Site Reliability Engineer

# Site Reliability Engineer Job Req  Date: 13 Feb 2026

Function:
Software Engineering Unit:
Digital

Location:

Assembly, Bristol, United Kingdom Salary:
Competitive##
** Why this job matters
** As a Site Reliability Engineer (SRE), you will play a critical role in ensuring BT delivers exceptional service performance, reliability, and availability across its digital platforms. In a fast-paced, cloud-driven AI environment where customers expect seamless experiences, this position enables scalable, fault-tolerant, and cost-effective solutions through cross-team collaboration, automation, monitoring, and resilience strategies. By minimising downtime, reducing operational risk, and accelerating innovation, you will safeguard BT’s reputation for reliability while empowering the business to adapt quickly to emerging technologies and deliver consistent value to customers worldwide.##

** What you’ll be doing
*** Implement and optimise CI/CD pipelines, automation frameworks, and infrastructure-as-code solutions using AWS, Git Ops, and container technologies.
* Design, develop, and troubleshoot large-scale distributed systems across on-prem and cloud environments, ensuring reliability and scalability.
* Lead performance and scale testing, monitoring, and analysis to improve system stability, security, and efficiency.
* Integrate AI-driven observability and monitoring tools to improve incident detection, anomaly identification, and root‑cause analysis.
* Implement and maintain ML/AI automation (e.g., predictive scaling, automated remediation, intelligent alerting) to improve platform reliability and reduce manual toil.
* Proactively identify and mitigate risks, perform root cause analysis, and implement preventive measures following incidents.
* Champion best practices in Site Reliability Engineering, mentor team members, and share knowledge on emerging trends and technologies.
* Collaborate across organisational boundaries to deliver improvements aligned with broader SRE initiatives.##
** Experience you'll have
** Essential:
* A deep understanding of full-stack monitoring solutions, such as Dynatrace, to ensure current end-to-end performance and trends of owned Digital Applications.
* Strong proficiency in one or more programming languages (e.g. Java, Python).
* Experience with cloud platforms (AWS, Azure, or GCP).
* Solid understanding of software architecture, design patterns, and microservices.
* Familiarity with CI/CD tools and Dev Ops practices.

Desirable:
* AIOps fundamentals (cross-domain telemetry ingestion, event correlation, topology/context building, and remediation augmentation).
* Agentic/autonomous observability skills (using intelligent agents to detect anomalies, correlate signals, and trigger guarded remediations to cut MTTR).
* AI-assisted alerting & noise reduction (designing contextual, business impact aware alerts; prioritisation via ML).##
** Benefits
* ** An annual on-target bonus of 10% (personal and company multipliers).
* BT Pension scheme: minimum 5% employee contribution, BT contribution 10%.
* EE Broadband – from £10/month for 150

Mb and £20 for 900

Mb – lower than any other provider.
* EE Mobile – Save 50% on Mobile & SIM-only plans or pay just £10/month for an EE SIM.
* EE TV – Enjoy premium content like Netflix and TNT Sports, with the flexibility to swap packages monthly, starting from just £10/month.
* Combine Broadband, TV, and Mobile from just £30/month and unlock extra savings when you take both Broadband and Mobile.
* There’s also great support for working parents, including pay whilst on maternity, adoptive, and paternity leave.
* 25 days annual leave (not including bank holidays), increasing with service.
* Volunteering days, so you can give back to your local community.
* Brand new electric vehicle salary sacrifice arrangement, known as ‘My EV’.##
** Our leadership standards
**** Looking in:*
* ** Leading inclusively and Safely
** I inspire and build trust through self-awareness, honesty and integrity.  
** Owning outcomes
** I take the right decisions that benefit the broader organisation.
** Looking out:*
* ** Delivering for the customer
** I execute brilliantly on clear priorities that add value to…