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DevOps Engineer

LSEG (London Stock Exchange Group)
United States, Missouri, St. Louis
Nov 11, 2025

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:

You will be part of the Trading Application Services team which sits within the Capital Markets Equities Application Services Division. We strive for our engineers to work within small, agile, self-managed teams that emphasise best practice and believe quality is everyone's responsibility. They bring an enthusiastic "you build it you run it" mindset whilst making sure they share their knowledge while removing constraints.

The aim of your role is to strengthen our ability to plan, engineer and support Millennium Technologies (MIT) equities exchange systems, to evolve the system to meet new requirements, proactively prevent and resolve issues that may impact these services and to provide reactive support in a critically important environment. You will need to possess a broad ability covering DevOps and application support, as well as in-depth knowledge and experience of the MIT equities platform.

You will need to be willing to accept a fast paced and varied but balanced and flexible work pattern, which would include covering on-site shifts, participating in the 24x7 on-call rota and supporting weekend testing according to project requirements.

A large part of your role is project based, including playing a key part in improving and evolving our MIT application systems, develop the operational life cycle, upgrading existing systems and implementing integration into the operations architecture toolset. You will be responsible for leading DevOps activities for the team and work on AWS based implementations and CI/CD deployments

WHAT YOU'LL BE DOING:

  • Providing technical feedback into the design and implementation of re-engineering efforts on our MIT equities systems, including the exchange, surveillance and price dissemination platforms.

  • Acting as the operations SME for one or more of the supported MIT equities applications.

  • Developing training materials and provide seminars and workshops on the support of MIT equities applications to colleagues in the UK.

  • Providing Level 2 technical advice and risk assessment based on knowledge of applications, databases and system software.

  • Ensuring that all operational responsibilities are performed including monitoring systems and deploying releases.

  • Providing effective customer concern and resolution of issues and problems to customers.

  • Gaining an in-depth knowledge of the unit's processes

  • Level 2 support for critical trading systems and meet SLAs for supported services.

  • Identifing and implementing operational improvements for processes, performance and reliability.

  • Building CI/CD pipelines orchestrating the promotion of code.

  • Defining and implementing cloud native operational requirements.

  • Building Onprem and AWS/Cloud based applications

  • Keeping artifacts up to date and relevant while actively promoting knowledge sharing.

WHAT YOU'LL BRING:

  • 2+ years of DevOps experience

  • Experience with some of the following technologies: Millennium Exchange, Linux, AWS, Terraform, Ansible, Jenkins, Datadog, Moogsoft, Big Panda, Git, Bitbucket, Elastic Search, Scripting Technologies (Bash / PowerShell), Control-M, Jira, Confluence.

  • Experience in developing cloud native applications

  • Experience in automating infrastructure provisioning and application deployment.

  • Service Management and ITSM practice.

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. 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.

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