Network and Security SpecialistLondon (Moorgate) - Onsite - Permanent Competitive SalaryVIQU have partnered with a global trading organisation looking to hire a Network and Security Specialist to take ownership of network and cyber security across a critical London-based environment. This is a hands-on, technically led role where the Network and Security Specialist will be responsible for protecting systems, ensuring high availability, and strengthening security posture while supporting day-to-day operations and future growth.Key Responsibilities:• Design, implement, and maintain secure network and security infrastructure to meet current and future business needs. • Own the full network and security lifecycle, maintaining uptime close to 99.99%. • Monitor, investigate, and respond to security incidents using SIEM tools, Sophos MDR, and threat-hunting techniques. • Configure and manage firewalls, VPNs, IDS/IPS, web and email security solutions. • Maintain high patching and vulnerability remediation standards, including CVE management. • Coordinate annual third-party penetration testing and lead remediation based on risk and CVSS scoring. • Investigate cyber incidents, perform forensic analysis, and implement rapid mitigation actions. • Maintain and upgrade network switches, routers, and security devices. • Define, maintain, and enforce security policies, disaster recovery plans, and contingency procedures. • Create and maintain technical documentation and Jira tickets. • Suppo