Cyber Security Jobs

Palo Alto Networks · Seville, Spain

Serve as a trusted technical advisor to enterprise customers, leading engagements across cloud, hybrid and on-premises environments to design and implement Certificate Lifecycle Management, PKI and Machine Identity Security solutions. Work spans discovery, architecture, implementation, integration, automation and enablement, collaborating with security, PKI, cloud, DevOps and engineering teams. Primarily consultative and delivery-focused rather than direct sales.

Palo Alto Networks · Rome, Italy

Acts as a trusted technical advisor to enterprise customers, leading engagements from discovery and architecture through implementation, integration and automation of Certificate Lifecycle Management, PKI and Machine Identity Security. Works across cloud, hybrid and on-premises environments with security, DevOps and engineering teams, building reusable patterns and blueprints. Primarily consultative and delivery-focused rather than direct sales.

Palo Alto Networks · Israel

Serves as a trusted technical advisor to enterprise customers, leading engagements from discovery and architecture through implementation, integration and automation of Certificate Lifecycle Management, PKI and Machine Identity Security. Works across cloud, hybrid and on-premises environments with security, DevOps and engineering teams, building reusable patterns and blueprints. Primarily consultative and delivery-focused rather than direct sales.

Palo Alto Networks · Paris, France

Serve as a trusted technical advisor to enterprise customers, leading engagements across cloud, hybrid and on-premises environments to design and implement Certificate Lifecycle Management, PKI and Machine Identity Security solutions. Work spans discovery, architecture, implementation, integration and automation using PowerShell, Python, Kubernetes, Terraform and major cloud platforms, collaborating with security, DevOps and internal delivery teams.

Palo Alto Networks · United Kingdom

Serve as a trusted technical advisor to enterprise customers, leading engagements across cloud, hybrid and on-premises environments to design and implement Certificate Lifecycle Management, PKI and Machine Identity Security solutions. Work spans discovery, architecture, implementation, integration, automation and enablement, collaborating with security, PKI, cloud, DevOps and engineering teams. Primarily consultative and delivery-focused rather than direct sales.

Barclays · Northampton

Supports delivery of risk-based internal audits across Barclays UK, assessing controls over customer journeys, business processes, digital channels, technology platforms and data environments, including fraud, financial crime and operational resilience. Uses data analytics and technology-enabled audit techniques to evaluate control effectiveness and communicate findings to senior stakeholders. Hybrid role based in Northampton.

Cloudflare · London

Identifies, analyses and supports remediation of vulnerabilities across Cloudflare's infrastructure and cloud environments, triaging findings from Qualys, Nessus and Rapid7 against defined SLAs. Works with engineering, infrastructure and compliance teams on DoD IL4 and FedRAMP preparation, using AI-driven tooling to improve scanning, triage and automated remediation.

Cloudflare · London · €54,000 – €75,000 pa

Join the Security Rules team to design, build and operate microservices behind Cloudflare's Application Security products such as Rate Limiting and Web Application Firewall. Work mainly in Rust and Go across distributed systems, databases, Docker and Kubernetes, with on-call duties and mentoring responsibilities.

Cloudflare · London · US$215,000 – US$225,000 pa

Lead research, design and evaluation of detection models identifying automated, fraudulent and malicious activity across Internet-scale traffic. Own the detection measurement framework for noisy or delayed ground truth, mentor others, and drive cross-functional detection strategy with ML, data and product teams.

Cloudflare · London

Acts as primary technical responder for premium enterprise customers, autonomously investigating complex threat telemetry and handling live incident response for volumetric DDoS and application-layer attacks. Implements mitigation across OSI Layers 3, 4 and 7 using Cloudflare's security suite, performs packet and traffic flow analysis, and advises customers during active incidents. Requires 24x7 rotating shifts.

Cloudflare · London · €66,000 – €91,000 pa

Builds and operates microservices behind Cloudflare's Application Security products such as Rate Limiting and Web Application Firewall, working mainly in Rust and Go with Docker, Kubernetes, PostgreSQL, Kafka and Clickhouse. Senior engineers lead complex projects from design through production, mentor peers, and improve reliability of distributed systems at global scale, with on-call flexibility required.

Mimecast · London · £44,000 – £66,000 pa

Acts as the trusted technical advisor for a portfolio of mid-market accounts, working in a three-person pod with an Account Manager and Renewals Manager. Owns platform adoption, configuration health and value scoring across email security, HRM and Incydr products, and packages proof-of-value and business reviews for executive audiences. Also leads churn mitigation and identifies expansion signals ahead of renewal.

Risk Ledger · London · £90,000 – £100,000 pa

Owns and matures security operations across cloud, endpoint and SaaS environments, covering detection engineering, incident response, vulnerability management and AWS/GCP security posture. Over time shifts toward security engineering and architecture, designing scalable telemetry and detection platforms and embedding secure-by-design principles with engineering teams.

eFinancialCareers · London

Engineering-led role building defensive capability against AI-driven threats, spanning AI-assisted vulnerability management, security architecture for agentic AI, and detection and response for AI-originated attacks. Sits within Citi's CISO organisation across four teams, with a mandate to ship production tooling rather than work in an innovation lab.