Top Cyber Security Jobs in London

As a Lead Value Engineer, you'll drive data-driven business transformations for clients, ensuring successful adoption of Celonis technologies, managing value workshops, and translating strategic objectives into actionable insights.

Plan, implement, and maintain identity and access management systems across cloud and on-premises environments. Manage authentication, privileged access, identity governance, cloud IAM, DevSecOps integrations, automation, documentation, incident response, audits, and compliance activities. Advise technical teams on security controls, monitor IAM metrics, support remediation tracking, and coordinate regional incident response using enterprise service-management tools.

Manage information security compliance, policies, audits, and assessments aligned with ISO 27001 and SOC 2. Serve as the primary client contact for audit requests, security documentation, and compliance inquiries. Collaborate with internal teams on corrective actions, report compliance metrics to senior management, train employees, and monitor regulatory developments. The role requires at least five years of financial-industry compliance experience, strong client-facing communication skills, and in-depth ISO 27001 knowledge.

Deliver offensive cybersecurity services for high-profile clients, including reconnaissance, social engineering, penetration testing, vulnerability assessments, threat modeling, and cyber-attack simulations. Responsibilities include supporting technical scoping, conducting fieldwork, preparing assignment reports, managing tasks, and staying current with cyber threats and technology trends. The role requires penetration-testing experience, recognized certifications, infrastructure and web application testing expertise, and familiarity with industry-standard security tools.

Leads cyber security assurance and advisory engagements, advising clients on strategy, resilience, controls, compliance, emerging technology, and vCISO services. Responsibilities include team leadership, coaching, resource management, recruitment, quality assurance, client relationship management, proposal development, business development, and profitable delivery of cyber services.

Conduct outbound cold calls and emails, identify prospect needs, qualify marketing leads, and create new business opportunities. The representative will manage sales targets, collaborate across sales teams, communicate with senior stakeholders, and serve as a subject matter expert on Abnormal AI products. The role requires fluent French, strong communication, organization, resilience, sales planning, and familiarity with outbound sales techniques and AI-assisted prospecting tools.

Build and maintain Ruby on Rails backend features for vulnerability management, including security dashboards, reports, and ingestion pipelines. Improve system performance, reliability, and scalability; collaborate across backend, frontend, product, design, and security teams; review code; address technical debt; and participate in on-call rotations. The role requires relational database experience, distributed-team collaboration, technical problem-solving, and contributions across the stack when needed.

12-month graduate accelerator that trains early-career candidates in technical presales across collaboration, security, networking, and cloud. Participants complete immersive bootcamp, three rotations, earn certifications, use AI-enabled learning, and transition into Solutions Engineer roles in Global Virtual Engineering.

12-month Cisco Sales Associates Program (CSAP) training recent graduates into Associate Sales Representatives. The role includes immersive bootcamp training, three rotational sales assignments, mentorship, AI-enabled simulations, and progression to an Inside Account Executive position working across Collaboration, Security, Networking, and Cloud with Solutions Engineers to drive customer outcomes.

Lead development and execution of Charterhouse's wholesale and channel go-to-market strategy. Build partner propositions, commercial models, and onboarding processes; personally drive revenue as a player‑manager; recruit and scale a channel sales team; formalise existing informal wholesale relationships; collaborate cross-functionally with Technology, Operations, Marketing, Legal, and Sales Administration to deliver scalable channel offerings and reporting.

Supports telecoms security governance, risk, compliance, policy implementation, audit readiness, and training activities. Maintains compliance trackers, risk registers, evidence repositories, asset registers, business impact assessments, and risk treatment plans. Coordinates evidence gathering for audits and Ofcom regulatory requests, prepares dashboards and reporting packs, tracks policy compliance, and assists with security awareness initiatives. Requires organizational skills, cybersecurity governance interest, Telecoms Security Act knowledge, familiarity with ISO 27001, NIST, and Cyber Essentials, plus governance or compliance experience.

Own the full enterprise sales cycle across the UK, from prospecting and pipeline development through negotiation and closing. Drive new-logo acquisition, manage complex multi-stakeholder deals, deliver tailored demonstrations and proof-of-value engagements, and build trusted customer relationships. Collaborate with Sales Engineering, Product, Marketing, and leadership while maintaining forecasts in Salesforce. The role also includes mentoring junior team members and consistently exceeding sales quotas.

Own day-to-day security operations across endpoints, identity and access, cloud, and SaaS tools. Administer MDM, patching, encryption, device compliance, and joiner/mover/leaver processes. Monitor alerts, investigate incidents, support access reviews, and improve security controls. Contribute compliance evidence for SOC 2, ISO 27001, and ISO 42001, plus vendor and customer security questionnaires. The role also provides practical desktop and device support while developing broader audit, compliance, and vendor-risk expertise.

Supports cybersecurity governance, risk, and compliance across multiple client accounts. Partners with executives and stakeholders to align security requirements with policies, contracts, and regulations; monitors compliance, coordinates remediation and incident response, assesses risks, prepares security reporting, reviews security requirements in RFPs and contracts, and supports security control implementation and continuous improvement.

Lead field-facing AI security strategy for enterprise customers by designing secure LLM/RAG architectures, delivering demos and POVs, advising on data protection and unsanctioned AI usage, and scaling enablement and product feedback across sales, product, and engineering teams.

Senior security researcher responsible for large-scale data collection and analysis, operating and building honeypots, performing vulnerability research and reverse engineering, developing automated tooling and GenAI/LLM workflows, collaborating with intelligence teams, reproducing vulnerabilities, and publishing technical research.

Leads security operations by managing major incidents, engineering SIEM detections, applying MITRE ATT&CK, developing automated response workflows, and improving threat-informed monitoring. Partners with engineering and platform teams on cloud security, vulnerability management, threat modeling, and security architecture. Provides technical leadership, mentors analysts, reports operational metrics, and supports ISO 27001, SOC 2, and NIS2 compliance.

Senior solutions architect advising central government and defence CTOs/CIOs. Lead multi-domain architectures (networking, security, cloud, collaboration), shape strategic bids and digital transformation programs, liaise with cross-functional teams, and influence long-term technology roadmaps for mission-critical national infrastructure.

Manage inbound and outbound sales opportunities for a developer-focused cybersecurity startup. Responsibilities include following up with leads, prospecting, cold calling, managing CRM sequences, supporting growth initiatives, and contributing across commercial activities. The role requires a tech-savvy, self-starting salesperson who can work independently and commute to London.

Defines and governs secure, resilient enterprise technology architecture across on-premises, hybrid, multi-cloud, data center, AI/ML, edge, and emerging technology environments. Establishes architecture standards, controls, guardrails, threat modeling, detection engineering, and secure runbooks. Leads modernization roadmaps, risk assessments, design assurance, and technical trade-off decisions while embedding security into DevOps and platform engineering. Partners with enterprise architects, cybersecurity, SOC, risk, legal, vendors, and technology teams, and provides architectural leadership and mentoring.

Leads global Security Operations Enablement, overseeing data engineering, analytics, SIEM/SOAR engineering, security platform strategy, automation, governance, architecture, vendor relationships, and performance. Manages a team of 20+ engineers while partnering with incident response, cyber defense, threat management, security engineering, and enterprise architecture leaders to deliver scalable detection and response capabilities.

Develops Elastic’s footprint within UK Defence by expanding existing business, building relationships, generating demand, identifying use cases, managing complex sales cycles, closing transactions, and growing territory revenue through customer, partner, and defence community ecosystems. The role requires SaaS sales expertise, defence-sector relationships, accurate forecasting, open-source go-to-market knowledge, and an active security clearance.

Designs and delivers enterprise security architectures for clients across financial services, critical infrastructure, and government. Responsibilities include security architecture reviews, cloud and network security, identity and access management, DevSecOps, security monitoring, Zero Trust, risk management, governance, compliance, and advising executive stakeholders. The role requires developing secure end-to-end solutions and maintaining security controls across complex environments.

Lead and scale strategic partner motions (channels, GSIs, ISVs, OEMs, cloud, silicon) to drive joint go-to-market plans, revenue, and market expansion. Build executive relationships, enable partners technically and commercially, establish pipeline governance, and coordinate product, sales, marketing, and engineering to convert partner potential into measurable customer impact.

Provide day-to-day operational support for cloud security and compliance across AWS, Azure, and GCP. Monitor security controls, investigate vulnerabilities and misconfigurations, coordinate remediation, manage CSPM and CNAPP tooling, implement security baselines, develop automation, maintain documentation and runbooks, and participate in incident response, troubleshooting, root cause analysis, and continuous improvement.