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.
* Help with the development of automated test capabilities for both 5GSA and legacy nodes. Work with the Core Test team to develop automated testing for call flows to speed up all aspects of testing.
* Produce high and low level design documents, including capacity dimensioning and modelling with close attention to surrounding network elements. All designs must meet fraud and security requirements and liaise with vendors and TSA as required.
Requirements / Qualifications
* Ericsson IP-STP design and configuration experience.
* Ericsson DSC design and configuration experience.
* Working knowledge of the command structure and the Ericsson documentation for both platforms mentioned above.
* Good experience of cellular networks (2G, 3G, 4G, and IMS), networking principles, and associated signalling systems and protocols, including SS7, SIGTRAN, SIP, Diameter, and MAP.
* Detailed understanding of technology standards, traffic, switching, and radio theory/principles.
* Strong analytical skills and sound practical judgement; ability to understand complex and conflicting requirements to reach a satisfactory business solution.
Other attributes we are looking for
* An enthusiastic, self-motivated team player with drive to succeed.
* Excellent communications skills with the ability to interface and explain detailed technical concepts and design principles.
* A strong collaborator, able to work with multi-disciplinary internal teams and external customers.
* You will often be asked to work alone, so strong self-discipline is a must to meet tight deadlines.
What’s in it for you
Our goal is to celebrate our people, their lives and everything in-between. We aim to create a culture that empowers everyone to bring the best versions of themselves to work each and every day. We believe the most inclusive and diverse culture makes for a better business and a brighter world.
Working at Virgin Media O2, you get a bumper reward package bursting with benefits, and loads of extras you can add if you’d like to. These are designed to support both you and your loved ones, making sure that you’re covered no matter what life throws your way.
Next steps
If we feel like a place where you can belong, we'd love to learn more about you as a person and your experience to date. Once you've submitted an application the next steps of the process, if successful, are likely to include a competency interview. When you apply, you'll be asked about any adjustments you might need to support the recruitment process. Let us know, and we'll discuss it with you.
Please note: Applications will be reviewed, and interviews conducted throughout the duration of this advert; we may bring the closing date forward. If you’re offered a job with us, it will be conditional, based on the passing of background checks. All roles require a criminal record check and some roles require a financial probity check. Your recruiter can provide more information if needed.
Thanks for your patience and for showing an interest in joining the Virgin Media O2 family.
Seniority level
* Mid-Senior level
Employment type
* Full-time
Job function
* Design, Art/Creative, and Information Technology
* Industries: Telecommunications
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