Site Reliability Engineer

London Stock Exchange Group; St. Louis (MO); On-site; USD 140,000 - 180,000; Full time

Benefits offered by this job

Healthcare

Retirement planning

Paid volunteering days

Wellbeing initiatives

Job summary

London Stock Exchange Group (LSEG) is seeking a Senior Site Reliability Engineer to own reliability, performance, and scalability of shared services. You will automate AWS/Azure, improve observability with Datadog and CloudWatch, and collaborate with development teams to accelerate releases.

You will participate in on-call rotations, drive blameless postmortems, and evangelize best practices for scalable, secure cloud-native architectures across multi-cloud environments.

Qualifications

• Bachelor's degree in Computer Science or related field.
• Proficiency in Shell and Python scripting.
• Experience with Terraform or other IaC tools.
• Hands-on with AWS services and Azure equivalents.
• Knowledge of Docker and Kubernetes (EKS/AKS preferred).
• Familiar with Datadog, CloudWatch, or Azure Monitor.
• Experience building CI/CD pipelines and Git workflows.
• Incident response and blameless postmortems.

Responsibilities

• Maintain SLOs for cloud-hosted systems and improve availability.
• Design automation for AWS and Azure to scale systems efficiently.
• Collaborate with development teams to enhance reliability and release velocity.
• Participate in on-call rotations and postmortems.
• Promote strong engineering practices for scalable services.
• Support cloud migrations with observability dashboards.
• Drive learning in multi-cloud technologies.

Skills

Scripting

Terraform

AWS & Azure

Observability

CI/CD

Git workflows

Incident response

Education

Bachelor's degree in Computer Science

Tools

Docker

Kubernetes

AWS CloudWatch

Azure Monitor

Job description

Our Team

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.
• 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.

Minimum Qualifications

• 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.

Career Stage: Senior Associate

London Stock Exchange Group (LSEG)

Information

Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.

About LSEG

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth. Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Workplace

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

Equal Opportunities

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law.

Accommodation

Conforming with applicable law, we can reasonably accommodate applicants’ and employees’ religious practices and beliefs, as well as mental health or physical disability needs.

Culture and Sustainability

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

Benefits

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

Exploration

Explore our divisions. Our Data & Analytics, Capital Markets and Post Trade divisions have a combined power that provides a comprehensive, integrated suite of trusted financial market infrastructure services to help our customers pursue their ambitions.

Headquarters

LSEG is headquartered in the United Kingdom, with significant operations in 70 countries across Europe, the Middle East, Africa, North America, Latin America and Asia Pacific.

Contact

Find out more. Get to know some of our people who are pushing the boundaries of technology, finance and more around the world.