Role: We're seeking a Senior Frontend Engineer with a strong React/TypeScript background, passionate about solving hard UI challenges. You'll own the UI of our next-generation Developer Platform @ Citi. You'll be working on creating a near real-time UI application, solving cutting-edge UI problems, and even making data-visualisations. You'll collaborate closely with other Software Engineers and the Product team to create bleeding-edge interfaces. 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, all whilst using the latest coding tools (e.g. Claude Sonnet, Agent, Github Co-pilot, Cognition Devin). 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. We operate like a startup inside a global bank: shipping fast and experimenting. Your first 90 days First steps You will have built UI components of high quality (e.g. testing, storybook, etc) that have shipped to production. Network Have an established network of UI engineers across the organisation to contribute and learn about best practice. Design thinking Begun designing a UI architecture (maybe micro-front end) that takes into consideration linking together many components into a single a view, such as being able to connect a JIRA ticket to a deployment in production. Scaling up 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 UI; usingZustandas 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 year Ownership You'llown the UI implementations of complicated UI components and pushed the boundaries of good practice with excellentcomponentlibraries, good testing practices, and beautiful architectures. Boundary pushing Youwill haveimplemented advancedUI capabilitiesused by over 1,000s, such as micro front ends, plugin-architectures, or advanced data-visualisations in D3. Thought leader You will be noted as a valuable contributor to UI cross-team through your knowledge of UI and have taught other UI engineers about UI at scale. What will you bring? Strongexpertise(5-10 years) building modern frontend applications with React and TypeScript. Proficiencyin JavaScript, React (or another UI framework), and TypeScript Experience with state management libraries (redux, context API,zustand), for building well-structured applications. Experience withwebsocketsor event-streaming Experience with micro front-end desirable Experience with storybook or componentised development. Push the boundaries inanimation and data visualisation with tools like d3.js,reactflowor three.js Ability to innovate: Excited to push the boundaries in UI engineering to build next gen developer platforms. Tools and technologies you might use React, TypeScript, Vite, storybook, internal design systems State management:Zustand, context API, redux Microfront-endslike single-spa. Mac or PC -it'sup to you. Access to time-saving AI tools such as GitHub Copilot and Cognition.ai 's Devin. Why you'll love working here You'llshape the daily experience of tens of thousands of engineers at one of the largest engineering organisations in the world. You'llwork in a smallautonomous team,withimpact acrossourglobalorganisation. You'llget tocombine yourworld-classengineering skills to push boundaries otherscan'tand change the way internal platforms aremade. 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. (https://careers.citigroup.com/why-citi/global-benefits.html) 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. \LI-RH Job Family Group: Technology Job Family: Applications Development 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._ _If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review_ _Accessibility at Citi (https://www.citigroup.com/citi/accessibility/application-accessibility.htm)_ _._ _View Citi's_ _EEO Policy Statement (https://www.citigroup.com/global/eeo-aa-policy)_ _and the_ _Know Your Rights (https://www.eeoc.gov/sites/default/files/2023-06/22-088\_EEOC\_KnowYourRights6.12ScreenRdr.pdf)_ _poster._ Citi is an equal opportunity and affirmative action employer. Minority/Female/Veteran/Individuals with Disabilities/Sexual Orientation/Gender Identity.