Lead Engineer - Kubernetes & CNI in London

This is an exceptional opportunity to join a high impact engineering team delivering the next generation of LSEG’s latency optimised, real time market data platforms. You will be working at the forefront of Kubernetes platform engineering, with a focus on Container Network Interface (CNI) technologies, helping shape and evolve our hybrid cloud container ecosystem. As part of the specialised container platform, integration, and network connectivity engineering group, you will contribute to the design, development, and lifecycle management of globally consumed infrastructure services. This team plays a central role in our strategic transformation, where innovation, curiosity, and continuous learning are highly valued. We are looking for engineers who thrive in fast moving, complex environments, are self motivated, and enjoy solving deep technical problems. This role offers the chance to work with emerging technologies while contributing real engineering impact in an area undergoing rapid evolution.

What you'll be doing:

• 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.

Technical Influence & Collaboration:

• 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.

Operational Excellence:

• 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.

Ways of Working:

• 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.

What you'll bring:

• 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.

Why This Role Is Exciting:

• Transforming mission critical, global realtime systems onto an advanced, high performance Kubernetes platform.
• Operating at enterprise scale with modern engineering practices.
• Encouraging continuous learning, experimentation, and adoption of new technologies.
• Offering clear opportunities for career growth, deeper technical mastery, and influence over LSEG’s future container strategy.

If you are intellectually curious, enjoy working with cutting edge container technologies, and want to help drive a major platform transformation, this role is an excellent next step.

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 of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day.

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.

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.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.