UI Developer

Citigroup; Dublin; Hybrid; EUR 62,000 - 93,000; Full time

Benefits offered by this job

Hybrid work (up to 2 days at home per‑

Job summary

Citi is seeking a UI Developer to join Lightspeed in Dublin, working on Angular and React frontends to build dashboards, visualisations and editors for a platform used by thousands of engineers. This hands‑on role emphasises clean coding, collaboration with Product and Design, and responsible use of AI-assisted tooling.

The team operates in a Kanban, CD environment with a hybrid work model. You will contribute to performance, usability and scalability while growing expertise within Citi’s

Qualifications

• Strong frontend/UI development experience in complex codebases.
• Hands-on Angular experience with modern Angular (v18+) and Lightspeed's Angular v21.
• Proficiency in React (v18+), hooks, context and state management.
• Strong TypeScript skills with strict typing.
• Proficiency in HTML5, CSS3 and responsive design.
• Experience with Git workflows and code reviews.
• Experience writing unit/integration tests (Jest, Karma, Cypress, Playwright).
• Experience integrating with REST APIs.
• Familiarity with AI coding assistants (Copilot, Claude, Codex, Devin, Cursor).
• Understanding of clean code and SOLID principles.
• Comfortable in Kanban, CD, and cross-functional collaboration.
• Strong written and spoken English.

Responsibilities

• Build, enhance and maintain high-quality UI solutions across Lightspeed.
• Develop user-facing features including dashboards, visualisations and editors.
• Write clean, maintainable and well-tested code across frontend apps.
• Diagnose issues with users and engineers to deliver effective solutions.
• Contribute to performance, usability, architecture and code quality.
• Use AI-assisted development tools responsibly and test code.
• Collaborate with Product, Design and Engineering to meet needs.

Skills

Angular

React

TypeScript

HTML5

CSS3

REST APIs

Git

Testing

AI assistants

SOLID

Kanban

Tools

Jest

Karma

Cypress

Playwright

GitHub Copilot

Devin

Claude Code

Codex

Cursor

Job description

About the Team

Lightspeed is Citi's flagship 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.
• Practical experience using AI coding assistants such as Devin, Claude Code, Codex, 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.

What we can offer you

By joining CitiDublin,you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed) andenjoy a whole host of additional benefitsthat supportyou(and your family)tobe well, live well and save well.Discover more here. (opens in new window)

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self every day. We want the best talent around the world to be energised to join us, motivated to stay, and empowered to thrive.

#LI-AH4

Job Family Group

Technology

Job Family

Applications Development

Time Type

Full time

Primary Location Full Time Salary Range

71,440.00 - 107,160.00

Most Relevant Skills

Please see the requirements listed above.

Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

_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._

_If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review_ _Accessibility at Citi ( _._

_View Citi's_ _EEO Policy Statement ( _and the_ _Know Your Rights ( _poster._

Citi is an equal opportunity and affirmative action employer.

Minority/Female/Veteran/Individuals with Disabilities/Sexual Orientation/Gender Identity.