Job Description

Network Engineering Specialist

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Job Req ID: 53471
Posting Date: 23 Dec 2025
Function: Engineering
Unit: Networks
Location:
One Braham (4140), London, United Kingdom
Salary: .

The skills you'll need

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Troubleshooting
Escalation Management
Issue Resolution
Network Delivery
Health & Safety
Vendor Management
Network Security
Network Testing
Network Configuration
Technical Documentation
Network Integration
Network Implementation
Network Design
Incident Management
Event Planning
Decision Making
Growth Mindset
Inclusive Leadership

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.

Why This Job Matters

Our Networks unit is the engine behind BT's connectivity. We design, build, and run the networks and technology platforms that BT and our customers rely on every day. From fibre and mobile to Wi-Fi and core networks, BT leads the world in converged, automated, and programmable network technologies. By driving network strategy, transformation, and modernisation of mobile and fixed assets, we enable cutting-edge services and experiences for Enterprise, Global, and Consumer customers. This role is key to shaping the future of BT's mobile core IP network, ensuring it meets the highest standards of performance, security, and innovation.

Responsibilities

Define and agree IP network designs for the mobile core, aligned with architecture, operational, and security requirements. Produce high-quality design documentation (High-Level and Low-Level Designs). Liaise with vendors and suppliers to ensure solution delivery and roadmap alignment. Propose improvements to processes and technologies. Provide technical consultancy at platform or solution level to internal teams and stakeholders. Define test requirements and strategies for new designs. Maintain standards for Mobile Core IP network infrastructure. Drive implementation of core and cloud infrastructure security to manage risks. Oversee system design, build, testing, validation, maintenance, and ongoing support. Implement new and enhanced network technologies for enterprise and remote connectivity. Manage installation, testing, and setup of network hardware and software (firewalls, routers, switches, monitoring tools). Execute engineering efforts to ensure currency and supportability of networking technology. Contribute to technology lifecycle planning, roadmaps, and Network Health Assessments. Deliver documentation, knowledge transfer, and training for new solutions. Support clients with data protection and cloud capabilities. Provide escalation support for global network issues. Mentor other engineering professionals and share knowledge on emerging trends.

Skills You'll Need to Succeed

Network Implementation & Delivery Network Design & Configuration Network Security & Integration Troubleshooting & Issue Resolution Network Testing & Incident Management Vendor Management Escalation Management Technical Documentation Growth Mindset & Inclusive Leadership Decision Making

Experience You'd Be Expected to Have

Mandatory:

IP networking experience in a service provider environment Hands-on experience configuring, managing, and troubleshooting Check Point and Fortinet firewalls in enterprise environments

Preferred:

Ability to build collaborative business relationships and negotiate effectively Experience coaching and supporting team development Mobile Core Network knowledge Advanced knowledge of Check Point Security Management Familiarity with Fortinet Security Fabric Exposure to cloud security integrations

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 , please apply anyway - you may just be the right candidate for this or other roles in our wider team.