About the role

  • Lead Engineer focusing on Kubernetes and CNI technologies for the London Stock Exchange Group. Delivering next-generation, real-time market data platforms for a global financial markets provider.

Responsibilities

  • Contribute to the design, implementation, and enhancement of Kubernetes based container platform components, with a focus on CNI, networking, and cluster-level integrations.
  • Lead delivery of engineering tasks for Kubernetes platform features across development, test, and production environments.
  • Implement, configure, and validate CNI solutions (e.g., Cilium), network policies, and associated platform capabilities.
  • Drive high quality engineering practices including testing, documentation, peer reviews, and CI/CD automation.
  • Act as a domain specialist in Kubernetes and CNI networking, guiding team members and partnering with adjacent engineering squads.
  • Provide technical input into platform architecture, backlog refinement, and feasibility assessments.
  • Assist application teams onboarding to the container platform, providing guidance on networking, cluster usage, and deployment patterns.
  • Support troubleshooting and root-cause analysis across multilayered network and container environments.
  • Contribute to platform reliability and observability improvements through dashboards, run-books, and automation.
  • Evaluate new tools, technologies, and approaches and present findings to the wider engineering community.
  • Operate effectively in an agile, iterative delivery model.
  • Manage multiple work streams and priorities in a dynamic environment.
  • Uphold engineering standards and advocate for platform quality, stability, and scalability.

Requirements

  • Hands on Kubernetes engineering experience in production environments.
  • Strong CNI experience, ideally including Cilium, Kubernetes networking, network policies, and service routing.
  • Solid understanding of Linux networking fundamentals and container networking internals.
  • Working knowledge of Kubernetes deployment pipelines, Git-based workflows, and automated testing principles.
  • Strong recent Linux (especially Ubuntu) experience.
  • Exposure to monitoring, observability, and troubleshooting across containerised workloads.
  • Familiarity with CI/CD tools (GitLab, Jira, Confluence).
  • Experience with automation tools such as Terraform, Ansible, or scripting languages.
  • Understanding of performance tuned or latency sensitive environments (preferred but not required).
  • Ability to collaborate effectively across teams and communicate technical concepts clearly.
  • Strong analytical and problem solving ability in complex system environments.
  • Comfortable working in a fast-paced environment with evolving priorities.

Benefits

  • Healthcare
  • Retirement planning
  • Paid volunteering days
  • Wellbeing initiatives

Job title

Lead Engineer – Kubernetes, CNI

Job type

Experience level

Senior

Salary

Not specified

Degree requirement

Bachelor's Degree

Location requirements

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