Senior UI Engineer

Single PositionExplore a Career With UsView All JobsHybridSenior UI EngineerDUBLIN, Ireland No longer accepting applications.Job ID26978050Date posted07/07/2026DepartmentTechnologyWe're seeking a Senior Frontend Engineer with a strong React/TypeScript background, passionate about crafting exceptional AI product experiences. You'll own the user-facing layer of our nextgeneration Developer Productivity platform @ Citi, transforming complex AI capabilities - from chat interfaces to rich data visualizations - into intuitive, trustworthy experiences. You'll collaborate closely with other AI, Software Engineers and the Product team to leverage bleeding-edge Generative AI.You'll be joining a small, high-impact team challenging, changing, modernising & enhancing the experience of our 50,000 engineers globally throughout Citi's SDLC (Software Development Life Cycle).Where you'll work: You’ll sit within Development Enablement, part of Citi’s CTO organisation. A group focused on innovation, developer platforms and internal tools used across the bank, where we experiment and ship fast, like a startup inside a global bank. Our mission is to transform developer productivity saving our engineers tens of minutes per day, equating to £10,000,000s of savings at Citi’s scaleYour first 90 days - become a citizen within Developer Enablement's AI & UXBy the end of your third month, you will have:Released to production a small new or enhanced AI-first user interface that will have positively impacted the lives of thousands of Software Engineers and Business Analysts working in Software Requirements Engineering.Started raising the bar in our React.JS codebase introducing better componentisation, testing, storybook.Have an established network of UI engineers across the organisation to contribute and learn about best practice.Get buy in from the team on architectural principles, ways of working and system requirements. For example: you might choose to separate core logic from the framework in the Generated by Stylus Workspaces Internal Use Only 2 UI; using Zustand as the data layer; we also may decide that we want the UI to respond to any action in under 100ms. By the end of your first yearAt this point, you will have an opinionated view on the specific challenges that AI-first UI design & engineering challenges are, helping younger members of the team as well as other specialists to understand how to collaborate better to support high-standard UI engineering.By the end of this first year, you will have:Owned and championed the implementation of best practices for interaction design within the team, establishing clear guidelines for AI-specific UX patterns.Mentored junior engineers on best practices for designing and implementing AI-driven user interfaces.Designed & implemented production-grade features for AI solutions.Contributed with AI-specific UX expertise to solving problems that require AI expertise.Helped scoping and planning future AI development work.Further expanded our suite of eval metrics & techniques to simplify Agentic-AI dev.Consistent interactions with Engineering Leads across CTO to unblock shipping to prod.Represented Developer Enablement with regards to our AI-specific UX to stakeholders on multiple occasions.What will you bring? Here’s a list of what makes you a stronger fit to join our team:Strong expertise building modern frontend applications with React and TypeScript.Proficiency in JavaScript, React (or another UI framework), and TypeScriptExperience with state management libraries (redux, context API, zustand), for building wellstructured applications.Experience with storybook or componentised development.Proficiency in implementing streaming and real-time experiences (e.g., word/token streaming, live updates, progress/status indicators). Generated by Stylus Workspaces Internal Use Only 3Strong understanding of frontend architectures, state management, performance optimisation, and responsive design.Hands-on experience with...