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LSEG (London Stock Exchange Group)

Senior UI Developer

Sorry, this job was removed at 10:13 p.m. (GMT) on Wednesday, Feb 04, 2026
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London, Greater London, England, GBR
In-Office
London, Greater London, England, GBR

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Role profile:

We are seeking a skilled Senior UI Developer with a solid understanding of JavaScript and React to join our dynamic team in the LCH Digital platform. The ideal candidate will have extensive experience of building micro frontends using webpack. Your main responsibility will be to design, implement, and maintain robust and scalable React frontends deployed into AWS.

ROLE SUMMARY:

  • Design, develop, package and support scalable, reliable, and secure React micro frontends in our AWS infrastructure
  • Lead UI delivery for all new requirements for over 20 existing micro frontend apps.
  • Engage with the wider UI community at LSEG and ensure we are meeting and contributing to group UX standards.
  • Liaise closely with Business, Infrastructure, Support, Testing and Operational teams to ensure the delivered functionality meets all requirements
  • Work with the team to identify areas of improvement and contribute to improve ways of working
  • Take ownership of deliveries from requirement gathering through to production.

WHAT YOU'LL BE DOING:

  • Develop new React front ends and improve existing services.
  • Investigate new technologies and design solutions.
  • Build & prioritise a technical backlog of continual improvement with the rest of the team.
  • Drive CI/CD best practice for the UI
  • Ensure code is well tested and supportable.
  • Respond to incidents, perform root cause analysis, and implement corrective actions.

WHAT YOU'LL BRING:

  • Deep Understanding of Frontend Architectures for Single Page Applications including micro frontends.
  • Very strong JavaScript/TypeScript and functional programming experience
  • Experience with frameworks such as ReactJS, Yup, React hook forms, Zustand etc.
  • Test/Automated testing knowledge with Jest and Playwright.
  • Knowledge of web security and OAUTH2 authentication.
  • Strong problem-solving and analytical skills.
  • Superb communication and collaboration abilities.
  • Proactive attitude and a passion for learning new technologies.

WHAT YOU’LL GET IN RETURN:

  • As part of a small team, you’ll be able to make a huge impact to craft technical solutions and help drive our development process.
  • Exposure to clearing functions across the whole of LSEG Markets and Risk
  • Involvement in the full software creation process
  • Your code and applications will be used by most major financial institutions.

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.

HQ

LSEG (London Stock Exchange Group) London, England Office

10 Paternoster Square, London, United Kingdom, EC4M 7DX,

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