Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

The Mid-level UI Frontend Developer will be an integral part of the Identity Innovation space within the Cloud Technology Service department. This intermediate-level position is responsible for the design, development, and implementation of robust and intuitive user interfaces. The primary objective is to build production-grade frontend applications, predominantly using TypeScript and React.js, that enhance user experience, streamline workflows, and support the automation and cost reduction initiatives across the firm. The successful candidate will ensure high-quality visual and functional standards are met within existing and planned technology frameworks, contributing to the strategic evolution of our cloud-based identity services.

Responsibilities

• Design, develop, and maintain high-quality, responsive, and performant user interfaces using TypeScript, React.js, and modern frontend technologies.
• Implement state management solutions (e.g., Redux, Redux Toolkit) to ensure scalable and maintainable application state.
• Collaborate with UI/UX designers, backend developers, and product owners to translate requirements into engaging and user-friendly web experiences.
• Integrate frontend applications with various APIs and ensure seamless data flow and authentication (e.g., via OAuth-2 for SSO).
• Develop reusable UI components and maintain a component storybook for consistency and efficiency across projects.
• Ensure the technical feasibility of UI/UX designs and optimize applications for maximum speed and scalability.
• Write comprehensive unit and integration tests for frontend components and applications.
• Participate in code reviews, mentor junior team members, and contribute to continuous improvement of frontend development processes and best practices.
• Ensure solutions and processes are in accordance with audit initiatives and requirements, consulting with Business Information Security Officers (BISOs) and Technology Information Security Officers (TISOs) as needed.
• Appropriately assess risk when making technical decisions, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients, and assets, by driving compliance with applicable laws, rules, and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct, and business practices, and escalating, managing, and reporting control issues with transparency.

Qualifications

• Proven relevant experience in a Frontend Engineering role, with a strong focus on UI development.
• Demonstrated experience working in a large, complex, and/or global environment, preferably within Financial Services.
• Proven ability to manage technical projects or significant project components effectively.
• Consistently demonstrates clear and concise written and verbal communication skills, especially in technical contexts.
• Comprehensive understanding of software design principles, frontend architecture, and analytics tools to identify best practices.
• Demonstrated analytic and diagnostic skills for troubleshooting and problem-solving.
• Ability to work effectively in a matrix environment and partner with virtual teams.
• Ability to work independently, prioritize tasks, and take ownership of various parts of a project or initiative from conception to deployment.
• Ability to work under pressure and manage tight deadlines or unexpected changes in expectations or requirements in a fast-paced development environment.
• Proven track record of contributing to operational process change and improvement through technical solutions.

Education

• Bachelor’s degree/University degree in Computer Science, Engineering, or a related field, or equivalent experience.

Must-Have Skills

• Programming Languages:

TypeScript

• Frontend Frameworks:

React.js Fundamentals

• State Management:

Redux, Redux Toolkit

• Styling:

CSS, and experience with styling-in-JS libraries or pre/post-processors

• Routing:

Client-side routing in React applications

• API Integration:

Experience consuming RESTful APIs

• Build Tools:

Webpack, Vite

• Authentication:

Integration with SSO and Authentication providers via OAuth-2

• Version Control:

Git

• Testing Frameworks:

Experience with Jest, React Testing Library, Cypress, or similar

• Component Documentation:

Component Storybook

• Containerization:

Docker, Kubernetes

Nice-to-Have Skills:

• Frontend Frameworks:

Experience with Next.js or Gatsby

• Advanced State Management:

Familiarity with modern solutions like Recoil, Zustand, or Jotai

• Performance Optimization:

Techniques for optimizing web application performance

• Real-time Communication:

Experience with Web Sockets

• An additional programming language like Python is a plus

What we’ll 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

Visit our Global Benefits page to learn more.

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 energized to join us, motivated to stay and empowered to thrive.

Job Family Group:

Technology

Job Family:

Systems & Engineering:

Time Type:

Full time

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.

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