Site Reliability Engineering Specialist

Job Req ID: 61034

Posting Date: 12/08/2026

Function: Service

Location: Birmingham, London or Sheffield

Salary: Competitive

About the role

As a Site Reliability Engineering Specialist, you’ll drive the performance, resilience, and reliability of critical HMRC network services through advanced monitoring, alerting, and automation. You’ll play a key role in evolving and optimising the tools that underpin the estate—resolving complex incidents, enhancing efficiency, and collaborating with technical teams and partners to deliver continuous improvement. This is an exciting opportunity for an innovative engineer who enjoys solving challenges at scale and making a measurable impact across a high-profile, mission-critical environment.

Please note you must either hold or be eligible for SC (Security Clearance) for this role, which will require a minimum of 5 years working history in the UK to be eligible.

What you’ll be doing

• Support and enhance network tooling applications across BT and customer estates, ensuring reliable monitoring and automation across critical services
• Configure, deploy, and manage virtualised environments, driving seamless operations through proactive troubleshooting and optimisation
• Evaluate and introduce new tooling capabilities to maximise network visibility and improve overall monitoring coverage
• Integrate systems using APIs and contribute to building scalable automation pipelines that improve efficiency and reduce manual effort
• Produce clear, high-quality technical documentation, including processes, procedures, and business cases, aligned to internal quality frameworks

Essential Skills / Experience

• Understanding of ITIL practices with the ability to apply incident management principles in a live support environment
• Experience working with server operating systems such as Windows Server or Linux, alongside virtualised environments like VMware
• Ability to create clear, user-friendly documentation covering deployment best practices, tooling, and automation (including CI/CD)
• Familiarity with a range of technologies including Python, JavaScript, SQL, PowerShell, REST/SOAP APIs, GitLab, and Ansible

Desirable Skills / Experience

• Ability to provide detailed and consumable documentation around best practices for deployment of tooling applications, automation including CI/CD.

• Experience integrating services and building end-to-end automation pipelines, with exposure to platforms such as ServiceNow

Our Package

Tailored benefits make a real difference. That’s why we offer a comprehensive range to support your growth, wellbeing, and everyday life. You can design the package to suit you and your lifestyle. Your core benefits include:

• 10% on target annual bonus
• Access to an online private GP 24/7 for you and your immediate family
• Market-leading paid carers leave with up to 2 weeks off
• Equalized maternity, paternity, and adoption leave – 18 weeks’ full pay and 8 weeks’ half pay
• Discounted EE and BT products, including mobile and broadband
• Market leading Pension scheme – 5% from you and 10% from us
• Holiday purchase scheme

You can select additional benefits, including healthcare, dental, gym memberships and more when you’re ready.

Flexible Working
This role offers a 3 together, 2 wherever working model. This means you are required to be at your contractual location 3 days a week with 2 flexible days per week.

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.