Senior Site Reliability Engineer

Location: Greater London

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** Senior Engineer, Site Reliability Engineering (Cloud Focus: AWS & Azure)
**** 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  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 Cloud Watch 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 Cloud Formation, 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 Cloud Watch, or Azure Monitor**.
* Implement and maintain
** CI/CD pipelines** (AWS Code Pipeline, Azure Dev Ops, or similar).
* Incident response and blameless postmortems.
* Proficient in Git workflows.
** Preferred Qualifications
*** 8–10 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/Dynamo

DB, Azure SQL).
* Knowledge of
** Dev Ops 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.

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.

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.

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

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