Test Analyst - Core Voice Services

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Summary: Location: Slough. Job Family: Digital & Technology. Job Type: Full Time. Posted Date: 23-Sep-2025. Ref #: 69410.

We have a new role for a Core Voice Services Test Analyst to join our Core Engineering team based from our Slough Test-Lab. The Core Voice Services Test Analyst is responsible for supporting the upgrades into VMO2 Core Test-Lab. Co-ordinating with the vendor to ensure the provision of documentation and software into the lab is consistent. The role involves validating software delivery through testing, ensuring dependable delivery into live network. Working to ensuring the stability of the test environment as well as supporting fault tracking with the wider Core Voice team.

Key responsibilities

• To witness or review Supplier Quality Acceptance Testing as appropriate. Providing support to review vendor Release Notes and MOPs.
• Planning, executing and recording Element Acceptance Testing within the test environment, or on a single element in the live network. Support production of Test Strategy, creating Test Cases exiting with TER.
• Providing support to arrange, execute and record the FOA (First Office Application) of a release into the live network. Coordinating with PM or operations as required to ensure CRQ and all in place to proceed.
• To perform build, support and maintenance activities on the VMO2 Test-Bed Circuit Core model, including interfaces and data build.
• Raising faults into vendors fault tracking system, tracking these and supporting where able to resolution.
• Attending, contributing and providing support to Vendor Problem Review Meetings (PRMs).

What you’ll need

• A good understanding and appreciation for the cellular networks and networking principles (IMS, 5G, 4G, UMTS, GSM, IMS) including protocols and services especially MTAS, CSCF, PCRF.
• Knowledge and practical experience of network, signalling & protocol monitoring and management tools (Empirix).
• Investigating issues/faults during testing phases and support these through to resolution.
• Analytical skills and problem solving are needed to understand and progress fault analysis with support from senior team members.
• Good record in production of accurate and complete technical requirements specifications.

What we offer

Accessible, inclusive and equitable for all. Virgin Media O2 is an equal opportunities employer and we\’re working hard to remove bias and barriers for our people and candidates. We build equity and inclusion into everything we do, from the policies we craft to the relationships we shape. We support and encourage you to be your authentic self throughout your application journey with us.

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 technical and competency based 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, therefore we may bring the closing date forward. We encourage all interested applicants to apply as soon as possible. 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 need a financial probity check. Your recruiter can provide you with more information if needed.