Network Design Specialist, Mobile IP

Job Description

Recruiter: Luke Byrne

Career Grade: D

Internal Closing Date: 25/6/26

Location: London or Bristol

About the role

Our internal Networks unit is responsible for designing, building and running the networks and technology platforms that BT, and our customers, rely on.
Across our fibre, mobile, Wi-Fi and core networks, BT is a connectivity powerhouse, leading the world in the adoption of converged, automated, programmable network technologies.
Bringing together network strategy, transformation, and the modernisation of our mobile and fixed network assets - along with direct partnering with Enterprise, Global and Consumer on leading edge, converged services and experiences – our Networks division designs, builds and runs the technology platforms that BT, and our customers, rely upon every day.

What you’ll be doing

• Define and agree IP network designs for the mobile core, in line with architecture and with operational and security requirements.
• Produce high quality design documentation; High Level and Low Level Designs.
• Liaise with vendors and suppliers to ensure delivery of solutions and alignment of roadmaps..
• Propose improvements to processes and technologies used.
• Provide technical consultancy at a platform and/or overall solution level to other teams and business units – this could be to any stakeholder within the business.
• Define test requirements and test strategy for new designs.
• Maintains standards for Mobile Core IP network infrastructure.
• Drives the implementation of core and cloud infrastructure security to manage risks and exposure.
• Undertakes routine daily activities and is accountable for system design, build, testing, validation, maintenance, and ongoing support of all network infrastructure components.
• Undertakes the implementation of new and enhanced network technology that aligns to customers’ strategic direction for enterprise and remote site connectivity.
• Manages the installation, testing, and setup of new network hardware both physical and virtual (firewalls, routers, switching, monitoring) hardware and software.
• Executes engineering efforts to ensue currency and supportability of networking technology.
• Participates in technology lifecycle planning, including contributing to the development of the technology roadmaps and Network Health Assessments.
• Delivers the required documentation, knowledge transfer and training to successfully land new solutions into the support organisation.
• Delivers support for clients with data protection and overarching cloud capabilities.
• Drives the implementation of core and cloud infrastructure security to manage risks and exposure.
• Provides support for problem escalations from the global network support organisation.
• Drives impact with a range of customer, operational, project or service activities within the Network Engineering team and other related teams.
• Mentors other Engineering professionals, helping to improve the team’s abilities by acting as a technical resource.
• Champions, continuously develops and shares with team knowledge on emerging trends and changes in Network Engineering.

Essential Skills / Experience

• IP networking experience in a service provider environment
• Network Implementation
• Network Delivery
• Health & Safety
• Vendor Management
• Network Security
• Network Configuration
• Troubleshooting
• Network Integration
• Network Design
• Issue Resolution
• Network Testing
• Incident Management
• Escalation Management
• Event Planning
• Technical Documentation

Desirable Skills / Experience

• Ability to build business relationships, negotiating what works for both parties, in a collaborative approach.
• As someone in a more senior grade, you’ll have experience of coaching and able to support the development of other team members.
• Mobile Core Network knowledge

Our Package

• 10% on target bonus
• BT Pension scheme, minimum 5% Employee contribution, BT contribution 10%
• From January 2025, equal family leave: receive 18 weeks at full pay, 8 weeks at half pay and 26 weeks at the statutory rate. It’s for all parents, no matter how your family is made up.
• Enhanced women’s health support: including help with menopause symptoms, cancer screenings, period care and more.
• 25 days annual leave (not including bank holidays), increasing with service
• 24/7 private virtual GP appointments for UK colleagues
• 2 weeks carer’s leave
• World-class training and development opportunities
• Option to join BT Shares Saving schemes

BT Group is the UK’s leading communications group and the holding company behind some of the country’s most recognised brands – including BT, EE, Openreach and Plusnet. Our purpose is as simple as it is ambitious: we connect for good. Our customers include consumers, small, medium and large businesses, public sector organisations and other communications providers.

BT Group’s role is about setting direction, unlocking value and creating the conditions for our brands and businesses to thrive.

Having come through the most capital-intensive phase of our fibre investment, our focus now is on what comes next – simplifying how we operate, using technology and AI to work smarter, and organising ourselves to serve customers better and grow sustainably. Group teams shape strategy, policy, brand, capital allocation and transformation, helping the whole organisation perform at its best.

We have a singular culture that unites all our people: we are customer-first challengers, who are committed, clear and connected. These behaviours unite us as one team to deliver for our colleagues, our customers, our stakeholders and the country. Joining BT Group means working at the heart of a business that matters to the UK, with the opportunity to shape decisions, influence outcomes and help set the future course of one of the country’s most important companies.