Top Cyber Security Jobs in London

Support sales reps with product and program information, drive OEM partner growth through strategic programs, create and deliver training, manage sales pipelines, represent partners at events, build relationships with decision-makers, lead partner customer meetings, analyze data for insights, and maintain sales training materials.

First dedicated security hire to build Wexler's security program across infrastructure, product, and compliance. Own tooling, embed secure-by-design practices, run risk assessments, maintain ISO 27001 ISMS, and demonstrate security posture to customers.

Provide on-the-ground security oversight for film and episodic productions: develop and maintain security plans, assess locations, liaise with vendors and authorities, monitor risks and schedule changes, run briefings, conduct social media research and incident response, and advise production leadership to protect talent, crew, assets and IP.

Protect and monitor Liberty Globals tier-1 core network: identify and remediate network security weaknesses, trace BGP/DDoS/malicious traffic, create monitoring use cases and playbooks, liaise with internal and external teams, mentor engineers, and drive implementation of industry best-practice network hygiene.

Provide physical security design and assurance across the project lifecycle for international clients, focusing on electronic security systems (CCTV, access control, intrusion alarms), layered physical protection, standards compliance, surveys, technical specifications, stakeholder coordination, and implementation support. Travel up to 50% across Europe and the Middle East.

Lead and execute complex red team, purple team, assumed-breach, and adversary-emulation engagements. Develop realistic attack objectives and attack paths across enterprise, identity, cloud, and endpoint surfaces, run authorised offensive operations (including social engineering), validate detections, produce evidence-based reports, and mentor junior staff while collaborating with incident response, threat intel, and detection engineering teams.

Lead global cloud reliability, infrastructure, and security for a high-growth B2B SaaS platform. Define infrastructure strategy, improve CI/CD and automation, drive observability and SLOs, enforce security and compliance, and enable engineering teams with scalable, reliable cloud architecture across distributed teams.

Sell Salesforce Platform Cloud products focused on data security, governance and ALM. Collaborate with Account Executives and partners to generate leads, manage full sales cycles, exceed quota, create territory and account plans, enable internal teams, and close enterprise deals while acting as a trusted advisor on Platform capabilities and AI/Agentforce solutions.

Operate and maintain security monitoring systems, detect and investigate incidents, perform incident response and remediation, tune detections, and collaborate with engineering teams to improve security posture.

No role-specific responsibilities were included in the provided job description.

Design, implement, and validate anti-scraping defenses through red-team/blue-team testing. Develop bypass strategies, automated adversarial scripts, and conduct Android reverse engineering, packet analysis/tampering, and offensive/defensive drills to protect JD's platforms.

Lead application security efforts by embedding security into the SDLC, performing code reviews, threat modeling, pen tests, and vulnerability management. Build automated SAST/DAST/SCA testing in CI/CD, develop secure coding standards and libraries, run security training and a champions program, and support bug bounty and blockchain/mobile app security assessments.

Lead security compliance audits and assessments, identify gaps and drive remediation, coordinate third-party audits and evidence collection, collaborate with cross-functional teams to implement security controls and standards (PCI, SOC 2, ISO 27001, NIST), provide reporting and recommendations, and evolve eBay's global security compliance program.

Design and apply security architecture for cloud and software solutions. Embed security practices into Agile delivery, assess existing systems, recommend mitigations, mentor engineers, lead small teams, and support security testing, CI/CD security and compliance with standards.

Lead secure design and review of cloud platforms and services, advise Agile teams on security best practices, test software/infrastructure security, mentor and manage staff, and ensure compliance with standards and regulations across public, healthcare, defence, and commercial projects.

Lead and evolve enterprise security architecture for international operations. Define frameworks and standards, provide architectural governance, design secure cloud, application, infrastructure, and data solutions, conduct threat modelling and risk assessments, drive secure-by-design and DevSecOps practices, and ensure alignment with regulatory and business risk.

Plan, conduct and lead independent third-party audits for QMS and ISMS. Gather objective evidence, prepare impartial audit reports, host opening/closing meetings, build client relationships, travel regionally, and complete lead auditor training/qualifications.

Lead platform security for London Market, embedding secure-by-design across squads. Design, automate, and operate security controls in cloud and on-prem platforms, drive AppSec and vulnerability management, influence architecture, support incident response, and mentor chapter members to raise DevOps and security maturity.

Lead rebuilding of security, privacy and resilience programmes. Own strategy, governance and incident response; drive BC/DR, cloud and third-party security, GDPR/PCI compliance, board reporting, and embed security into engineering and delivery.

Lead platform security initiatives: define requirements, evaluate and implement security technologies (EDR, DLP, SOAR, SIEM), troubleshoot across Windows/Linux/macOS, develop architectures and documentation, manage security tool sustainment, update policies, and partner with IT and stakeholders to mitigate risk.

Design and implement cloud-native security controls and guardrails across Azure/AWS/GCP and managed Kubernetes clusters. Improve product security in the SDLC by building secure infrastructure-as-code, admission controls, secrets management, and observability. Perform architecture reviews, security assessments, and support incident detection and response while advising platform and engineering teams on secure AuthN/AuthZ, service mesh, and cluster hardening.

Provide cloud security assessments and advisory for Azure, M365 and GCP; optimize Defender and security monitoring; improve Conditional Access and IAM; maintain SIEM and vulnerability tooling; support cyber incident response; ensure compliance and perform audits; implement IaC best practices (Terraform) and advise on threat detection and remediation.

Design and implement platform security features, act as security SME for Core Services, perform threat modeling and secure code reviews, support incident response and vulnerability remediation, and provide secure coding standards and developer training.

Own detection, triage, and response for cloud, endpoint, and SaaS; extend DLP and identity controls; manage MDM/device compliance; run vulnerability scanning and remediation; translate SOC 2/ISO 27001/PCI/DORA requirements into technical controls and automated checks; operate Bug Bounty triage; build scripts and lightweight tools to automate security operations and audit evidence.

Design, implement and govern enterprise network security controls across on‑prem, cloud and container environments. Lead Zero Trust and micro‑segmentation initiatives, manage firewalls/proxies (Palo Alto, Fortinet, Zscaler), support LAN/WAN/Data Centre services, provide 3rd‑line escalation, shape roadmap, produce designs and standards, and support audits and cross‑team integration in a regulated, high‑availability environment.