a part of the UK Security Operations (SecOps) team in our Public Sector, you will deliver, operate and secure private cloud services. Your aim is to provide the flexibility, reliability, and scalability of public cloud for customers with exceptionally high security … client product teams to continually improve our technology. In this engineering-centric role, you will require deep technical expertise in cloud environments, Kubernetes security, and platform automation. You will work closely with Incident Response, Platform Engineering and Security Architects to ensure that security validation and defensive hardening ...

Security Engineer

Location
City of Westminster, England, United Kingdom
Meta's Security Engineering team is seeking a Security Engineer to help protect billions of users and Meta's global infrastructure from evolving threats. In this role, you will conduct security assessments, vulnerability research, and threat modeling across Meta's products and systems — spanning mobile applications … platforms, backend services, and internal infrastructure. You will identify systemic security gaps, drive mitigations at scale, and partner with engineering teams to embed security best practices into the software development lifecycle. Your work will directly reduce risk for Meta and its users by turning one-off security ...

Senior Ethical Hacker

Hiring Organisation
Stantec
Location
London, United Kingdom
Salary
Confidential
where everyone can thrive. Through teamwork and collaboration, we’re building a stronger, more resilient Stantec every day.Your OpportunityThe Senior Ethical Hacker will conduct security assessments on web applications and cloud services by emulating real-world attacks using the Mitre Attack Framework. Their goal is to identify security weaknesses, help prevent data breaches and enhance the security posture by uncovering vulnerabilities, misconfigurations, and risks proactively before they are discovered by threat actors.Your Key ResponsibilitiesCommunicationCollaborate with cross-functional teams (security, engineering, cloud and network operations).Create reports and communicate findings to various technical teams, architects ...

Application Security Consultant

Hiring Organisation
Ricoh
Location
London, United Kingdom
Employment Type
Permanent
heard, your development is supported, and your work feels meaningful, you will feel at home at Ricoh. We're looking for an Application Security Consultant to join our Cyber, Risk & Security team and play a key role in strengthening application security across Ricoh Europe. This … opportunity to work at the intersection of software engineering, cybersecurity and risk , helping our teams adopt a genuine shift-left approach and making security part of the development lifecycle from design through to deployment. You'll work across both our internal IT environment and customer-facing products and services ...

Senior Sales Engineer

Location
Greater London, England, United Kingdom
Role As our first Sales Engineer in the UK, you'll be the technical force behind enterprise security sales. You'll partner with Account Executives to win complex deals, lead deep technical discovery, and demonstrate how Artemis solves real security problems for SOC analysts, security engineers … CISOs. You'll architect proofs-of-value, navigate procurement and security reviews, and serve as the trusted technical advisor from first call through close. This is also an opportunity to shape how we build our technical go-to-market practice in the UK market—you'll help establish playbooks ...

Cyber Engineering Lead: Offensive Security

Location
Greater London, England, United Kingdom
WatchTowr Pte. Ltd. is seeking an Engineering Lead for its Cyber Engineering Squad. This role involves leading a team in tackling complex security challenges while providing mentorship and guidance. You will architect and enhance our offensive security capabilities, working closely with teams across the UK and Singapore. … Ideal candidates will have a proven track record in leading engineering teams, building offensive security solutions, and a strong expertise in programming languages like Python and Go. This is a dynamic opportunity to contribute actively to a fast-growing cybersecurity organization. #J-18808-Ljbffr ...

Senior Offensive Security Engineer: Lead Pen Tests & Cloud

Location
Greater London, England, United Kingdom
Klarna is seeking an experienced Offensive Security Engineer to perform penetration testing across internal and public-facing systems. You will triage Bug Bounty submissions, analyze variants, and assess third-party integrations within Klarna's AWS microservice stack. You will build tooling and provide hands-on guidance to developers … teams. You will bring strong coding insight for Java and Node.js, and you’ll participate in training and workshops to spread offensive security practices #J-18808-Ljbffr ...

Web Security Engineer JavaScript

Hiring Organisation
Client Server
Location
London, United Kingdom
Salary
£ 70 K
Security Engineer (JavaScript/TypeScript) London/Remote to 80kDo you have expertise with web security combined with strong JavaScript/TypeScript coding skills You could be progressing your career at a global leader in Computer Vision, AI and biometric identity, whose technology protects governments, critical infrastructure … some of the world's largest enterprises against identity fraud, deepfakes and sophisticated cyber threats.As a Web Security Engineer you'll collaborate closely with the web development team to ensure security is at the centre of all web based applications. Joining a specialist security team ...

security engineer for social technology

Location
Greater London, England, United Kingdom
experiences to advance social technology. Instagram и Facebook принадлежат компании Meta Platforms Inc., деятельность которой признана экстремистской и запрещена на территории РФ Задачи: Conduct security assessments, penetration testing, and vulnerability research across web, mobile, and backend systems to identify and remediate risks Perform threat modeling and security architecture … reviews for products and infrastructure Identify systemic security gaps and drive scalable, cross-functional mitigations Develop and improve security tooling, automation, and detection capabilities Collaborate with product and infrastructure engineering teams to define security requirements and integrate security controls into the software development lifecycle Lead complex ...

Mobile Application Senior Security Engineer London, Milan, Stockholm +1 more £91,196 GBP - £116,438 GBP

Location
Greater London, England, United Kingdom
sandboxing, permission models, anti-tampering - and someone has to attack them before someone else does. That's you. You’ll work as an offensive security specialist focused entirely on Klarna's mobile surface. You’ll run penetration tests and red-team exercises against the apps, reverse-engineer builds … find what static review misses, and use the OWASP Mobile Application Security Verification Standard (MASVS) and Testing Guide (MASTG) as your working framework rather than a checklist you fill in after the fact. You’ll work closely with the engineering teams who build and harden the apps, turning what ...

Product Security Engineer: Offensive & AI Testing

Location
Greater London, England, United Kingdom
seeking a Product, Application and Offensive Security Engineer to embed security into the design, development, testing, and operation of DTS products and platforms. You will work with product and engineering teams to review designs, assess APIs, run threat models, test systems, and remediate issues. You will lead … secure SDLC efforts, perform threat modelling, and conduct offensive security testing across APIs, data products, and integrations, including AI-enabled capabilities. #J-18808-Ljbffr ...