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Req ID: 61776

Job Function: Engineering

Posting Start Date: 25/08/2026

Posting End Date: 08/09/2026

Division: Networks

Job Location: GBR Leeds - 1 Sovereign Street

Advertised Salary: Competitive with great benefits

Recruiter: Luke Byrne

Career Grade: CLD

Internal Closing Date: Tuesday 8th Sept 2026

About the role

BT is building and operating the UK's next generation Mission Critical Services platforms, delivering secure, resilient and highly available communications capabilities that support emergency services, public safety organisations and other critical national infrastructure customers.
As an MCX Platform Specialist, you will be responsible for the operational support, performance, resilience and continuous improvement of BT's Mission Critical Services platforms. Working within a highly skilled team, you will provide technical expertise across platform operations, incident resolution, service optimisation, change implementation and lifecycle management, ensuring services meet demanding availability, security and performance requirements.
This role provides the opportunity to work with cutting-edge mission critical technologies including MCX services, VMware Telco Cloud Platform, Kubernetes and 4G/5G Core networks, helping to deliver communications services where reliability and customer trust are paramount.

What you’ll be doing

• Operate, support and maintain Mission Critical Services (MCX) platforms, ensuring high levels of availability, performance and resilience.
• Monitor platform health and service performance, proactively identifying and resolving issues before they impact customers.
• Troubleshoot and resolve complex technical issues across applications, infrastructure, virtualisation and networking domains.
• Support and manage incidents, problems and changes in accordance with operational processes and service level commitments.
• Execute platform upgrades, patches, configuration changes and new feature deployments.
• Work closely with engineering teams, vendors and customers to diagnose issues and drive permanent resolutions.
• Support the introduction of new services and capabilities through operational readiness and service acceptance activities.
• Create and maintain technical documentation, operational procedures and knowledge articles.
• Identify opportunities for service optimisation, automation and continuous improvement.
• Contribute to platform security, compliance and resilience activities.
• Participate in on-call and out-of-hours support arrangements as required.
• Act as a technical subject matter expert for Mission Critical Services platforms and supporting technologies.
• Take ownership of issues through to resolution, doing what is needed to deliver the right outcome for the customer.

Essential Skills / Experience

• Knowledge of Mission Critical Services (MCX) technologies, including MCPTT, MCData and MCVideo.
• Knowledge of 4G LTE Evolved Packet Core (EPC) and 5G Standalone (5G SA) Core technologies.
• Understanding of subscriber management, mobility, policy control, quality of service and end-to-end service troubleshooting.
• Experience working with VMware Telco Cloud Platform (TCP).
• Strong knowledge of Kubernetes and containerised applications.
• Solid understanding of Cisco networking technologies.
• Strong knowledge of IP networking fundamentals, including routing and switching.
• Experience troubleshooting complex issues across applications, containers, virtualised infrastructure and telecommunications networks.
• Experience supporting business-critical or mission-critical services.
• Familiarity with Incident, Problem and Change Management processes.

Our Package

• 10% on target bonus
• A BT Pension scheme, minimum 5% Employee contribution, BT contribution 10%
• 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.
• 25 days annual leave (not including bank holidays), increasing with service
• Huge range of flexible benefits including cycle to work, healthcare, season ticket loan
• World-class training and development opportunities
• Option to join BT Shares Saving schemes.
• Discounted broadband, mobile and TV packages
• Access to 100’s of retail discounts including the BT shop

BT Group is the UK’s leading communications group and the holding company behind some of the country’s most recognised brands – including BT, EE, Openreach and Plusnet. Our purpose is as simple as it is ambitious: we connect for good. Our customers include consumers, small, medium and large businesses, public sector organisations and other communications providers.

BT Group’s role is about setting direction, unlocking value and creating the conditions for our brands and businesses to thrive.

Having come through the most capital-intensive phase of our fibre investment, our focus now is on what comes next – simplifying how we operate, using technology and AI to work smarter, and organising ourselves to serve customers better and grow sustainably. Group teams shape strategy, policy, brand, capital allocation and transformation, helping the whole organisation perform at its best.

We have a singular culture that unites all our people: we are customer-first challengers, who are committed, clear and connected. These behaviours unite us as one team to deliver for our colleagues, our customers, our stakeholders and the country. Joining BT Group means working at the heart of a business that matters to the UK, with the opportunity to shape decisions, influence outcomes and help set the future course of one of the country’s most important companies.