Virgin Media O2
Core Voice Signalling Designer
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Summary
Location
Birmingham, Leeds, London, Manchester, Peterborough, Reading
Job Family
Digital & Technology
Job Type
Full Time
Posted Date
10-Jul-2026
Ref #
74491
Role Description
We have a great new role for a Core Voice Signalling Designer to join our Signalling Design team.
- You will help design and steer designs for signalling-related projects, directing project teams to ensure optimal delivery outcomes.
- You will play a key role in shaping and steering design across core voice network platforms. Reporting into the Subscriber Management and Signalling Engineering Manager, you will act as a trusted design authority within project teams to ensure solutions are robust, scalable, and customer focused.
- You will work across a broad range of signalling technologies, contributing to both legacy and next-generation network evolution.
- You will lead on design requirements, influence vendor outcomes, and support automated testing initiatives, all while ensuring designs meet performance, security, and capacity needs across the network.
- You will be tasked with producing high and low-level technical design documentation.
Who We Are
At Virgin Media O₂, we connect people to the moments that matter most. Virgin Media leads the UK for broadband reliability, speed, and overall performance, while O₂ keeps people connected on the move with award-winning coverage.
- We’re also proud to be named one of the Financial Times Top 500 Best Employers for 2026, based on one of the UK’s largest employee satisfaction surveys.
- Join us and you’ll be part of a team that stays curious, positive, and focused on making life easier for our customers and each other.
- We’re investing in the future of connectivity, from expanding next-generation 5G to exploring satellite-supported solutions that help reach rural communities and hard-to-connect places.
- You’ll work with people who back good ideas and give you plenty of room to grow.
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Our Ways of Working
- We’re a flexible-first organisation, because we know people do their best work when they have choice and clarity.
- To support meaningful collaboration, we ask everyone to spend at least eight days a month connecting with each other in person.
- That doesn’t just mean time in the office – it could be team meetings, offsites, volunteering days, cross-functional projects, or away days.
- What matters is making those moments count – so when we come together, it benefits everyone.
The Must Haves
- Ericsson IP STP design and configuration experience
- Ericsson DSC design and configuration experience
- Experience producing high and low-level technical design documentation
- Strong working knowledge of Ericsson command structures and documentation
- Experience across cellular networks including 2G, 3G, 4G, and IMS
- Proven expertise in signalling protocols such as SS7, SIGTRAN, SIP, Diameter, and MAP
The Other Stuff We Are Looking For
- Knowledge of capacity modelling and network performance considerations
- Exposure to vendor engagement, including SOR and SOW reviews
- Experience contributing to automated testing approaches within telecoms environments
- Strong collaboration and communication skills across technical and non-technical audiences
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What's in it for You
We know life isn’t just about work, so our benefits are built to support you in the moments that matter.
- Bupa healthcare
- Wellbeing support
- Life cover
- Pension
- Generous holiday – plus your birthday off
- Optional electric vehicle lease and Cycle2Work schemes
- Dental insurance
- Neurodiversity assessments
- Brilliant discounts on broadband, TV, and mobile
- Access to the Virgin Family platform and the O₂ Priority app, with exclusive rewards, experiences, and chances to attend events at The O₂ and beyond.
Next Steps
If this feels like a place where you can belong, we’d love to see what you can do. Once you apply, the next steps might include:
- A call with a recruiter
- A video interview
- An interview with the hiring manager
- A task or assessment
We’ll also ask about any adjustments you might need, and we’ll do our best to make them happen. We review applications and interview throughout the advert window, so it’s worth applying sooner rather than later. If you’re offered the role, the offer will be subject to background checks, including a criminal record check and, for some roles, a financial background check.
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