At a Glance
- Tasks: Develop and maintain a secure JavaScript SDK for seamless client integration.
- Company: Join LSEG, a global leader in financial markets infrastructure.
- Benefits: Enjoy competitive pay, flexible hybrid work, and wellness initiatives.
- Other info: Collaborative culture that values innovation and diversity.
- Why this job: Make an impact on secure financial transactions while growing your skills.
- Qualifications: Expertise in React, TypeScript, and frontend development required.
LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. 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. Our values of Integrity, Partnership, Excellence and Change 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 are seeking a Senior Frontend Developer to join our Customers Identity & Access Management team at LSEG. You will play a pivotal role in maintaining and evolving our JavaScript SDK, a critical interface that enables secure authentication and seamless integration of our Authentication into client applications across to our customers. This role is ideal for someone who thrives in developer experience, SDK design, and security-focused frontend engineering.
- Own and maintain a JavaScript SDK built with React and TypeScript, enabling secure integration with our custom Secure Token Service.
- Ensure the SDK is secure, performant, and easy to integrate across a wide range of frontend applications.
- Collaborate with backend engineers to align SDK functionality with evolving identity protocols and token flows.
- Build automated tests and CI pipelines to ensure quality, reliability, and backward compatibility.
- Stay current with frontend security best practices and contribute to platform-wide improvements.
Proven experience in frontend development, with deep expertise in React, TypeScript, and modern JavaScript. Familiarity with CI/CD pipelines, automated testing, and versioning strategies for SDKs. Experience with frontend performance optimization, cross-browser compatibility, and accessibility standards.
Competitive compensation with performance-based rewards. A flexible hybrid work model that supports work-life balance. The chance to work on a globally critical system that powers secure financial transactions across markets.
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.
Senior UX Engineer/Front-End Engineer in London employer: London Stock Exchange Group
At London Stock Exchange Group, we pride ourselves on being an exceptional employer, offering a dynamic work culture that fosters innovation and collaboration. As a Lead Java Engineer in our Risk Platform team, you will have access to unparalleled growth opportunities, working alongside industry experts in a vibrant London setting that champions diversity and professional development. Join us to make a meaningful impact while enjoying competitive benefits and a supportive environment that values your contributions.
Contact Details:
London Stock Exchange Group Recruitment Team
