Senior Site Reliability Engineer

About the role

LSEG is evolving its Site Reliability Engineering capabilities within its Risk Intelligence division, strengthening reliability, observability, security and operational excellence. As a Senior SRE you will be a hands-on technical expert who helps build the foundations of reliability across new and existing platforms, working with Architecture, Engineering, Security and Platform teams. It is not a people-management role, but you will work closely with global teams and may be called on for major incidents.

Key responsibilities

• Lead the establishment of SRE foundations for new projects: environments, monitoring, alerting and operational readiness from day one
• Define and champion observability standards, tooling and guidelines across metrics, logs, traces and SLIs/SLOs
• Design and evolve monitoring and alerting solutions that reduce toil and improve system health
• Drive reliability improvements through incident reduction, performance tuning and resilient patterns
• Partner with Security teams on compliance, security and risk expectations
• Influence design through data-driven cloud cost optimisation
• Mentor engineers, shape engineering standards and foster a culture of learning

Required profile

• Bachelor's degree or equivalent experience in Computer Science, Engineering or a related field
• 5+ years of hands-on technical experience in SRE, Platform Engineering, Infrastructure or similar roles
• Strong Linux systems administration background
• Proven experience designing and operating observability platforms (monitoring, logging, alerting)
• Technical authority, calm under pressure, pragmatic problem-solver and clear communicator

Required skills

• AWS (EKS, ECS, EC2, networking, IAM, managed services) or Azure
• Cloud security principles and collaboration with security teams
• SRE principles: SLOs, error budgets, incident management
• Datadog for metrics, logs, APM and alerting
• Cloud cost optimisation strategies and tooling
• Nice to have: multi-cloud or hybrid experience, IaC (Terraform, CloudFormation), vector databases and RAG, and Generative AI / LLM platforms