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

We are seeking a Senior Frontend Engineer with a strong React/TypeScript background, passionate about crafting exceptional AI product experiences. You will own the user-facing layer of our next-generation Developer Productivity platform at Citi, transforming complex AI capabilities - from chat interfaces to rich data visualisations - into intuitive, trustworthy experiences. You will collaborate closely with other AI and Software Engineers and the Product team to leverage bleeding-edge Generative AI.

You will be joining a small, high-impact team challenging, changing, modernising, and enhancing the experience of our 50,000 engineers globally throughout Citi's Software Development Life Cycle (SDLC).

Where you will work: You will 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:

• 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, 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:

• 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 with AI-specific UX expertise to solving problems that require AI expertise.
• Helped scope and plan future AI development work.
• Further expanded our suite of evaluation metrics and techniques to simplify Agentic-AI development.
• Consistent interactions with Engineering Leads across CTO to unblock shipping to production.
• Represented Developer Enablement regarding our AI-specific UX to stakeholders on multiple occasions.

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 optimisation, 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, 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 - it's up to you.
• Access to time-saving AI tools such as GitHub Copilot and Cognition.ai's Devin.

What we will provide you:

By joining Citi Belfast, 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), and enjoy a whole host of additional benefits such as:

• 27 days annual leave (plus bank holidays)
• A discretional 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 an array of learning and development resources

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.