Site Reliability Engineering Specialist-Professional Services

Professional Services was formed as a progressive development towards the convergence of multiple domains across BT. We pride ourselves on providing expert third line support to an extensive range of services; ensuring the required levels of availability are maintained. The team is widely recognised for getting things done, while making transformational improvements along the way. We do this by ensuring we have the right people to achieve our high ambitions. 

The purpose of this role is to apply the SRE principles to major end-to-end technology introduction projects and service assurance activities on BT’s core network infrastructure. You will take the lead on complex and high impact fault resolution across multiple platforms and services. You will also build and own network automation processes to deliver flawless change to BT’s networks.

• Builds network engineering change processes for complex end-to-end technology introduction in the live network, utilising automation & CI/CD pipelines.
• Leads on major incident resolution acting as a final technical escalation point within BT.
• Leads blameless post‑incident reviews to uncover systemic root causes and convert learnings into concrete reliability, automation, and process improvements.
• Champions a reliability‑first change culture, promoting safe deployment patterns, blameless learning, and continuous improvement across engineering teams.
• Collaborates with design & platform teams to support the implementation of flawless change into the live network.
• Acts as a subject matter expert within the network engineering domain. Applying this expertise to troubleshoot faults on our infrastructure crossing multiple platform domains.
• Embeds secure by design principles when building new change processes and solutions.
• Will champion and build effective working relationships, both internally and externally to deliver business outcomes.
• Champions the adoption of Site Reliability Engineering practices within Professional Services, driving cultural change towards automation, observability, and reduced operational toil. 

Must have: 

• A strong understanding of multi-vendor IP/MPLS networks (Nokia, Cisco, Juniper etc)
• A strong understanding of network routing protocols such as IS-IS,  LDP, RSVP, segment routing, OSPF, eBGP, iBGP, MP-BGP
• A strong understanding of fundamental protocols such as DNS, DHCP & NTP
• A strong understanding of network change  & incident management best practice
• A good understanding of Linux operating systems
• An intermediate level of proficiency in atleast one programming language preferably Python
• You will be confident and professional in communicating with all stakeholders, both locally and with members of the Senior Management Team.
• You will have the ability to work in a high-pressure environment. 

Desired: 

• Strong Python programming proficiency
• Strong understanding of IaC languages such as Ansible &Terraform
• A strong understanding of containerisation using docker, podman or a similar container engine
• Strong proficiency in building CI/CD pipelines
• A good knowledge of coding best practices including code structure, peer review & testing. 

To apply for this role you will be:  

• A junior network engineer with a solid grasp on network fundamentals looking to expand their knowledge, take more ownership and drive positive change for the team 

OR 

• A senior network engineer who has most of the skills listed and is ready to hit the ground running!