Job Description Senior Network Engineer Duration: 6 Months Location:Milton Keynes & remote (hybrid) Rate: £500 - £540 per day Start: ASAP IR35 Status: Inside A Senior Network Engineer is required for our Government client to be responsible for designing, implementing, securing and maintaining enterprise network infrastructure with a focus on high availability, performance and resilience. This role provides advanced technical leadership across routing, switching, firewall administration and network security operations. You will also serve as an escalation point for complex issues involving Cisco switching platforms, Cisco Firepower Threat Defence (FTD) and Palo Alto Networks Next-Generation Firewalls, ensuring the network reliably supports business operations. Responsibilities include: Enterprise LAN/WAN design, optimisation and lifecycle management Firewall, IPS/IDS, and network security policy management Advanced troubleshooting of network performance, connectivity, and security issues Leading network modernisation, migration, and automation initiatives Ensuring compliance with security frameworks and organizational standards Collaboration with cross-functional IT teams to deliver secure, scalable solutions Essential Skills & Experience required: As the Senior Network Engineer you will possess the following skills & experience: Experience of support and design working within highly secure environments - essential Cisco Switching, Routing, Security and wireless technologies Network Protocols TCP/IP, BGP, ICMP, OSPF, IPSEC Cisco ASA Firewall Administration and design Cisco Firepower ( NGFW) Palo Alto Firewall administration. Knowledge of Virtual Environments and virtual network solutions,(ie VMWare ) Experience in Cisco ISE and PRIME BIG IP F5 Administration \ Configuration – LTM, ASM Network Monitoring PRTG Cisco ACI Azure \ AWS experience Desirable Skills and Experience: Experience of working within a variety of ITIL4 environments. Knowledge of IT Service Management toolsets ie ServiceNow Key performance reporting and documentation Stakeholder Management Leadership skills Experience of working in Government Sector If this role is of interest please email your CV to: joanne.stanley@certes.co.uk