Senior/Lead Network Engineer

Job Details

Job title

Senior Network Engineer

Reports to (job)

Senior Manager – Compute & Infrastructure

Team

Cloud Services (Network’s)

Location

Manchester / Birmingham / Ipswich / London

Job Dimensions

Lead the design, implementation, and support of enterprise-scale network infrastructure. This role blends hands-on engineering with strategic design and operational delivery, supporting both on-premises and cloud-based environments.

Hours

Full time

No. Direct Reports

0

Career Level

D

Why BT Group?

We’ve always been an organization with purpose; we connect for good.   You can trace this back to our beginning as pioneers of the world’s first telecommunications company.  At our heart, we’re a technology company with research and innovation in our bones, and a desire to be personal, simple, and brilliant for our customers - the values we live by. Creating an inclusive working environment where people from all backgrounds can succeed.

Our pursuit of progress over the past 180 years has established BT as a strong, successful brand, with huge scale, capable of achieving great things.  From supporting emergency services, hospitals, banks and keeping economies around the world online, safe, and secure, to delivering large scale innovative technology infrastructure like the creation of BT Sport. 

Today, in this fast changing, always on, digital world, our purpose remains true. Yet the market conditions, regulation and competition we face are tougher than ever before.  So, if you have the drive, optimism, and resilience to help propel us forward, we’ll offer unrivalled personal development, a wealth of opportunities to learn, experience new things, and pursue new careers.  If that’s you, and what you’re looking for. 

We’d love you to be part of our future.

Why this job matters

We are seeking a highly skilled and experienced Senior Network Engineer to lead the design, implementation, and support of enterprise-scale network infrastructure. This role blends hands-on engineering with strategic design and operational delivery, operational support, both on-prem and cloud-based environments.

You will be responsible for architecting secure, scalable, and resilient network solutions that meet business and security requirements, while collaborating across multidisciplinary teams to ensure seamless service delivery.

What you’ll be doing – your accountabilities

The skills you’ll need to succeed

·        Design, configure, and maintain enterprise scale LAN, WAN, and hybrid cloud networks (AWS/Azure).

·        Implement and manage network services including VPNs, VLANs, QoS, DNS, DHCP, ACI and Evpn and segmentation.

·        Deploy and support enterprise-grade firewalls, routers, switches, and load balancers.

·        Collaborate with security teams to enforce access controls and ensure network compliance.

·        Troubleshoot complex network issues and perform root cause analysis.

·        Monitor network performance, conduct capacity planning, and optimize for reliability.

·        Document network architecture, configurations, and failover strategies.

·        Ensure alignment with IT policies, audit requirements, and industry best practices.

·         

·        Keep abreast of relevant technologies in the area -Reading, attending briefings and talks. 

Advantageous:

• Experience with enterprise-scale on-prem virtualisation (VMware)
• Experience with cloud networking (AWS, Azure, hybrid environments).
• Familiarity with SD-WAN, network automation, and infrastructure-as-code.
• Knowledge of Cisco, Juniper, Palo Alto, or other enterprise networking platforms.
• Exposure to monitoring tools (e.g., SolarWinds, PRTG, NetFlow).
• Strong documentation and diagramming skills (e.g., Visio, Lucidchart).

Essential:

• Cisco Certified Network Professional (CCNP) or equivalent experience (CCNA minimum).

• Strong expertise in switching, routing, firewalling, wireless networks, and network security.

• Proven experience delivering complex network solutions within time, cost, and quality targets.

• Ability to dissect and resolve technical problems through structured analysis.

• Experience building effective partnerships across diverse teams and technologies.

• Awareness of industry trends and ability to align network strategy with broader business goals.

• Ability to provide – on call, as a service to the business as part of a team

Leadership accountabilities

Experience you’d be expected to have

·        Owning outcomes

·        Delivering for the customer

·        Building for the future

Mandatory

·        5+ years of engineering experience in delivering Enterprise Scale Networking topology, design, build and support.

Advantageous

·        Bachelor’s/Master’s degree in Computer Science, Information Systems, Engineering, or other related fields

Key decisions

The BT way

·        Decisions on how to design, build and operate enterprise scale networking

·        Decide on new ways of working to drive business agility and meet customer business promises.

Compliance with all BT policies is mandatory and applies to all BT employees. Policies can be accessed via the Policy Portaland should be adhered to in-line with Standards of Behaviour Policy & Procedure and the Being trusted: our code.