Senior Network and Security Engineer

CMC Markets is looking for an experienced Senior Network & 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 & Experience Essential

Strong experience operating and troubleshooting Cisco ACI environments

Hands-on experience with multicast networking

CCNP-level networking knowledge or certification

Proven experience designing and building data centre and cloud networks

Solid knowledge of Cisco Catalyst and Nexus switch platforms

Excellent documentation, communication and stakeholder engagement skills

Desirable

Experience supporting Market Data network feeds

Exposure to SD-WAN technologies

Experience supporting low-latency production networks within trading or financial services environments

Experience with Cisco ASA and Meraki Wireless

Hands-on experience with Palo Alto firewalls

At CMC Markets, you’ll work with cutting-edge technology in a collaborative environment where reliability, security and performance are critical. If you’re passionate about networking and thrive in complex, high-availability environments, we’d love to hear from you.