UI Developer – Lightspeed | Angular, React & AI

About the Team

Lightspeed is Citi’s internal CI/CD platform, used daily by 10,000+ engineers across the bank. Built using Citi technology and open-source components, it supports the engineering teams delivering technology at scale.

You’ll join a collaborative UI chapter working on a clean, well-maintained codebase, building the next generation of user experiences for dashboards, pipeline visualisations and configuration editors.

We value ownership, curiosity and continuous improvement, with AI-assisted development tools forming part of our engineering workflow.
 

The Role

We’re looking for a UI Developer to help build and evolve the user-facing experience of Lightspeed.

You’ll work across modern Angular and React applications, solving complex engineering challenges and delivering intuitive, reliable interfaces. This is an opportunity to work on a platform used by thousands of engineers, contribute to meaningful technical improvements and develop your expertise within a supportive engineering team.

You’ll work closely with developers, Product and Design in a hands-on environment where asking questions, sharing ideas and understanding the code you deliver are encouraged.
 

Key Responsibilities

• Build, enhance and maintain high-quality UI solutions across Lightspeed, working through a Kanban-based delivery model.
• Develop user-facing features including dashboards, pipeline visualisations and configuration editors.
• Write clean, maintainable and well-tested code across complex frontend applications.
• Work with users and engineering colleagues to diagnose issues and deliver effective solutions.
• Contribute to technical improvements across performance, usability, architecture and code quality.
• Use AI-assisted development tools responsibly, ensuring you understand, validate and test the code you deliver.
• Stay curious about emerging technologies and contribute ideas that improve the platform and how the team works.
• Collaborate with Product, Design and Engineering to deliver solutions that meet user and business needs.
   

Key Skills & Experience

• Strong professional experience in frontend/UI development, with solid software engineering fundamentals and confidence working in complex codebases.
• Strong hands-on Angular experience, including modern Angular (v18+). The Lightspeed application currently runs on Angular v21.
• Good experience with React (v18+), including hooks, context and state management.
• Strong TypeScript skills, including strict typing and modern development practices.
• Proficiency in HTML5, CSS3 and responsive design, including Flexbox and Grid.
• Experience with Git, including branching, pull requests, rebasing and code review workflows.
• Practical experience writing and maintaining unit and integration tests, using tools such as Jest, Karma, Cypress or Playwright.
• Experience integrating with REST APIs, with an understanding of GraphQL.
• Practical experience using AI coding assistants such as GitHub Copilot or Cursor.
• Understanding of clean code, SOLID principles and separation of concerns.
• Comfortable working in a Kanban, continuous-delivery environment and collaborating across Product, Design and Engineering.
• Strong communication skills and a willingness to ask questions, share ideas and continuously improve.
• Good working English, both written and spoken.

Additional Experience (Valued, Not Essential)

• Exposure to CI/CD platforms or developer tooling, such as Tekton, Jenkins, Harness or TeamCity.
• Experience with design systems, shared component libraries or frontend architecture patterns such as Nx.
• Background working in enterprise technology, financial services or regulated environments.
   

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Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

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