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# Core Network Engineer

- **Company:** Exponential-e
- **Location:** London, United Kingdom
- **Experience:** Starter
- **Contract:** Permanent contract
- **Skills:** Border Gateway Protocol, Communications Protocols, Computer Networks, Data Centers, DDoS Mitigation, Virtual Private Networks (VPN), Multi-protocol Systems, Network Architecture, Network Planning and Design, Routing, Network Administration, Network Protocols, Open Shortest Path First (OSPF), Peering, BIG-IP Global Traffic Manager (GTM), Web Application Security, TCP/IP, Tcpdump, Wireshark, Computer Networking Systems, BIG-IP Local Traffic Manager (LTM), Computer Equipment, BIG‑IP Application Security Manager (ASM)
- **Published:** November 9, 2026
- **Apply:** https://www.reed.co.uk/jobs/core-network-engineer/57544615

## About the Role

* Experience working with Service Provider networks
 * Good understanding of networking protocols and technologies including:
 + TCP/IP
 + IS-IS, BGP, OSPF
 + MPLS
 + MP-BGP
 + L2 & L3 VPN services

 * Good troubleshooting ability including strong knowledge of network traffic analysing tools like Wireshark/TCPDump
 * Ability to work independently and as part of a team

Desirable knowledge and experience:

 * Layer-2 / EVPN / VXLAN Data Centre networks, Leaf-Spine architectures
 * Experience with BGP Peering, Transit
 * Knowledge of F5 BIP-IP products, including Local Traffic Manager (LTM) and Global Traffic Manager (GTM), Application Security Manager (ASM)
 * DDoS mitigation solutions

Experience with the following vendors would be advantageous, * Cisco Networking

 * Communication Protocols
 * Computer Hardware & Networking
 * Infrastructure Management
 * Network Administration
 * Network Architecture
 * Network Engineering
 * Routing Technologies
 * Secure Web Gateways
 * Technical Documentation

## Description

We're a company of innovators who think big and achieve bigger! Our people are crucial to the continuing success of our company. From our CEO to our new Graduates, each of our people demonstrates our PRIDE principles which are at the core of everything we do.

Overall Purpose of the role:

Your focus will predominantly be designing and implementing projects pertaining to the Core Network Infrastructure. You will be responsible for documenting the network design as well as providing a handover to your peers so that the solution can be maintained by the Operations team.

You will also be acting as an escalation point for incidents concerning core network infrastructure/services. You will be working closely with team members whilst providing mentoring where required for Core Network Operations engineers, as well as working with other internal teams.
Your responsibilities will be a split between:

Projects

 * Document and implement core network infrastructure
 * Collaborate with cross-functional teams to deliver projects on time
 * Provide a handover to your peers so that the infrastructure can be supported by the Operations team

Operations

 * Troubleshoot and resolve network issues within SLA
 * Act as a senior escalation point for team members and internal teams for incidents, requests and changes following existing ITIL based processes and procedures.
 * Due to the nature of the role you will be expected to fulfil some of your tasks out of hours and participate in the on-call rota for 24/7 support.