Senior AI Frontend Engineer (Developer Productivity), VP in Belfast

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 join a small, high-impact team challenging, modernising and 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 our engineers tens of minutes per day, equating to £10,000,000s of savings at Citi’s scale.

Your first 90 days: Become a citizen within Developer 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.
• Started raising the bar in our React.js codebase by introducing better componentisation, testing, and Storybook.
• Established a network of UI engineers across the organisation to contribute and learn about best practices.
• Gained buy-in from the team on architectural principles, ways of working and system requirements.

By the end of your first year: Own and champion best practices for AI-specific UX. 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 and implemented production-grade features for AI solutions.
• Contributed AI-specific UX expertise to solving problems that require AI knowledge.
• Helped scope and plan future AI development work.
• Expanded our 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 Developer Enablement with regards to our AI-specific UX to stakeholders on multiple occasions.

Key qualifications:

• 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 componentized 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 like LangChain / LangGraph / Vercel AI SDK / Google ADK (Agent Development Kit).
• Familiarity with CI/CD tools (e.g., Jenkins, Tekton, ArgoCD, Harness).

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 — your choice. 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 at home per week), and receive a competitive base salary (annually reviewed), plus a range of benefits:

• 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

Alongside these benefits, Citi is committed to ensuring our workplace is inclusive and welcoming for everyone. We want the best talent to join, stay, and thrive.