Core Voice Signalling Designer

About the role

Virgin Media O₂ is looking for a Core Voice Signalling Designer to join its Signalling Design team. You will shape and steer design across core voice network platforms, ensuring solutions are robust, scalable and customer‑focused.

Key responsibilities

• Design and steer signalling‑related projects, guiding project teams to optimal delivery outcomes.
• Produce high‑level and low‑level technical design documentation.
• Lead design requirements, influence vendor outcomes and support automated testing initiatives.
• Ensure designs meet performance, security and capacity needs across legacy and next‑generation networks.
• Work across a broad range of signalling technologies, contributing to both legacy and next‑generation network evolution.

Required profile

• Proven experience in design and configuration of Ericsson IP‑STP and DSC signalling products.
• Trusted design authority capable of delivering robust, scalable, customer‑focused solutions.
• Ability to collaborate with cross‑functional project teams and vendors.
• Strong focus on performance, security and capacity considerations.

Required skills

• Ericsson IP‑STP
• Ericsson DSC
• Signalling design
• Network design
• Technical design documentation
• Automated testing

What we offer

• Flexible‑first working model with hybrid collaboration opportunities.
• Inclusive and equitable workplace recognised as a top employer.
• Opportunities to work on next‑generation 5G, satellite‑supported solutions and other innovative projects.