Site Reliability Engineer – Cloud Reliability & Observability

Lumesse; Fenny Stratford; Hybrid; GBP 65,000 - 90,000; Full time

Benefits offered by this job

Hybrid work arrangement

Office in Milton Keynes

Job summary

Connells Group UK is seeking an experienced Site Reliability Engineer (SRE) to join the Group Technology Team in Milton Keynes. The role focuses on building and operating ConnellsX, our Azure-based internal developer platform, ensuring cloud hosting is reliable, scalable, observable, secure by default and easy for developers to use.

You will help establish SRE practices, define SLIs/SLOs, reduce toil, automate repetitive tasks, and collaborate across teams to improve reliability and performance.

Qualifications

• Hands-on experience with Azure Monitoring (Application Insights, Alerts, Action Groups).
• Strong knowledge of OpenTelemetry (including Kubernetes).
• Experience with Terraform and GitHub Actions.
• Ability to define SLIs/SLOs and manage error budgets.
• Incident response and post-incident review experience.
• Familiarity with Docker and Kubernetes.
• Strong communication and documentation skills.
• Working knowledge of .NET/C# and React/NextJS.
• Experience with cloud cost optimisation.
• Knowledge of Azure networking (DNS, VNets, Firewalls).
• Understanding of security frameworks (ISO 27002, NIST CSF).

Responsibilities

• Support teams using ConnellsX and respond to incidents in a blameless way.
• Investigate root causes and drive post-incident actions to completion.
• Define SLIs, contribute to SLOs, and monitor error budgets.
• Build dashboards, alerts, and runbooks to improve visibility.
• Automate repetitive tasks to reduce operational toil.
• Collaborate with cross-functional teams to enhance reliability and observability.
• Support performance testing and capacity planning.
• Proactively identify and prioritise reliability improvements.

Skills

Monitoring

Incident response

SLIs/SLOs

Automation

Runbooks

Cost optimisation

Security standards

Collaboration

Documentation

Data-driven decisions

Tools

Azure Monitor

OpenTelemetry

Terraform

GitHub Actions

Docker

Kubernetes

Job description

Connells Group UK is seeking an experienced Site Reliability Engineer (SRE) to join the Group Technology Team in Milton Keynes. The role focuses on building and operating ConnellsX, our Azure-based internal developer platform, ensuring cloud hosting is reliable, scalable, observable, secure by default and easy for developers to use.

You will help establish SRE practices, define SLIs/SLOs, reduce toil, automate repetitive tasks, and collaborate across teams to improve reliability and performance.