Location
Paternoster Square, London

Hours
Full Time

Salary
Negotiable

About the Role
At LSEG, we build technology that helps people make informed decisions in global financial markets. We are seeking a Principal Cloud Site Reliability Engineer (SRE) with strong cloud platform experience to join us in evolving the reliability, scalability, and operational health of our LSEG Workspace platform. Workspace is a core product used by financial professionals worldwide for real-time data, analytics, research, and productivity. We design and operate this platform balancing performance, resilience, security, and ease of use at scale.

In this role, you will strengthen how our cloud-native services are designed, operated, and supported across AWS and Azure. You will contribute hands-on engineering skills, share technical guidance, and help shape long-term platform approaches in a collaborative, learning-oriented environment. This role combines technical depth, practical delivery, and the opportunity to positively influence how we build and run reliable systems.

Key Responsibilities:
- Design and operate resilient, scalable Workspace platform services across AWS and Azure with attention to availability, performance, and sustainable cost practices.
- Apply Site Reliability Engineering principles including developing and refining SLIs, SLOs, and error budgets, and using incidents as opportunities for learning and improvement.
- Provide experience-based input into distributed systems design, container platforms such as EKS, cloud networking, storage, and security.
- Investigate and resolve complex service issues while improving observability practices for early detection, clear communication, and root-cause analysis.
- Automate infrastructure, delivery pipelines, and operational processes supporting CI/CD workflows using GitLab and infrastructure as code tools such as Terraform.
- Embed security and compliance into engineering practices ensuring alignment with governance, vulnerability management, and regulatory requirements.
- Collaborate across engineering and product teams to share knowledge, mentor engineers, and create reusable patterns that improve platform consistency.

Join us and be part of a dynamic organisation that values innovation, quality, and continuous improvement, where your contributions will make a significant impact.

Experience
Substantial experience in cloud engineering, site reliability engineering, or DevOps at a senior or principal level with a hands-on approach to building and supporting production systems. Strong experience working with AWS and/or Azure and comfortable operating Kubernetes-based platforms such as EKS. Solid Linux foundation and familiarity with SRE concepts and observability practices. Experience with CI/CD tooling such as GitLab and infrastructure-as-code solutions like Terraform. Understanding of cloud-native networking and high-availability design. Comfortable working in Agile or Scrum-based teams.

About you
You enjoy working collaboratively, communicating clearly, and learning alongside others in a continuously evolving technical environment. You are curious, thoughtful, and motivated to solve complex problems while sharing knowledge and mentoring others. You value quality, reliability, and sustainable engineering practices and thrive in a culture of continuous improvement.

Qualifications
While specific qualifications are not mandated, a strong technical background in cloud platforms, site reliability engineering, or related disciplines is essential. Demonstrated expertise in cloud-native technologies, automation, and security best practices is highly desirable.