Core Network Engineer
Confirmed on the employer's own hiring board on Oct 17, 2026. First seen by Alion on Jul 10, 2026. Exponential-e scores B on the Alion truth index.
Exponential-e
Founded in 2002, Exponential-e swiftly established itself as a UK Cloud, Connectivity and Communications pioneer. Throughout our history, a focus upon leveraging leading-edge technology to deliver profitable and innovative services to our clients and prospects has resulted in industry and peer recognition for our ground-breaking approach, a truly world-class ICT services company.
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.
Knowledge and experience required:
- 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
- Nokia 7450 & 7750
- F5 BIG-IP
- Fortigate
Our People
Our people are what makes Exponential-e Group the company it is today. This year’s employee survey highlighted that 81% of employees who took the survey, would recommend a friend to work for our organisation.
Learning and development are fundamental parts of daily life at Exponential-e. From their first day at the company, everyone is provided ample opportunities to develop their skills and broaden their horizons, with our own L&D team running a range of bespoke courses, based on the latest innovations and challenges across the digital landscape.
Exponential-e Group is committed to providing equal opportunities in employment and treating all employees with respect and dignity. The company respects and values the diversity of its staff, striving to maintain an environment where there is opportunity for everyone to feel valued, their talents to be utilised and for both personal and organisational aspirations to be met. Every employee plays a vital role in helping to create an inclusive working environment by understanding and harnessing difference in a positive way.