Senior Cloud Reliability Engineer (AWS/Azure)

LSEG; United States; On-site; USD 140,000 - 190,000; Full time

Job summary

London Stock Exchange Group (LSEG) Information is seeking a Senior Site Reliability Engineer to own availability, performance and reliability of critical shared services. You will design scalable cloud-native solutions and implement automation in AWS and Azure, partner with development teams and drive improvements across monitoring, deployment, and incident response.

You will participate in on-call rotations, create blameless postmortems, and promote robust engineering practices while advancing

Qualifications

• Bachelor’s degree in Computer Science or related field.
• Proficiency in scripting languages (Shell, Python).
• Experience maintaining Infrastructure as Code (IaC) using Terraform (or AWS CloudFormation, Azure ARM templates).
• Hands‑on experience with AWS services (EC2, S3, RDS, IAM, VPC, Lambda) and familiarity with Azure equivalents.
• Knowledge of Docker and Kubernetes (EKS or AKS preferred).
• Familiarity with observability tools like Datadog, AWS CloudWatch, or Azure Monitor.
• Implement and maintain CI/CD pipelines (AWS CodePipeline, Azure DevOps, or similar).
• Incident response and blameless postmortems.
• Proficient in Git workflows.

Responsibilities

• Maintain SLOs for cloud-hosted systems, continuously measuring and improving availability, latency, and overall system health.
• Design and implement automation for AWS and Azure environments to scale systems sustainably, prevent service issues, and enable rapid recovery.
• Partner with development teams to improve reliability, observability, and release velocity using cloud-native tools and guidelines.
• Participate in on-call rotations, incident response, postmortems, and root cause analysis.
• Advocate for strong engineering practices for building, deploying, and running scalable, reliable services across AWS and Azure.
• Enable cloud migration by performing architectural reviews, operational readiness testing, and configuring observability dashboards (e.g., Datadog integrated with AWS CloudWatch and Azure Monitor).
• Drive continuous learning and development in multi-cloud technologies.

Skills

Shell scripting

Python

Terraform

AWS services

Docker Kubernetes

Datadog

CI/CD pipelines

Git workflows

Incident response

Blameless postmortems

Education

Bachelor's degree in CS or related field

Tools

AWS CloudFormation

Azure ARM templates

Datadog

CloudWatch

Azure Monitor

CodePipeline

Azure DevOps

Terraform

Job description

London Stock Exchange Group (LSEG) Information is seeking a Senior Site Reliability Engineer to own availability, performance and reliability of critical shared services. You will design scalable cloud-native solutions and implement automation in AWS and Azure, partner with development teams and drive improvements across monitoring, deployment, and incident response.

You will participate in on-call rotations, create blameless postmortems, and promote robust engineering practices while advancing