Top Cyber Security Jobs in London

Lead global SCA and SAST strategy and tooling, integrate static and open-source scanning into CI/CD pipelines, reduce false positives, perform threat modeling and architecture reviews, mentor teams, and drive developer-first application security across diverse tech stacks.

Enforce the Ship Security Plan and support the Ship Security Officer: conduct security assessments and inspections, manage access control and screening (X-ray, metal detectors), lead security team and drills, investigate incidents, maintain security equipment and filing, coordinate with port authorities, and respond as first responder/active assailant team leader.

Lead Arrow's Microsoft Security strategy and partner activation across the UK&I channel. Build Microsoft and partner relationships, run enablement, campaigns and events, manage marketing budget, track KPIs, and drive customer and workload acquisition through reseller partners.

Support threat intelligence, incident analysis/response, penetration test coordination, vulnerability scanning and remediation tracking, security tool administration, dashboard maintenance, and adherence to security policies while learning and developing cybersecurity skills.

Design, automate, and maintain security controls, detection, and remediation systems; evaluate security technologies; perform risk assessments and threat models; partner with engineering for secure development; lead incident response and support compliance (SOC 2, ISO 27001); manage bug bounty and vulnerability disclosure programs.

Deployable Emergency Response Team member providing humanitarian access, safety and security expertise during emergencies (65% deployment). Lead risk analysis, access and security strategies, stakeholder negotiations, incident reporting and communications setup. Deliver trainings, support incident management, advise program design and ensure handover and partner capacity-building.

Design and implement Microsoft-based security architectures (Azure, Entra, Defender, Sentinel). Consult with clients to gather requirements, produce solution proposals, ensure governance/compliance, lead technical delivery, and produce detailed documentation.

Lead and own the information security program and security engineering at NEAR Foundation. Drive SOC 2 Type 2 and ISO 27001 readiness, run logging/monitoring/incident response, manage vulnerability and third-party risk, harden identity/access/endpoint stacks, automate security and compliance across SaaS, and advise on tooling and cloud security (AWS/GCP).

Lead and grow Platform & Security sales across the UKI region by managing AEs and Specialists, defining go-to-market strategy, driving regional forecast and revenue, coaching teams, building executive customer relationships, partnering cross-functionally on complex multi-product deals, and influencing product roadmap with EMEA and global leadership.

Lead security engineering across web apps, APIs, cloud (AWS/OCI), Kubernetes, and on-prem systems. Build CI/CD security, secure genomic and PHI/PII pipelines (HIPAA), run monitoring and incident response, prepare for HIPAA/SOC2/ISO27001 audits, perform pentesting/vulnerability discovery, improve logging/SIEM, and drive remediation with engineering and DevOps while raising company-wide security awareness.

Conduct deep technical research to identify novel risks and attack vectors in cloud- and AI-native architectures, produce proofs-of-risk and technical POCs, and partner with Product and Engineering to translate findings into product capabilities.

Secure Aptos core infrastructure and products via design reviews, code audits, penetration tests; build security tools and mitigations; define secure operational practices; advise engineers; and triage bug bounty reports.

Lead technical design and delivery of advanced AI solutions (ML, generative and agentic AI), drive adoption of modern AI engineering and cloud-native architectures, ensure responsible AI practices, mentor and manage a small team, and liaise with clients to translate business needs into production-grade, secure AI systems.

Define and implement a cloud security framework across Azure, AWS and SaaS; deploy automated security controls and tooling; create detection and incident response playbooks; collaborate with SOC, GRC and IT to operationalise controls; support compliance (ISO27001, SOC2, NCSC) and guide developers and junior engineers on secure practices.

Design and implement secure cloud-based solutions and DevSecOps practices. Automate security tooling in CI pipelines, perform threat modelling and vulnerability management, support penetration testing, review security outputs, convert findings into actionable work, verify secure architectures, and coach junior team members.

Lead Security Engineer responsible for directing security engineering and testing across platforms and services, defining testing methodology and tools, performing penetration testing and secure code assessment, embedding security in CI/CD pipelines, threat modelling, and mentoring junior engineers while liaising with stakeholders and customers. Role requires defence experience and an active security clearance.

Perform protocol-focused security research to prevent vulnerabilities on Ethereum mainnet. Tasks include AI-assisted analysis, fuzzing, manual review, reviewing hardforks and spec changes, improving security tooling and automation, coordinating disclosures, and supporting audits and audit competitions while collaborating with devops, specifications authors, and client implementers.

Lead research and advisory on application security for enterprise applications (ERP/CRM). Produce thought leadership, client-facing insights, presentations, market analysis, and support sales. Mentor analysts, drive research agenda, improve processes, and advise CIOs on security strategy, vendor evaluation, metrics, and vulnerability testing across major vendors (SAP, Salesforce, Workday, Oracle).

Lead research and thought leadership on threat and exposure management. Produce high-value insights, analyze market trends, advise clients, support sales, present at events, mentor analysts, and improve research processes. Engage clients virtually and in person, delivering actionable recommendations and peer-reviewed content while collaborating across global teams.

Produce thought-leading research and advisory on security operations, threat detection, incident response and automation. Engage clients via written research, inquiries, presentations, and events; mentor practitioners; support sales and media; and maintain expertise across SIEM, SOC ecosystems, cloud/on-prem security, and automation trends.

Lead security engineering for Hummingbird's infrastructure: harden AWS (Terraform), manage vulnerability and dependency tooling, develop threat intelligence, own incident response and disaster recovery, and shape long-term security posture while collaborating across a small senior engineering team.

Design, implement and improve security tools and platforms across cloud, SaaS and enterprise environments. Evaluate and adopt new and AI-enabled security technologies, support observability and telemetry, lead technical incident investigations, ensure compliance with security architecture and governance, and influence stakeholders to embed security best practices.

Lead and improve ZODL security posture, manage incident response, coordinate external audits, advise staff on operational and personal security, prioritize mitigations, recruit security talent, and collaborate with engineering and research to secure Zcash software and protocols.

Lead design and implementation of security tooling, harden cloud and IT infrastructure, detect and respond to incidents using SIEM/EDR/SOAR, perform threat hunting, administer IAM and monitoring, contribute to policies and forensics, and partner with engineering on AI-related security risks and automation.

Own end-to-end enterprise sales in the Nordics/UK for a security platform that maps internet-exposed assets and runs automated AI penetration testing and DAST. Build territory plan and pipeline, engage technical buyers (CISOs, AppSec, Security Engineers), run demos and POCs with Sales Engineering, close complex six-figure ACV deals, and establish regional playbooks and partnerships.