Senior Core Infrastructure Engineer

We’re looking for a Senior Infrastructure Engineer to join a global team delivering secure, scalable, and highly available network environments across multiple regions.

This is a hands-on role suited to someone with strong Cisco networking experience (ideally Nexus) and expertise in Fortigate firewalls, who thrives in complex, enterprise environments.

What you’ll be doing:

  • Designing and supporting global network infrastructure (LAN/WAN/Data Centre)
  • Managing Cisco routing & switching (BGP, VLANs, STP, LACP)
  • Configuring Fortigate firewalls, VPNs & security policies
  • Troubleshooting complex, multi-site network issues
  • Supporting virtualised environments (VMware, Hyper-V, Nutanix)
  • Contributing to architecture, performance tuning & incident response
  • Collaborating with global teams (with on-call rota participation)

What we’re looking for:

  • CCNA (or higher)
  • Strong Cisco networking background (Nexus highly desirable)
  • Fortigate firewall experience in enterprise environments
  • Solid understanding of network security & best practices
  • Experience working in global/distributed teams

Nice to have:

  • NetApp storage / NCDA
  • pfSense, SD-WAN, or cloud networking (AWS/Azure/GCP)
  • Scripting/automation (Python, Ansible)

Why join?

  • Fully remote role
  • Work on enterprise-scale infrastructure
  • Be part of a global, collaborative tech team

Job Details

Company
The SJB Group
Location
Leeds, England, United Kingdom
Hybrid / Remote Options
Posted