Core Voice Signalling Designer

Overview

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

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 close attention to surrounding network elements. All designs produced are to meet fraud and security requirements and liaison with vendors and TSA as required.

Must haves

• 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 practical judgement to navigate complex and conflicting requirements to reach a satisfactory business solution.

The other stuff 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-disciplined internal teams and external customers
• Ability to work alone with strong self-discipline to meet tight deadlines

What’s in it for you

Our goal is to celebrate our people and create a culture that empowers everyone to bring the best versions of themselves to work every day. We offer a bumper reward package with benefits designed to support you and your loved ones.

Next steps

If we feel like a place where you can belong, we’d love to learn more about you and your experience. If successful, the next steps are likely to include a competency interview. When applying, please indicate any adjustments you might need to support the recruitment process.

Please note: Applications will be reviewed, and interviews conducted throughout the duration of this advert, so the closing date may move forward. 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 Virgin Media O2.

Seniority level

• Mid-Senior level

Employment type

• Full-time

Job function

• Design, Art/Creative, and Information Technology
• Industries
• Telecommunications