Network Engineering Specialist

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.

The Skills You’ll Need

• 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

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