Network Design Specialist, Mobile IP

Job Description

Recruiter: Trevor Newman

Career Grade: D

Internal Closing Date: 4/03/2026

Location: Bristol or London

Why this job matters

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.
• Participates in technology lifecycle planning, including contributing to the development of the technology roadmaps and Network Health Assessments.
• 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.

The skills you'll need

• IP networking experience in a service provider environment
• Network Implementation, Network Delivery
• Mobile Core Network knowledge
• Ability to build business relationships, negotiating what works for both parties, in a collaborative approach.
• Vendor Management
• Network Security
• Network Configuration
• Troubleshooting
• Network Integration
• Network Design
• Issue Resolution
• Network Testing
• Incident Management
• Escalation Management
• Technical Documentation
• IP networking experience in a service provider environment (desirable)

Our leadership standards

Looking in:
Leading inclusively and Safely
I inspire and build trust through self-awareness, honesty and integrity.
Owning outcomes
I take the right decisions that benefit the broader organisation.

Looking out:
Delivering for the customer
I execute brilliantly on clear priorities that add value to our customers and the wider business.
Commercially savvy
I demonstrate strong commercial focus, bringing an external perspective to decision-making.

Looking to the future:
Growth mindset
I experiment and identify opportunities for growth for both myself and the organisation.
Building for the future
I build diverse future-ready teams where all individuals can be at their best.

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.

BENEFITS

• Annual On target bonus 10% (personal and company multipliers)
• BT Pension scheme; minimum 5% employee contribution, BT contribution 10%
• Life Assurance
• Direct share scheme
• Exclusive colleague discounts on our latest and greatest BT broadband packages
• 50% off EE mobile pay monthly or SIM only plans and 50% discount for friends and family on EE SIM only plans
• My Discounts gives colleagues access to unbeatable savings on everyday purchases at hundreds of retailers
• Discounted EE TV including TNT Sport and the NOW Entertainment membership
• Great support for working parents including pay whilst on maternity, adoptive, and paternity leave
• Option to join the Healthcare Cash Plan or other benefits such as dental insurance, gym memberships etc.
• 25 days annual leave (not including bank holidays), increasing with service with buy holiday option
• 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.
• Volunteering days so you can give back to your local community
• Brand new electric vehicle salary sacrifice arrangement, known as ‘My EV’