Mobile Core Design Specialist - Signalling and Roaming

Locations: Bristol or London

Working Style: 3 days a week in office, 2 from anywhere

Why this job matters

role sits within the Signalling and Roaming Design Team, which is part of the Mobile Core Design department within the Mobile directorate of Networks. This is a major enabling Directorate within Technology, with responsibility for network design, capacity planning, strategy decisions, site and infrastructure.

The Signalling and Roaming Design Team has responsibility for signalling functions in the core network, including STP, DSR, SCP, NRF, Signalling Firewall systems which are key components in providing Voice, Data and Value Added services including 4G, 5G, WiFi, and International roaming and their associated network management systems.

You'll be part of that picture, being a design lead actively analysing and making decisions, closely working with other teams within Networks and Mobile Core Design, to Design and deliver solutions within the Mobile signalling core, thus enabling services for the customers of EE, BT, and multiple other brands.  The responsibilities of the role are highly challenging and complex, but the learnings gained and the rewards achieved, are extremely technically and personally satisfyingand this team has built the best performing network in the UK since 2013, and was first to launch both 4G and 5G.  We are specialists in this industry so other business units and departments will come to us for advice and consultancy regarding what is possible - a space that is always expanding

What you’ll be doing

• Deliver deep technical and repeatable Signalling Design solutions that achieve customer requirements driving positive outcomes​.
• Guide partnerships with business and operational stakeholders to ensure the successful transition from Design through Delivery and to Operational Acceptance.
• Implement robust recommendations, proposals and scope of work documents (including creating and maintaining robust Design documentation) for group engagements while also identifying critical dependencies and gaps​.
• Contribute to thought leadership and provide advice on a specific set of technologies to help senior leadership shape the long-term direction of solution architecture strategies​.
• Deliver complex, strategic initiatives that are a part of the company's overall commercial Strategy.
• Champions, continuously develops in role as a domain expert and shares with team knowledge on emerging trends and changes in solution architecture.

What you'll bring

• 10% on target bonus
• BT Pension scheme, minimum 5% Employee contribution, BT contribution 10%
• Life Assurance Cover
• Exclusive colleague discounts on our latest and greatest BT broadband packages, BT TV with TNT Sports and NOW Entertainment
• 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
• EE Broadband – from £10/month for 150Mb and £20 for 900Mb – lower than any other provider.
• EE Mobile – Save 50% on Mobile & SIM-only plans or pay just £10/month for an EE SIM.
• EE TV – Enjoy premium content like Netflix and TNT Sports, with the flexibility to swap packages monthly, starting from just £10/month.
• Combine Broadband, TV, and Mobile from just £30/month and unlock extra savings when you take both Broadband and Mobile.

What you'll bring (Skills/Experience)

Mandatory

• Solution Architecture:  Strong track record of designing and planning mobile core network solutions in the role of a designer or planner of business-critical, high-availability / high-throughput systems and networks;
• Solution Design:  Excellent knowledge and experience of Mobile Core Network elements and protocols in the areas of (i) Core network Signalling nodes including STP, Diameter DRA, SIP Session routers, 5G SBA SCP/SEPP; (ii)  Design or planning of Signalling and voice interconnects, MVNO networks and services, International roaming, and other value added services;
• Product Roadmapping:  Experience of working and managing relationships with suppliers and third-parties, of product/feature selection, and of delivering those products into a production environment;
• Requirements Gathering:  Ability to analyse requirements and clearly document and articulate recommended solutions.
• Technology Deployment:  Ability to manage interfaces with the Network Control, Delivery, Project, Security and Operational communities, to ensure the successful transition from Design through Delivery and to Operational Acceptance.
• Performance Monitoring:  Experience of producing network traffic and system reports, and input into regular into the domain reporting.

Nice to have

• Cloud Computing: Knowledge and experience of Design and deployment of Mobile signalling solutions in Cloud environments.
• Member of a professional body e.g. Institution of Engineering and Technology.
• Ideally, a degree in a relevant engineering discipline would be useful to this role.

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.