Overview
Join to apply for the Core Voice Signalling Designer role at Virgin Media O2.
Location: Birmingham, Leeds, London, Manchester, Peterborough, Reading
Job Family: Digital & Technology
Job Type: Full Time
Posted Date: 05-Sep-2025
Ref #: 68455
Summary
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. The Signalling Design team drives design changes across all impacted network functions as part of a project team, ensuring the overall design is customer-centric, meets customer requirements, and is robust. We are looking for a candidate experienced in the design and configuration of Ericsson IP-STP and DSC signalling products. You will work independently, escalating issues to the Signalling Engineering Manager as dictated by complexity and priority.
Key responsibilities
* Working within the Design team to produce the Signalling Design requirements pertaining to core voice network platforms. This role encompasses the support of service designs on the Voice Core network, including IP STP, DSC (DRA, DEA), and IMS/legacy core voice network nodes.
* Helping with the development of automated test capabilities for both 5GSA and legacy nodes. Working with the Core Test team to develop automated testing for call flows to speed up all aspects of testing.
* Producing high and low level design documents, including capacity dimensioning and modelling with attention to surrounding network elements. All designs produced are to meet fraud and security requirements and liaison with vendors and TSA as required.
Required qualifications and experience
* Ericsson IP-STP design and configuration experience
* Ericsson DSC design and configuration experience
* Working knowledge of the command structure and ability to navigate Ericsson documentation for both platforms
* Good experience of cellular networks (2G, 3G, 4G, and IMS), networking principles, and related signalling systems and protocols (SS7, SIGTRAN, SIP, Diameter, MAP)
* Detailed understanding of technology standards, traffic, switching, and radio theory/principles
* Strong analytical skills and practical judgement to navigate complex requirements and deliver satisfactory business solutions
The other things we are looking for
* An enthusiastic, self-motivated team player with drive to succeed
* Excellent communication skills with the ability to explain technical concepts and design principles
* A strong collaborator who can work with multi-disciplined internal teams and external customers
* Self-discipline to work independently and meet tight deadlines
What's in it for you
Virgin Media O2 aims to celebrate our people and provide a culture that empowers everyone to bring their best selves to work. A competitive reward package and benefits are available to support you and your loved ones.
Next steps
If we think you could belong, we would like to learn more about you and your experience. If successful, the next steps are likely to include a competency interview. When you apply, let us know if you need adjustments to support the recruitment process. Applications may close early as the advert progresses. All roles require background checks and, where applicable, a financial probity check.
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