Press Tab to Move to Skip to Content Link

Select how often (in days) to receive an alert:

Technical Test Specialist

Posting Date: 2 Jul 2025

Function: Software Engineering

Unit: Networks

Location:

Assembly, Bristol, United Kingdom

All Locations: Bristol or London

Working Style: 3 days a week in office, 2 days from anywhere

We are looking for a Technical Test Specialist with strong technical experience with LTE/WiFi/Circuit Switched Voice & Messaging architecture and E2E call flows to join our BT's Mobile Testing team.

The ideal candidate should have strong technical experience and analytical understanding in the following areas.

• Experience should include full test lifecycle - from requirement analysis through to test execution and analysis.
• A detailed understanding of interfaces and protocols associated with the below is also required.

What you’ll be doing

• Be able to utilise a broad knowledge of testing approaches, practices & techniques to engage projects, programmes, stakeholders, etc., to create the Test Architecture elements of the overall solution design.
• Support Delivery leads, Programme Test Managers and Test Managers in achieving their strategic goals for the project/programme/activity by providing technical support to them and the test delivery teams.
• Monitor the effectiveness of testing methodologies and tools to drive improvements through insights gained via analysis at all stages of the e2e delivery lifecycle.
• Identify what testing tools and technologies can be implemented, aligning with those already used across the broader design and development functions and those being developed by our strategic technology partners.
• Work with Test Automation teams to design and develop the test automation framework as an intrinsic part of the solution design. To drive automation and increase our automation footprint over successive deliveries.
• Work with the Environment delivery and support teams to ensure Mobile NW and IT environments keep up with testing tools and delivery requirements. Help define and drive an Environment strategy that caters for live reflective and future releases in the lab.
• Provide technical know-how, documentation and training to test and other business functions. Train and help learning within the team by technically coaching members of the Mobile core Test team.
• Stay up to speed on process, practice and technology developments to ensure they are adopted to enhance the solutions applied to technical and business requirements.
• Ability to work with internal and external design and development teams/suppliers to assess and implement new technologies/ delivery methodologies to drive continuous improvement and efficiency e.g., CICD, Agile, Waterfall

What you'll bring

Mandatory:

• 5GSA Architecture and platform knowledge- AMF, SMF, UPF, SBA, HTTP2 API Services
• Evolved Packet Core (3GPP LTE) - MME, HSS, SGW, PGW, ePDG
• Monitoring, Tracing & Test Tools -Wireshark, Netscout, Jira, Confluence, Gitlab
• Automation test frameworks and associated tools like SEGRON, Spirent, Landslide, Jira etc.
• Mobile and scripting knowledge preferably java, python

Nice to have

• Authentication, Policy Control & Charging/Billing Mechanisms- PCF, OCS, CDR, Radius, AAA, One NDS, HSS, DSR, LBS, EIR, Mobile IP
• Experience with Ericsson CNOM (Core Network Operations Manager)
• 10% on target bonus
• Life Assurance Cover
• Exclusive colleague discounts on our latest and greatest BT broadband packages, BT TV with TNT Sports and NOW Entertainment
• From January 2025, equal family leave: receive 18 weeks at full pay, 8 weeks at half pay and 26 weeks at the statutory rate. It’s for all parents, no matter how your family is made up.
• Enhanced women’s health support: including help with menopause symptoms, cancer screenings, period care and more.
• 25 days annual leave (not including bank holidays), increasing with service
• 24/7 private virtual GP appointments for UK colleagues
• 2 weeks carer’s leave
• World-class training and development opportunities
• Option to join BT Shares Saving schemes

About us

BT Group was the world’s first telco and our heritage in the sector is unrivalled. As home to several of the UK’s most recognised and cherished brands – BT, EE, Openreach and Plusnet, we have always played a critical role in creating the future, and we have reached an inflection point in the transformation of our business.

Over the next two years, we will complete the UK’s largest and most successful digital infrastructure project – connecting more than 25 million premises to full fibre broadband. Together with our heavy investment in 5G, we play a central role in revolutionising how people connect with each other.

While we are through the most capital-intensive phase of our fibre investment, meaning we can reward our shareholders for their commitment and patience, we are absolutely focused on how we organise ourselves in the best way to serve our customers in the years to come. This includes radical simplification of systems, structures, and processes on a huge scale. Together with our application of AI and technology, we are on a path to creating the UK’s best telco, reimagining the customer experience and relationship with one of this country’s biggest infrastructure companies.

Change on the scale we will all experience in the coming years is unprecedented. BT Group is committed to being the driving force behind improving connectivity for millions and there has never been a more exciting time to join a company and leadership team with the skills, experience, creativity, and passion to take this company into a new era.

Although these roles are listed as full-time, if you’re a job share partnership, work reduced hours, or any other way of working flexibly, please still get in touch.

We will also offer reasonable adjustments for the selection process if required, so please do not hesitate to inform us.

Studies have shown that women and people who are disabled, LGBTQ+, neurodiverse or from ethnic minority backgrounds are less likely to apply for jobs unless they meet every single qualification and criteria. We're committed to building a diverse, inclusive, and authentic workplace where everyone can be their best, so if you're excited about this role but your past experience doesn't align perfectly with every requirement on the Job Description, please apply anyway - you may just be the right candidate for this or other roles in our wider team.