Overview
We\'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 next-generation Developer Productivity platform at Citi, transforming complex AI capabilities — from chat interfaces to rich data visualizations — into intuitive, trustworthy experiences. You\'ll collaborate closely with AI, Software Engineers and the Product team to leverage bleeding-edge Generative AI. You\'ll be joining a small, high-impact team enhancing the experience of our 50,000 engineers globally throughout Citi\'s Software Development Life Cycle (SDLC).
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 engineers tens of minutes per day and delivering substantial savings at Citi\'s scale.
Your first 90 days
Your first 90 days — become a citizen within Development Enablement\'s AI & UX
By the end of your third month, you will have:
- Released to production a small new or enhanced AI-first user interface that will positively impact thousands of Software Engineers and Business Analysts working in Software Requirements Engineering.
- Raised the bar in our React.js codebase by improving componentization, testing, and Storybook adoption.
- Established a network of UI engineers across the organization to contribute and learn best practices.
- Gained buy-in from the team on architectural principles, ways of working and system requirements, for example potentially separating core logic from the framework in the UI and using a data layer such as Zustand to reduce response time where appropriate.
By the end of your first year
By the end of this first year
At this point, you will have an informed view on AI-first UI design and engineering challenges, helping newer team members and other specialists to collaborate effectively. By year end, you will have:
- Owned and championed 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 and implemented production-grade features for AI solutions.
- Contributed AI-specific UX expertise to solving problems that require AI capabilities.
- Helped scope and plan future AI development work.
- Expanded the suite of evaluation metrics and techniques to simplify Agentic-AI development.
- Maintained consistent interactions with Engineering Leads across CTO to unblock shipping to production.
- Represented Development Enablement in AI-specific UX discussions with stakeholders.
What will you bring?
What will you bring?
Here\'s a list of what makes you a stronger fit to join our team:
- Strong expertise (5–10+ years) building modern frontend applications with React and TypeScript.
- Proficiency in JavaScript, React (or another UI framework), and TypeScript.
- Experience with state management libraries (Redux, Context API, Zustand) for building well-structured 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).
- Strong understanding of frontend architectures, state management, performance optimization, and responsive design.
- Hands-on experience with tools such as LangChain, LangGraph, Vercel AI SDK, Google ADK (Agent Development Kit).
- Familiarity with CI/CD tools (e.g., Jenkins, Tekton, ArgoCD, Harness, etc.).
Tools and technologies you might use
- React, TypeScript, Next.js/Vite, Storybook, internal design systems, LangChain, Vercel AI SDK, LangGraph, Google ADK (Agent Development Kit).
- Mac or PC — choice is yours.
- Access to time-saving AI tools such as GitHub Copilot and Cognition.ai\'s Devin.
What we’ll provide you
By joining Citi Belfast, you will be part of a business casual workplace with a hybrid working model (up to 2 days working from home per week). You will receive a competitive base salary (annually reviewed) and enjoy a range of benefits including:
- 27 days annual leave (plus bank holidays)
- Discretionary annual performance-related bonus
- Private Medical Care & Life Insurance
- Employee Assistance Program
- Pension Plan
- Paid Parental Leave
- Special discounts for employees, family, and friends
- Access to learning and development resources
Note: This description includes Citi\'s Equal Employment Opportunity statement and related policies. Citi is an equal opportunity employer. If you require a reasonable accommodation during the application process, please review our Accessibility resources.
Visit our Global Benefits page to learn more.
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