Senior SRE Tech Lead – Reliability & Observability

London Stock Exchange Group

Town of Texas (WI)

On-site

USD 140,000 - 190,000

Full time

14 days+

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Job summary

London Stock Exchange Group (LSEG) is evolving its Site Reliability Engineering capabilities to strengthen reliability, observability, security, and operational excellence across its Markets and Risk Intelligence division. As a Technical Lead SRE, you will be a senior hands-on technical leader shaping reliability foundations for both new and existing platforms.

You will collaborate across Architecture, Engineering, Security and Platform teams, mentor engineers, and drive incident readiness, cost

Qualifications

Bachelor’s Degree in Computer Science or related field.
10+ years of hands-on technical experience in SRE, Platform Engineering, Infrastructure, or related roles.
Strong experience with Azure, including AKS, Azure Container Apps, Virtual Machines, VNet, and Azure managed services.
Hands-on experience with Kubernetes and containerised platforms.
Strong background in Linux systems administrations.
Proven experience designing and operating observability platforms, including monitoring, logging, and alerting.
Hands-on experience with Datadog for metrics, logs, APM, and alerting.
Strong understanding of SRE principles, including SLOs, error budgets, incident management, and reliability engineering.
Experience working closely with architecture and engineering teams on system design and delivery.
Solid understanding of cloud security principles and experience collaborating with security teams.
Experience with cloud cost optimisation strategies and tooling.
Experience integrating AI with observability stacks (Prometheus, Grafana, ELK, OpenTelemetry) for proactive issue detection.

Responsibilities

Lead the establishment of SRE foundations for new projects building environments, monitoring, alerting, and ensuring operational readiness from day one.
Collaborate with Architecture and Engineering teams to embed reliability, scalability, security, and observability into system design.
Define, implement, and champion observability standards, tooling, and guidelines across metrics, logs, traces, and SLIs/SLOs.
Design and evolve monitoring and alerting solutions to improve visibility and reduce toil.
Drive reliability improvements through incident reduction, performance tuning, and resilient patterns.
Partner with Security teams to meet compliance, security, and risk-management expectations.
Lead handovers from project delivery into BAU SRE operations with documentation and readiness.
Influence design decisions through data-driven cloud cost optimization and efficiency initiatives.
Mentor engineers and foster a culture of learning and development.