Principal Engineer, Front-End Technologies

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.

As a Principal UI Engineer in Benchmarking and Indices Division for LSEG, the individual will have strong UI engineering and architecture experience. Potential candidate will be responsible to work closely with business to gain deep understanding of complex user journeys, workflows and data interactions involved in Index business lifecycle so to come up with outstanding user interfaces using modern UI technologies.

This role will report to Head of Engineering and is encouraged to work with both internal and external index business stakeholders and varied technology teams involving UI engineers/developers, Product Owners.

You will take ownership of establishing the technical standards, architectures, and front-end frameworks for a team of 10+ Engineers. You will ensure the seamless integration of microservices through REST APIs and push the boundaries of front-end development with advanced Angular features and modern web technologies. You will quickly deliver Proof of Concepts (PoCs), guide complex technical decisions, and drive discussions that elevate engineering capabilities across the organization.

Key Responsibilities:

• Lead UI engineering through proven experience, design and architect large-scale applications through modern front end technologies especially Angular
• Drive best practices in state management using NgRx or Akita or working with Business Process Automation (BPM) Engines specifically IBM BAW
• Architect efficient micro-frontends and ensure the seamless integration of microservices via REST APIs and GraphQL.
• Prior experience of efficiently migrate UIs from Silverlight framework to Angular

Design modular, reusable components and architect dynamic, data-driven applications using brand new technologies like WebAssembly and Web Workers for enhanced performance.

• Rapidly develop and deploy Proof of Concepts (PoCs) to test innovative ideas and methodologies in real-world scenarios.
• Implement robust testing strategies using Jasmine, Karma, Cypress, and automated E2E testing for high reliability.
• Set and enforce coding standards, unit testing, and CI/CD pipelines to ensure code quality and continuous delivery.
• Lead the adoption of emerging web technologies such as Progressive Web Apps (PWA), WebSockets, HTTP/2, and service workers to improve the user experience.

Actively engage in architecture reviews, providing leadership in decisions around microservices communication, front-end frameworks, and performance optimization.

• Foster collaboration and continuous learning, mentoring junior developers and driving the team toward engineering excellence.
• Maintain a forward-looking approach by researching and integrating modern front-end tools, techniques, and libraries to stay ahead in the ever-evolving landscape of web technologies.

Qualifications:

• Over 15+ years proven experience as a Lead UI Developer, architecting large-scale applications through the evolution of Angular and prior technologies in enterprise environments is required.
• Extensive experience in RESTful API integration, microservices/microfront-end architecture, and familiarity with GraphQL.
• Strong understanding of front-end architectures with modularization, lazy loading, micro-frontends, and progressive improvements like PWA.
• Proficient in web technologies like Angular Universal (SSR), WebAssembly, and Web Workers for performance optimizations.
• Prior experience of efficiently migrate UIs from Silverlight framework to Angular

Demonstrated ability to rapidly develop and iterate Proof of Concepts (PoCs) with a focus on high-quality delivery.

• Excellent problem-solving skills and a strong understanding of complex technical architecture across the front-end stack.
• Solid experience in TypeScript, and Node.js.
• Strong leadership and communication, capable of mentoring teams, reviewing complex codebases, and setting technical direction.
• Strong experience of SQL

Additional Qualifications:

Bachelor’s or master’s degree or equivalent experience in computer science, Engineering, or a related field.

Experience with cloud base