Top Cyber Security Jobs in London

Respond to and investigate security incidents, manage threat and vulnerability programs, operate SIEM and EDR tooling, develop incident response runbooks, automate security workflows, lead phishing and security awareness campaigns, and support purple team exercises. The role also owns vulnerability reporting, remediation metrics, stakeholder communication, and continuous improvement of security operations.

Own enterprise sales across the UK and Ireland, generating new business, managing the full sales cycle, engaging C-level and technical stakeholders, leading proofs of value, negotiating contracts, and closing multi-year partnerships. The role involves territory planning, channel and AWS ecosystem collaboration, accurate forecasting, Salesforce discipline, and selling cloud security solutions to mid-large enterprises.

Manage strategic customer relationships after sale, lead technical onboarding and cloud deployments, support feature adoption, address issues, gather feedback, guide roadmap discussions, and partner with sales on renewals and expansions. Advocate for customer needs across Product Management and Technical Support while ensuring customers achieve measurable value from the Upwind cloud security platform.

Provides second- and third-line security event analysis, incident response, SOC support, alert and monitoring oversight, phishing campaign management, and security tooling maintenance. Coordinates with third-party security vendors, analyzes cyberattack trends, supports incident response as a technical SME, reviews information systems and infrastructure, and promotes secure behaviors across the business. Requires experience with SOC operations, detection engineering, SIEM, IAM, DLP, Azure, Microsoft 365, Zero Trust, and MITRE ATT&CK.

Analyze reinsurer security and market conditions to support brokers and clients. Produce analytical reports, newsletters, and research notes, maintain market security platform, respond to stakeholder queries, present findings, and manage large financial datasets while building relationships with brokers, insurers, and clients.

Supports sales engagements by providing technical consultation, gathering customer requirements, designing solutions, and preparing presentations, demonstrations, proposals, quotations, and tender documentation. Collaborates with engineering, product, and operations teams on solution feasibility, product modifications, compliance, and continuous improvement. Builds customer relationships while translating business needs into effective technical solutions.

Own the technical strategy and customer journey for a portfolio of education institutions adopting OpenAI solutions. Lead discovery, architecture design, technical evaluations, prototypes, adoption roadmaps, governance, deployment readiness, and value realization. Build relationships with executive, academic, research, and technical stakeholders while coordinating specialist teams. Translate education needs into responsible AI use cases and reusable architectures, track adoption and customer impact, and provide feedback to Product, Engineering, and Research.

Leads a security engineering team responsible for defining and delivering the security roadmap, designing secure cloud services and platforms, and implementing security tooling. The role combines people management, technical leadership, roadmap and product strategy contributions, design reviews, code reviews, hands-on engineering, recruitment, process improvement, and engineer development. Candidates need experience managing product-aligned engineering teams and securing modern cloud-native technology stacks.

Lead the implementation and continuous improvement of enterprise Data Loss Prevention capabilities. Configure and optimize Netskope, Microsoft Purview, Wiz, and Kiteworks; manage data discovery, classification, labelling, secure file sharing, and DLP alerts. Investigate incidents, produce audit reporting, maintain security standards, and partner with cybersecurity, legal, compliance, privacy, and technology teams. Support automation, vendor management, regulatory compliance, and broader data security improvements.

Monitor, detect, and respond to cybersecurity incidents in partnership with an MSSP. Govern Microsoft and third-party security configurations, manage detection rules and alerts, oversee MSSP performance, improve SecOps processes through automation, and maintain incident-response runbooks and knowledge bases. The role requires strong networking and security fundamentals, hands-on experience with SIEM and related security technologies, Microsoft security expertise, and effective cross-functional communication.

Conduct advanced application security research across GitLab’s DevSecOps and AI-powered platforms. Identify and exploit novel, systemic, and chained vulnerabilities; develop proof-of-concept exploits, testing methodologies, and research automation; assess AI attack vectors and open-source dependencies; drive remediation and security improvements; advise engineering teams, contribute to roadmaps, mentor researchers, and share findings with the security community.

Conducts advanced application security research across GitLab’s DevSecOps and AI-powered platforms. Responsibilities include discovering and exploiting systemic vulnerabilities, penetration testing, developing proof-of-concept exploits, researching AI and agentic security threats, building automated research tooling, coordinating remediation, mentoring security professionals, and communicating findings to engineering and security communities.

Design and govern the end-to-end architecture of Era4’s Kubernetes-based AI infrastructure. The role develops platform blueprints, technical standards, high- and low-level designs, multi-tenant GPU cloud architectures, capacity plans, and technology roadmaps. It coordinates Kubernetes, GPU, networking, storage, automation, security, observability, billing, and cloud services while guiding platform engineering and operations teams toward secure, scalable, reliable, and commercially viable solutions.

Lead Samsara’s vulnerability management and application security programs across cloud, firmware, IoT, and corporate systems. Define technical strategy, automate vulnerability detection and response, reduce remediation time, guide engineering teams, mentor security engineers, investigate critical vulnerabilities, and support incident response. The role requires strong AWS, programming, vulnerability management, application security testing, AI/LLM, and security automation expertise.

Build and lead application security for WRITER’s enterprise AI platform. Responsibilities include threat modeling, secure architecture reviews, SAST/DAST and CI/CD security automation, code reviews, secure coding standards, penetration testing, vulnerability remediation, and protection of AI agents, data pipelines, and model training environments. The role also researches emerging LLM security threats and partners with engineering teams to embed scalable security controls.

Lead the strategy and hands-on delivery of product security across cloud platforms, applications, code, and CI/CD pipelines. Build and operate security tooling, secure software supply chains, develop policy-as-code controls, lead threat modeling, and create reusable secure-by-default patterns. Diagnose vulnerabilities, improve remediation, measure control effectiveness, and establish safeguards for AI-assisted and agentic engineering workflows. Serve as a principal technical authority while advising stakeholders and coaching engineering teams.

Provides hands-on information security support within a regulated insurance environment, including third-party risk assessments, supplier due diligence, security operations, incident response, threat intelligence, control validation, audit evidence, regulatory requests, and remediation tracking. The consultant advises business stakeholders, maintains risk documentation, and works independently within a client’s information security governance structure.

The Security Engineer designs, administers, and improves cybersecurity capabilities, primarily focused on identity protection and privileged access management. Responsibilities include PAM administration, privileged account lifecycle management, credential rotation, secrets and certificate management, access governance, threat detection, automation, incident response, security control monitoring, audit reporting, and collaboration on system hardening and security platform improvements.

Design, implement, and improve security controls across Kubernetes, cloud-native, and datacentre infrastructure. Secure networks and firewalls, integrate DevSecOps controls into CI/CD, lead vulnerability management, build detection/response capabilities, automate security workflows, and support incident response and threat hunting for GPU-accelerated and AI/ML platforms.

Own the UK&I SMB and startup segment, generating pipeline and closing new business through full sales cycles. Build territory plans, prospect outbound and via partners, engage founders and technical leaders, run evaluations with Solutions Engineering, negotiate agreements, forecast accurately in Salesforce, and identify expansion opportunities. The role requires high-volume pipeline management, quota attainment, cloud or cybersecurity sales knowledge, and disciplined qualification.

Monitor and respond to global security incidents, lead incident response lifecycles, conduct threat hunting, manage threat intelligence workflows, and maintain SIEM, EDR, SOAR, alerts, playbooks, and escalation processes. The role participates in on-call rotations, coordinates stakeholders, and drives continuous improvement across preparation, detection, containment, and post-incident activities.

Leads a multi-layered engineering organization supporting Manufacturing products. Defines engineering strategy, oversees delivery and architecture, develops engineering leaders, and drives cloud-native, DevOps, quality, security, and AI adoption. Partners with Product, Architecture, and Manufacturing leaders to align technology with business and customer outcomes. Provides strategic leadership for configurable, multi-tenant manufacturing software and may work directly with customers at manufacturing locations.

Lead technical response to security events across Twilio's global cloud infrastructure: triage, contain, remediate, document incidents, build runbooks and automations, drive post-incident improvements, participate in on-call rotation and RCAs, and collaborate with R&D to scale threat mitigation and incident response capabilities.

Lead mobile security architecture, penetration testing, threat modeling, security assessments, and secure solution delivery across Android and iOS platforms. Define technical strategies, identify risks, recommend mitigations, advise clients, and drive security quality and compliance. Collaborate across full-stack mobile teams, improve security practices and tooling, and support Agile delivery. The role also involves mobile security research, reverse engineering, cryptographic controls, and DevSecOps practices.

Patrols university campuses on foot and by vehicle, assists with control-room operations, responds to fire and intruder alarms, and provides immediate support during incidents or crimes. The role includes welfare support, signposting to agencies, and reassuring staff and students. Candidates need strong communication and listening skills, computer literacy, composure under pressure, attention to detail, and a full driving licence.