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For Companies At a Glance
- Tasks: Design and steer signalling projects for core voice networks, ensuring customer-centric outcomes.
- Company: Join Virgin Media O2, the UK's fastest broadband network and a beloved mobile brand.
- Benefits: Enjoy a fantastic reward package with flexible benefits to support you and your loved ones.
- Why this job: Be part of a diverse team that values inclusion and empowers you to be your authentic self.
- Qualifications: Experience in cellular networks and strong analytical skills are essential for this role.
- Other info: This is an entry-level full-time position with opportunities for growth and development.
The predicted salary is between 36000 - 60000 £ per year.
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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Core Voice Signalling Designer employer: Virgin Media O2
Contact Detail:
Virgin Media O2 Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Core Voice Signalling Designer
✨Tip Number 1
Familiarise yourself with the latest trends and technologies in cellular networks, especially 2G, 3G, 4G, and IMS. This knowledge will not only help you during interviews but also demonstrate your commitment to staying updated in a fast-evolving field.
✨Tip Number 2
Network with professionals in the telecommunications industry, particularly those who work with signalling systems and protocols. Engaging in discussions or attending relevant events can provide insights and potentially lead to referrals.
✨Tip Number 3
Prepare to discuss specific projects where you've successfully collaborated with multi-disciplined teams. Highlighting your teamwork skills and ability to communicate complex technical concepts will set you apart from other candidates.
✨Tip Number 4
Showcase your analytical skills by preparing examples of how you've navigated conflicting requirements in past projects. Being able to articulate your problem-solving process will impress interviewers and demonstrate your practical judgement.
We think you need these skills to ace Core Voice Signalling Designer
Some tips for your application 🫡
Understand the Role: Before applying, make sure you fully understand the responsibilities and requirements of the Core Voice Signalling Designer position. Familiarise yourself with the technologies mentioned, such as SS7, SIP, and Diameter, to demonstrate your knowledge in your application.
Tailor Your CV: Customise your CV to highlight relevant experience in cellular networks and signalling systems. Use specific examples from your past work that align with the job description, showcasing your analytical skills and ability to work independently.
Craft a Compelling Cover Letter: Write a cover letter that not only outlines your qualifications but also reflects your enthusiasm for the role and the company. Mention how your skills can contribute to Virgin Media O2's goals and values, particularly in customer-centric design.
Proofread Your Application: Before submitting, carefully proofread your CV and cover letter for any spelling or grammatical errors. A polished application reflects attention to detail, which is crucial for a design role. Consider asking a friend or mentor to review it as well.
How to prepare for a job interview at Virgin Media O2
✨Understand the Technical Requirements
Make sure you have a solid grasp of cellular networks and signalling systems like SS7, SIP, and Diameter. Brush up on your knowledge of networking principles and be ready to discuss how these technologies apply to the role.
✨Showcase Your Analytical Skills
Prepare to demonstrate your analytical skills during the interview. Be ready to discuss past experiences where you navigated complex requirements and found effective solutions, as this is crucial for the Core Voice Signalling Designer position.
✨Communicate Clearly
Since excellent communication skills are essential, practice explaining technical concepts in simple terms. This will help you connect with the interviewers and show that you can effectively collaborate with multi-disciplined teams.
✨Be Ready for Competency Questions
Expect competency-based questions that assess your problem-solving abilities and teamwork. Prepare examples from your previous work or projects that highlight your self-motivation and ability to meet tight deadlines.
