Network & Security Consultant

Job Title: Network & Security Consultant Day Rate: £400-450 per day - Outside IR35 / Limited Company Duration: 6 months initially Location: Central London - Fully onsite Start Date: ASAP RoleWe are assisting a client who require an experienced Cisco Network & Security Consultant to support a network and security infrastructure refresh, covering the deployment of Cisco Secure Firewall technology alongside a Cisco switching migration. This role requires strong technical capability across both network security and enterprise networking, with particular emphasis on Cisco Secure Firewall and advanced BGP. Key Responsibilities

• Design and deployment of a new Cisco Secure Firewall Management Center (FMC) High Availability pair
• Deployment and configuration of HA pair Cisco Secure Firewalls
• Migration of existing legacy firewall configurations to the new environment
• Review and optimisation of migrated configurations in line with current Cisco and security best practices
• Configuration and migration of firewall policies, NAT, objects and routing
• Integration of the new firewall infrastructure with the existing network
• Configuration and troubleshooting of BGP and associated routing
• Migration of Cisco Catalyst 3850 switch stacks to Catalyst 9300
• Migration of VLANs, trunks, port channels and Layer 3 configurations as required
• Production implementation, testing and cutover
• Troubleshooting across network, routing and security layers
• Production of relevant technical and implementation documentation

Essential Skills & Experience

• Strong hands-on experience with Cisco Secure Firewall / FTD
• Strong experience with Cisco Firewall Management Center (FMC)
• Experience deploying FMC and firewalls in High Availability configurations
• Proven experience with firewall migrations and configuration optimisation
• Advanced BGP knowledge, including configuration and troubleshooting
• Strong understanding of routing protocols and enterprise network design
• Cisco Catalyst switching experience
• Experience with Catalyst 3850 and Catalyst 9300 platforms
• Strong knowledge of VLANs, trunking, EtherChannel/PortChannel and Layer 3 switching
• Experience delivering network and security changes within production environments
• Strong troubleshooting skills across both networking and security technologies

Technical Environment Cisco Secure Firewall FTD FMC High Availability BGP Routing Cisco Catalyst 3850 Cisco Catalyst 9300 Switching VLANs NAT Firewall Policy Network Security