> Markdown version of [/jobs/ext/1403741-site-reliability-engineer](https://www.wearedevelopers.com/jobs/ext/1403741-site-reliability-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Site Reliability Engineer - **Company:** LSEG (London Stock Exchange Group) - **Location:** St. Louis, MO, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Amazon Web Services, Amazon Elastic Compute Cloud, Amazon S3, Microsoft Azure, Cloud Computing Security, Cloud Engineering, Databases, DevOps, Amazon DynamoDB, Identity and Access Management, Python (Programming Language), SQL Azure, Reliability Engineering, Datadog, Scripting, Delivery Pipeline, Grafana, Amazon Virtual Private Cloud (VPC), Cloudformation, Amazon Relational Database Service, Git Flow, Information Technology, Cloud Migration, Functional Programming, Cloudwatch, Docker - **Published:** July 23, 2026 - **Apply:** https://diversityjobs.com/main/sendform/8/8/28176/1/17670076?backUrl=%2Fcareer%2F17670076%2FSite-Reliability-Engineer-Missouri-St-Louis ## About the Role 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. Preferred Qualifications 2-5 years of proven experience. Strong understanding of AWS Well-Architected Framework and Azure Architecture Center. Experience with cloud security guidelines (IAM, KMS, Secrets Manager). Familiarity with cloud-native databases (AWS RDS/DynamoDB, Azure SQL). Knowledge of DevOps concepts and modern cloud-native architectures. ## 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. We are looking for people with a passion to learn, and who bring a continuous improvement mentality to our team! Main Responsibilities 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. 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