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From the employer's careers site First seen 29 Oct 2026

Senior Engineer in Site Reliability

The employer hasn't listed a salary.

Apply on London Stock Exchange Group (LSEG)

Description

We are evolving our Reliability Engineering team to move beyond support and operations. As a Senior Engineer in Site Reliability, you will be part of a diverse and inclusive organization that has full ownership of the availability, performance, and scalability of one of the most critical shared services at LSEG.

You will:

  • Maintain Service Level Objectives (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.

Requirements:

  • Bachelor's degree or equivalent experience in Computer Science or related technical 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.

Benefits:

  • Healthcare
  • Retirement planning
  • Paid volunteering days
  • Wellbeing initiatives

Skills

Required

Nice to have

  • AWS Well-Architected Framework
  • Azure Architecture Center
  • cloud security guidelines
  • cloud-native databases
  • DevOps concepts

Ready to apply?

You apply with the employer directly. Their original posting is here: https://lseg.wd3.myworkdayjobs.com/en-US/Careers/job/St-Louis-Missouri/Site-Reliability-Engineer_R0121776-1

Apply on London Stock Exchange Group (LSEG)