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Senior Network and Security Engineer

Job Description

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

CMC Markets is an equal opportunities employer and positively encourages applications from suitably qualified and eligible candidates regardless of , , marital or civil partner status, reassignment, race, colour, , or origin, or belief, or .