CMC Markets is looking for an experienced Senior Network and Security Engineer to join our Technology team. This role plays a key part in designing, building and supporting our global network infrastructure, ensuring high performance, resilience and security across on-premise and cloud environments. You will work across both project delivery and business-as-usual operations, supporting critical trading platforms in a fast-paced, regulated environment. Key Responsibilities Design, implement and maintain CMC Markets'' global LAN, WAN and cloud network infrastructure Deliver network engineering and design for new initiatives, alongside ongoing BAU growth and optimisation Monitor network performance, capacity and availability, providing proactive support and troubleshooting Implement new network services in line with internal policies, standards and security requirements Identify, advise on and remediate network and security risks Maintain secure VPN connectivity with external partners, ensuring alignment with current best practices Perform BAU changes and troubleshooting on Palo Alto and Cisco ASA firewalls Lead investigation and resolution of network and security incidents Collaborate closely with internal technology teams to resolve connectivity issues Maintain accurate technical documentation and diagrams Ensure all work is delivered in line with CMC Markets'' policies, procedures and compliance obligations Skills and Experience Essential Strong experience operating and ..... full job details .....