Principal Platform Engineer

LSEG; Greater London; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Healthcare

Retirement planning

Paid volunteering days

Wellbeing initiatives

Job summary

LSEG (London Stock Exchange Group) in London is seeking a Kubernetes Production Engineer to run production Kubernetes at scale for latency‑sensitive, real‑time financial market applications.

You will work closely with platform build teams, architects and application owners to harden platforms, improve operational tooling and ensure production readiness before and after go‑live. This role suits a hands-on engineer with a production mindset.

Qualifications

• Proven enterprise Kubernetes and cloud-native network engineering in large production environments.

Responsibilities

• Own the production operation of Kubernetes and hybrid cloud platforms.
• Evolve monitoring, alerting and observability across clusters.
• Analyze platform behaviour under load and drive improvements.
• Support incident response, root cause analysis and post-incident actions for Kubernetes-based services.
• Partner with platform engineers and application teams to ensure production readiness.
• Improve automation, runbooks and operational tooling to reduce manual intervention.
• Act as a Kubernetes production SME and advise on best practice and operational standards.
• Influence platform roadmaps through data-driven operational insights.

Skills

Kubernetes production engineering

Large-scale Linux platforms

Containerized workloads

Performance/latency troubleshooting

CI/CD pipelines

Infrastructure automation

Communication with stakeholders

Agile delivery

Education

Bachelor's degree in Computer Science or related field

Tools

Terraform

Ansible

Scripting

GitLab

Jira

Confluence

Job description

Job Description (Job advert content)

ABOUT US:

LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. It’s how we’ve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years.Through a comprehensive suite of trusted financial market infrastructure services – and our open-access model – we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.

LSEG is headquartered in the United Kingdom, with significant operations in 70 countries across EMEA, North America, Latin America and Asia Pacific. We employ 25,000 people globally, more than half located in Asia Pacific. LSEG’s ticker symbol is LSEG.

OUR PEOPLE:

People are at the heart of what we do and drive the success of our business. Our culture of connecting, creating opportunity and delivering excellence shape how we think, how we do things and how we help our people fulfil their potential. We embrace diversity and actively seek to attract individuals with unique backgrounds and perspectives. We break down barriers and encourage teamwork, enabling innovation and rapid development of solutions that make a difference. Our workplace generates an enriching and rewarding experience for our people and customers alike. Our vision is to build an inclusive culture in which everyone feels encouraged to fulfil their potential.

We know that real personal growth cannot be achieved by simply climbing a career ladder – which is why we encourage and enable a wealth of avenues and interesting opportunities for everyone to broaden and deepen their skills and expertise. As a global organisation spanning 70 countries and one rooted in a culture of growth, opportunity, diversity and innovation, LSEG is a place where everyone can grow, develop and fulfil your potential with meaningful careers.

ROLE SUMMARY:

This role sits within a strategic platform engineering team responsible for the production stability, performance and operational readiness of Kubernetes‑based platforms supporting LSEG’s latency‑sensitive, real‑time financial market applications.

As a Kubernetes Production Engineer, you will focus on running Kubernetes at scale in production — ensuring clusters, networking, and supporting services are reliable, observable and fit for purpose under real‑world load. You will work closely with platform build teams, architects and application owners to harden platforms, improve operational tooling, and ensure services are production‑ready before and after go‑live.

This is a hands‑on engineering role for someone who enjoys working close to live systems, diagnosing complex behaviours in distributed environments and continuously improving how Kubernetes platforms are operated. The ideal candidate is comfortable in fast‑paced environments, thrives on problem‑solving and brings a strong production mindset rather than a purely development or design focus.

WHAT YOU’LL BE DOING:

• Owning the production operation of Kubernetes and hybrid cloud platforms, including reliability, performance and stability.

• Implementing and evolving monitoring, alerting and observability across Kubernetes clusters and supporting infrastructure.

• Analysing platform behaviour under load, identifying risks and driving proactive improvements.

• Supporting incident response, root cause analysis and post‑incident actions for Kubernetes‑based services.

• Partnering with platform engineers and application teams to ensure production readiness and smooth onboarding.

• Improving automation, runbooks and operational tooling to reduce manual intervention.

• Acting as a Kubernetes production SME, advising on best practice and operational standards.

• Influencing platform roadmaps through data‑driven operational insights.

WHAT YOU’LL BRING:

• Proven enterprise Kubernetes, container orchestration, and cloud-native network engineering experience on large production environments

• Strong experience operating large‑scale Linux‑based platforms in production, ideally within hybrid or cloud‑native environments.

• Solid understanding of containerised workloads and Kubernetes environments from an operational perspective.

• Experience diagnosing performance, latency and availability issues across complex distributed systems.

• Familiarity with CI/CD pipelines and Git‑based workflows.

• Working knowledge of infrastructure automation and configuration management (e.g. Terraform, Ansible, scripting).

• Strong problem‑structuring skills and the ability to communicate technical issues clearly to both engineering and non‑technical stakeholders.

• Comfortable working across multiple workstreams and responding to operational priorities when required.

• Experience with Agile delivery environments and tools such as Jira, Confluence and GitLab.

Career Stage:

Manager

London Stock Exchange Group (LSEG) Information:

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. 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.