Senior Frontend Engineer — Real-Time Finance UI

Citi; Greater London; Híbrido; GBP 90.000 - 130.000; Jornada completa

Descripción de la vacante

Citi in London is seeking a Senior UI Application Developer to design and build modern, high-performance interfaces for eTrading and Algo platforms. You will work with React/Angular/Vue, real-time data streams, and state management tools to deliver scalable UI systems that meet strict performance and reliability standards.

You will collaborate with product and tech teams, apply best practices across the full development lifecycle, and champion innovations in low-latency UI rendering while

Formación

• Strong hands-on experience with modern UI frameworks (React, Angular, or Vue)
• Solid understanding of real-time communication channels (WebSockets, HTTP streaming, SSE)
• Understanding of reactive programming paradigms (e.g., RxJS) and state management libraries (Redux, Zustand)
• Strong experience in distributed applications and architecture
• Expertise in design, development, performance tuning, and troubleshooting of UI applications
• Familiarity implementing styles based on UX designs
• Team player with excellent interpersonal, communication, and problem-solving skills
• Innovator - drives adoption of new approaches, solutions, and tools

Responsabilidades

• Design and develop modern, high-performance UI applications for eTrading and Algo platforms, including real-time data visualization (e.g., live pricing, order books, trade blotters)
• Utilize in-depth knowledge across multiple Applications Development areas to provide technical oversight across systems and applications
• Follow application development life cycle best practices and drive engineering excellence
• Balance time-to-market (client delivery) with proper governance, compliance, and audit mandates

Conocimientos

React/Angular/Vue

Real-time UI data

RxJS

Redux/Zustand

Distributed architecture

UI performance tuning

UX styling

Educación

Bachelor's degree

Herramientas

WebSockets

HTTP streaming

RxJS

Redux

Zustand

Descripción del empleo

Citi in London is seeking a Senior UI Application Developer to design and build modern, high-performance interfaces for eTrading and Algo platforms. You will work with React/Angular/Vue, real-time data streams, and state management tools to deliver scalable UI systems that meet strict performance and reliability standards.

You will collaborate with product and tech teams, apply best practices across the full development lifecycle, and champion innovations in low-latency UI rendering while