Senior Network Engineer in London

Morae Global Corporation is seeking a highly technical, hands-on Senior Network Engineer to own and manage the switching, routing, and firewall infrastructure across our six global data centres. This is a critical role operating in a 24/7/365 high-availability environment that directly underpins Morae's eDiscovery hosting platform and on-premises hosting revenue.

We are in the midst of a major Data Centre Modernisation Programme — replacing end-of-life core routers and switches with new Cisco Nexus 9300, Catalyst 9200, and Catalyst 8300 platforms across all sites. The successful candidate will be instrumental in the design, deployment, and ongoing operation of this refreshed network estate. Above all, we need someone who can independently diagnose and resolve complex network outages under pressure.

Key Responsibilities:

• Act as the primary technical authority for all data centre network infrastructure, including switches, routers, and firewalls.
• Independently diagnose and resolve complex network outages, performance degradations, and connectivity issues across all six data centres.
• Perform root-cause analysis of incidents and produce detailed post-incident reports with remediation actions.
• Proactively monitor network health using SNMP, syslog, Cisco FMC, and enterprise monitoring tools.
• Maintain and execute network operations runbooks for daily monitoring of routers, switches, and firewalls.
• Play a lead technical role in the ongoing DC Modernisation Programme alongside our implementation partner.
• Develop and validate detailed cutover plans, runbooks, and rollback procedures for each site refresh.
• Manage Cisco Firepower 4115 HA firewall pairs across all regions using Cisco Firepower Management Centre (FMC).
• Design and maintain firewall rulesets, NAT policies, VPN tunnels, and DMZ architectures.
• Support ISO 27001 and SOC 2 compliance requirements relating to network security controls.
• Follow and champion ITIL-aligned change management processes for all network changes.
• Maintain accurate network documentation, topology diagrams, IP address management (IPAM), and configuration backups.
• Work closely with the infrastructure, VMware, storage, and information security teams.
• Mentor and upskill junior engineers on Cisco technologies and network best practices.

Technical Environment:

• Firewalls: Cisco Firepower 4115 (HA pairs), Cisco FMC
• Core Switching: Cisco Nexus 9300 Series (NX-OS 10.x)
• Aggregation/Access Switching: Cisco Catalyst 9200 Series (IOS-XE)
• Routing: Cisco Catalyst 8300 Series Edge Platforms (IOS-XE)
• Office Networking: Cisco Meraki MX Firewalls, Meraki Switches, Meraki Wireless APs
• WAN/Cloud: Azure vWAN, IPsec VPN, Cisco Umbrella
• Virtualisation: VMware vSphere / vCenter
• Monitoring: SNMP, Syslog, VMware ARIA
• Compliance Frameworks: ISO 27001, SOC 2 Type II

Skills & Experience Required:

• 5+ years managing Cisco switches and routers in a multi-site data centre environment.
• Expert-level Cisco NX-OS and IOS-XE experience.
• Hands-on Nexus 9300 deployment, VPC, vPC fabric configuration.
• 3+ years managing Cisco Firepower / FTD firewalls in HA.
• Strong understanding of DMZ architecture, ACLs, and zone-based security.
• Experience working in an ISO 27001 and/or SOC 2 certified environment.

Working Arrangements:

• Location: Hybrid – minimum 2 days per week in the Morae London office.
• Hours: Standard business hours with participation in an on-call rota.
• Travel: Occasional travel to data centre sites in the UK, US, and Switzerland.

Why Morae?

• Join a business investing heavily in infrastructure modernisation.
• Work with the latest Cisco platforms from day one.
• A culture that values technical depth and independent problem-solving.
• Opportunities to progress at your own pace.
• Competitive salary, benefits, and the opportunity to make a genuine impact.