Technical Lead - Site Reliability Engineering

LSEG; Allen (TX); On-site; USD 122,000 - 176,000; Full time

Job summary

London Stock Exchange Group (LSEG) is seeking a Technical Lead SRE to advance reliability, observability, security and operational excellence across our platforms. You will collaborate with Architecture, Engineering, Security and Platform teams to embed reliability from day one and mentor engineers to build resilient systems.

Requirements include 10+ years in SRE/Platform Engineering, strong Azure/Kubernetes experience, Linux administration, and Datadog observability.

Qualifications

• 10+ years hands-on SRE/Platform Engineering experience
• Strong Azure experience: AKS, Azure Container Apps, VMs, VNet
• Kubernetes and containerised platforms
• Proven observability: monitoring, logging, alerting
• Datadog experience for metrics, logs, APM, alerts
• SRE principles: SLOs, error budgets, incident management

Responsibilities

• Lead establishment of SRE foundations for new projects with monitoring and readiness
• Embed reliability, scalability, security, and observability in system design
• Define observability standards across metrics, logs, traces, and SLIs/SLOs
• Design and evolve monitoring/alerting to reduce toil
• Drive reliability improvements through incidents, performance tuning, and resilient patterns
• Collaborate with Security to meet compliance and risk management expectations
• Handover to BAU SRE with documentation and strong operational practices
• Mentor engineers and influence engineering standards

Skills

SRE leadership

Azure

AKS

Kubernetes

Linux admin

Datadog

Observability platforms

Cloud cost optimization

AI in observability

Terraform / IaC

OpenTelemetry

Education

Bachelor’s Degree in Computer Science

Tools

Terraform

CloudFormation

Datadog

Prometheus

Grafana

Job description

Role Profile

We are evolving our Site Reliability Engineering capabilities to strengthen reliability, observability, security, and operational excellence across our Markets and Risk Intelligence division.

As a Technical Lead SRE, you will be a senior hands‑on technical person help shape the foundations of reliability across both new and existing platforms. You will collaborate with Architecture, Engineering, Security, and Platform teams to ensure reliability is built into systems from day one. You will work closely with global teams and may occasionally be called upon for major incidents or critical issues. This position requires a highly proactive, hard-working expert with strong leadership presence and ownership of platform reliability outcomes.

Key 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 that improve visibility, reduce toil, and strengthen system health.
• Continuously drive reliability improvements across our environments through incident reduction, performance tuning, and building resilient patterns.
• Partner with Security teams to ensure our platforms meet compliance, security, and risk‑management expectations.
• Lead seamless handovers from project delivery into BAU SRE operations by ensuring documentation, readiness, and strong operational practices.
• Influence architectural and design decisions through data‑driven cloud cost optimization and efficiency initiatives.
• Be a technical leader and mentor supporting engineers, shaping engineering standards, and fostering a culture of learning and development.

Person Specification

Education

• Bachelor’s Degree in Computer Science or related field

Required Skills And Experience

• 10+ years of hands‑on technical experience in SRE, Platform Engineering, Infrastructure, or related roles
• Strong experience with Azure, including services such as AKS, Azure Container Apps, Virtual Machines, virtual networking (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.

Good To Have Skills

• Experience or working knowledge of AWS
• Experience supporting multi‑cloud or hybrid environments
• Exposure to Infrastructure as Code (e.g., Terraform, CloudFormation)
• Experience in large‑scale, complex, or regulated environments
• Knowledge of vector databases and RAG architectures for building internal SRE knowledge assistants.
• Knowledge of Generative AI and LLM platforms (e.g., Claude, Amazon Bedrock)

Person Specification

• Strong technical authority with the ability to influence design and operational decisions
• Highly collaborative, comfortable working across architecture, engineering, security, and operations teams
• Calm and methodical under pressure, especially during incidents and critical issues
• Pragmatic problem‑solver who balances reliability, security, cost, and delivery speed
• Clear communicator, able to explain complex technical concepts to diverse audiences

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 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. 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. LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives. Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject. If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.