Senior Network Engineer

Job Description

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.

This role is hybrid (3 days in office) & can be based in either Manchester or Birmingham or London

What you’ll be doing

• 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).

Skills Required for the Role

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

Experience Required for the Role

• 5+ years of engineering experience in delivering Enterprise Scale Networking topology, design, build and support.
• CCNP or equivalent experience (CCNA minimum).

About us

BT Group was the world’s first telco and our heritage in the sector is unrivalled. As home to several of the UK’s most recognised and cherished brands – BT, EE, Openreach and Plusnet, we have always played a critical role in creating the future, and we have reached an inflection point in the transformation of our business.

Over the next two years, we will complete the UK’s largest and most successful digital infrastructure project – connecting more than 25 million premises to full fibre broadband. Together with our heavy investment in 5G, we play a central role in revolutionising how people connect with each other.

While we are through the most capital-intensive phase of our fibre investment, meaning we can reward our shareholders for their commitment and patience, we are absolutely focused on how we organise ourselves in the best way to serve our customers in the years to come. This includes radical simplification of systems, structures, and processes on a huge scale. Together with our application of AI and technology, we are on a path to creating the UK’s best telco, reimagining the customer experience and relationship with one of this country’s biggest infrastructure companies.

Change on the scale we will all experience in the coming years is unprecedented. BT Group is committed to being the driving force behind improving connectivity for millions and there has never been a more exciting time to join a company and leadership team with the skills, experience, creativity, and passion to take this company into a new era.

A FEW POINTS TO NOTE:

Although these roles are listed as full-time, if you’re a job share partnership, work reduced hours, or any other way of working flexibly, please still get in touch.

We will also offer reasonable adjustments for the selection process if required, so please do not hesitate to inform us.

DON'T MEET EVERY SINGLE REQUIREMENT?

Studies have shown that women and people who are disabled, LGBTQ+, neurodiverse or from ethnic minority backgrounds are less likely to apply for jobs unless they meet every single qualification and criteria. We're committed to building a diverse, inclusive, and authentic workplace where everyone can be their best, so if you're excited about this role but your past experience doesn't align perfectly with every requirement on the Job Description, please apply anyway - you may just be the right candidate for this or other roles in our wider team.