Network and Security Specialist London (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 life cycle, 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. Support infrastructure a