Cyber Security Jobs

CrowdStrike · Romania

Security researcher role on CrowdStrike Intelligence's Advanced Research Team, developing automated solutions for large-scale data collection, operating and extending honeypots, performing vulnerability research, and reproducing emerging vulnerabilities. The position also involves publishing research on the blog or at conferences and building GenAI/LLM workflows to support analysis and security research.

CrowdStrike · Germany

Senior technical consultant conducting front-page incident response investigations for Fortune 100 organisations, performing host and network forensics across Windows, Mac and Linux, hunting adversaries in large data sets, and producing written and verbal findings for customers, regulators and legal counsel.

Palo Alto Networks · London

Provide advanced technical support for Cortex XSIAM customers, triaging tickets, calls and escalations within SLAs and performing application- and OS-level troubleshooting. Work with developers to reproduce issues and implement permanent fixes, and with technical account managers to mitigate risk in customer environments. Requires SIEM, EDR and endpoint security expertise plus UK security clearance.

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

Builds and maintains a Chromium-based browser engine, remote rendering and streaming tech, and distributed services that run browser sessions across a global network. Day-to-day work spans C++ browser code, Go/Rust/TypeScript services, debugging across browser processes and Linux hosts, and improving latency and reliability, with production on-call.

Palo Alto Networks · United Kingdom

Provide advanced technical support for Cortex XSIAM customers, triaging issues via ticketing, phone and remote sessions, and performing application- and OS-level troubleshooting. Work with developers to reproduce faults and implement permanent fixes, and with technical account managers to mitigate risks in customer environments.

Airbus · Chippenham

Day-to-day administration of the Spacecraft Control Centre's Linux and Cisco-based command and control systems, including configuration, equipment swap-outs, and restoration of capability. Acts as lead engineer for deployment planning, testing, and patching of system upgrades across a multi-site SCOF network, liaising with customers on fault investigation. Requires in-date RHCSA and offers hybrid, flexible working.

Appcast Enterprise · Farnborough

Protects a critical defence IT application and infrastructure by running vulnerability scans, managing endpoint security, responding to incidents and hardening systems. Works with frameworks such as Government Functional Standard 007 and standards like CIS, STIG and NIST, leading security implementation and assurance on a major UK government programme.

CrowdStrike · United Kingdom · €55,500 – €85,250 pa

Serves as the technical bridge between CrowdStrike and its European integration partner ecosystem, driving design, delivery and go-to-market of Falcon Platform integrations. Acts as a sales engineer for partner activity, running demos, proof-of-value execution and RFI/RFP responses while building demo environments and reference architectures. Involves public speaking, partner enablement and applying AI-assisted tooling to scale low-touch onboarding.