Top Cyber Security Jobs in London

Lead and manage a cross-functional engineering team to design, build, and operate production systems. Own technical architecture, delivery, reliability, and processes. Coach engineers, run reviews, resolve incidents, and drive product outcomes while balancing speed, scalability, and quality.

Lead Altana’s Policy & National Security public-sector business globally. Own revenue growth, sales pipeline, forecasting, agency relationships, partner strategy, and complex government pursuits. Shape opportunities with senior stakeholders, guide contracting strategies, coordinate cross-functional teams, and translate policy, budget, and agency signals into product and company strategy. The role requires deep public-sector sales leadership, government procurement expertise, strong networks, and eligibility to obtain and hold a U.S. security clearance.

Leads the architecture and delivery of GitLab’s static analysis engine and evaluation tooling. Owns program modeling, vulnerability detection quality, SAST rules, AI-assisted development guardrails, and benchmark validation. Sets technical direction, mentors engineers, coordinates complex initiatives, contributes to research and open source, and participates in on-call rotations. The role requires deep program analysis, application security, systems programming, performance optimization, containerized CI/CD, and experience building trustworthy LLM tooling.

Lead end-to-end delivery of complex cybersecurity initiatives across financial and energy institutions. Responsibilities include defining project scope and plans, coordinating security and technology workstreams, managing governance, RAID logs, budgets, resources, risks, dependencies, and stakeholder reporting. The role covers IAM, cloud security, endpoint protection, SIEM, application security, vulnerability management, Zero Trust, DevSecOps, and regulatory remediation while promoting responsible AI-enabled delivery and security-by-design.

Own the strategy, roadmap, and delivery of an international payments platform. Partner with engineering, commercial, market, and customer product teams to build reusable payment services, APIs, data capabilities, provider integrations, configuration tools, and fraud controls. Use payment performance data and AI responsibly to improve payment success, reliability, customer trust, and operational efficiency. Manage provider relationships, lead complex delivery, resolve cross-functional trade-offs, and align stakeholders around platform decisions.

Provides technical consulting for digital workplace transformations, including cloud and SaaS adoption, collaboration tools, automation, mobility, analytics, identity, security, and modern deployment solutions. Leads and mentors consultants, coordinates diverse onshore and offshore project teams, manages third-party and client resources, supports organizational change, and develops client-facing technical materials.

Monitors and triages security alerts, investigates incidents through resolution, conducts threat hunting, and develops or tunes detection rules. The analyst correlates endpoint, network, cloud, and identity telemetry; uses AI and automation to improve investigations; documents findings and incident reports; collaborates with global SOC and response teams; and helps maintain playbooks while participating in a weekend rotation approximately every five weeks.

Designs, builds, tests, and improves cloud security labs, challenges, and learning content for a cyber resilience platform. The role focuses on AWS, Azure, GCP, Kubernetes, SIEM, CSPM/CNAPP, containers, Terraform, serverless technologies, identity, access, networking, monitoring, and DevSecOps. Responsibilities include creating realistic attack-and-defense simulations, translating technical research into accessible content, collaborating with engineering and product teams, and supporting cloud security content strategy.

The Client Executive manages global enterprise accounts and sells complex technology solutions spanning hardware, software, professional services, supply chain, digital, and infrastructure services. Responsibilities include developing C-level relationships, expanding account opportunities, managing OEM and client partnerships, coordinating inside sales activities, qualifying opportunities, executing complex deals, and positioning networking, storage, virtualization, security, and cloud solutions. The role is an individual contributor with no required travel or direct reports.

Lead strategic customer success and transformation programs for major Celonis clients. Build executive relationships, define value roadmaps, coordinate cross-functional teams, drive platform adoption and measurable business outcomes, resolve escalations, and establish customer centers of excellence. Organize advisory boards, advocate for customer needs, support thought leadership, and mentor internal teams. The role requires extensive experience in customer success, strategy consulting, large-scale transformation, change management, and executive engagement.

Monitor and improve the organisation’s cybersecurity posture through security operations, incident response, vulnerability management, compliance activities, and security awareness. Investigate security alerts, incidents, and phishing activity; manage remediation processes; support Microsoft 365 security controls; and collaborate with IT teams and business stakeholders to reduce cyber risk.

Build and lead defensive capabilities securing AI and agentic systems across Citi. Responsibilities may include AI-assisted penetration testing, automated exploit validation, AI security architecture, model evaluation, guardrails, runtime monitoring, vulnerability management, security operations, detection, triage, and response. The role requires technical leadership across offensive security, detection, SecOps, AI governance, and production-scale LLM systems.

Lead GSK’s business-facing AI security function, owning AI use-case intake, triage, risk prioritization, governance decisions, and shadow AI remediation. Partner with business units, R&D, Enterprise AI, and senior leaders to assess GenAI, RAG, and agentic proposals against security and architecture standards. Apply EU AI Act and NIST AI RMF principles, represent security in governance forums, and shape AI Engineering priorities while maintaining productive stakeholder relationships.

Leads cybersecurity transition, governance, risk management, regulatory compliance, and remediation programs. Serves as a trusted advisor to business and technology stakeholders, translates technical risks into practical controls, conducts security and third-party risk assessments, reviews exceptions and risk acceptances, maintains risk registers, and reports cyber risk to executives. The role also supports audits, embeds security requirements into projects and services, and oversees emerging threats, vulnerabilities, and regulatory developments.

Drive growth across UK Defence and National Security customers by selling Janes software, data, and intelligence solutions. Build qualified pipelines, develop complex multi-stakeholder opportunities, manage account plans and forecasts, lead customer engagements, and negotiate enterprise agreements. The role requires understanding customer missions, engaging senior government stakeholders, coordinating cross-functional teams, and expanding existing customer adoption. Regular UK travel will comprise approximately 30–50% of working time.

Research and develop methods for detecting misalignment and loss-of-control risks in frontier AI systems. Build alignment evaluations, conduct pre-deployment testing, analyze model behavior, investigate incidents, and communicate findings to AI companies and governments. The role also involves designing evaluation software and tooling, publishing technical research, threat modeling, and mentoring collaborators. Candidates need substantial AI safety or alignment research experience, strong Python and machine learning engineering skills, and experience with frameworks such as PyTorch or Inspect.

Provides front-of-house security in a corporate commercial environment by managing access, monitoring CCTV, access control and fire systems, conducting patrols, identifying risks, responding to emergencies, completing reports and delivering professional customer service to staff, visitors, tenants and contractors. The role requires rotating day and night shifts, strong communication, vigilance, conflict-management skills and a valid Door Supervisor SIA Licence.

Provide professional on-site security and front-of-house service in a multi-tenant commercial building. Responsibilities include access control, CCTV and fire alarm monitoring, internal and external patrols, incident and emergency response, visitor management, security reporting, and escalation of safety or maintenance concerns. The role requires excellent customer service, communication, vigilance, sound judgment, and the ability to work independently on a 4-on, 4-off night shift pattern.

Manages and modernizes the global information security program across traditional, cloud, and SaaS environments. Oversees technical security controls, vulnerability management, alerting, incident response, SDLC security integration, security communications, regulatory alignment, risk prioritization, metrics, and security architecture. Leads hybrid teams and coordinates with operational teams, regulators, technical stakeholders, contractors, and managed service providers.

Leads Fractile’s information security, corporate IT, and infrastructure strategy. Owns cybersecurity governance, risk management, incident response, cloud and network security, IT service delivery, infrastructure reliability, business continuity, vendor management, and technology budgets. Protects semiconductor designs, source code, research environments, and intellectual property while building high-performing IT, infrastructure, and security teams and advising executive leadership.

Leads technical strategy, solution architecture, delivery, and product development for Altana’s UK policy and national security vertical. Owns capture and pre-sales technical content, customer deployments, security and accreditation obligations, support processes, staffing, and technical team development. Partners with commercial leadership, Platform Operations, Engineering, Product, and Design to deliver SaaS and PaaS solutions in secured and regulated environments.

Sell Microsoft security solutions to large enterprise customers by managing C-suite relationships, identifying opportunities, building security solutions and business cases, leading virtual teams, demonstrating cloud security architectures, coordinating partners, and driving deals from discovery through closure. The role includes pipeline management, forecasting, ROI and TCO analysis, revenue target attainment, and ongoing security product learning and certification.

Leads enterprise proxy, perimeter, and SSE/SASE security engineering across US operations. Designs and operates Zero Trust, identity-aware proxy, secure gateway, egress, segmentation, and cloud interconnect architectures. Owns roadmap execution, governance, remediation, lifecycle modernization, incident management, observability, and resiliency. Supervises engineers, establishes reusable security patterns, coordinates cross-functional delivery, and promotes secure, responsible AI-assisted engineering practices.

Lead high-severity security incident response and investigations across cloud environments. Own the incident lifecycle from detection through recovery, improve detection and response capabilities, develop automation and AI-assisted workflows, conduct root cause analysis, maintain operational documentation, communicate with executives, and mentor security engineers within a global 24/7 on-call operation.

Monitor CCTV, access control systems, alarms, and site activity; coordinate responses with security officers, management, and external agencies; maintain incident logs and audit records; support emergencies, evacuations, risk assessments, and operating procedures; and ensure confidentiality, data protection, and professional customer service standards.