Technical Lead - Site Reliability Engineering

About the role

LSEG is evolving its Site Reliability Engineering capabilities to strengthen reliability, observability, security and operational excellence across its Markets and Risk Intelligence division. As Technical Lead SRE, you will be a senior hands-on technical person who helps shape the foundations of reliability across new and existing platforms, working with Architecture, Engineering, Security and Platform teams. 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.
• Collaborate with Architecture and Engineering teams to embed reliability, scalability, security and observability into system design.
• 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 strengthen system health.
• Drive reliability improvements through incident reduction, performance tuning and resilient patterns.
• Partner with Security teams on compliance, security and risk-management expectations.
• Ensure smooth handovers from project delivery to BAU SRE operations, with documentation and operational practices.
• Influence design decisions through data-driven cloud cost optimisation.
• Mentor engineers, shape engineering standards and foster a culture of learning.

Required profile

• Bachelor's degree in Computer Science or a related field.
• 10+ years of hands-on technical experience in SRE, Platform Engineering, Infrastructure or related roles.
• Strong technical authority, calm and methodical under pressure, pragmatic problem-solver and clear communicator.

Required skills

• Strong AWS experience (EKS, ECS, EC2, networking, IAM, managed services).
• Deep hands-on Kubernetes and containerised platforms.
• Observability platforms, including Datadog for metrics, logs, APM and alerting.
• SRE principles: SLOs, error budgets, incident management.
• Cloud security principles and FinOps awareness.
• Integrating AI with observability stacks (Prometheus, Grafana, ELK, OpenTelemetry).

Good to have: Langfuse, multi-cloud or hybrid environments, IaC (Terraform, CloudFormation), vector databases and RAG, and knowledge of generative AI and LLM platforms.