Senior Frontend Developer

Citi; Greater London; Ibrido; GBP 90.000 - 130.000; Tempo pieno

Descrizione del lavoro

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

Competenze

• 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

Mansioni

• 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

Conoscenze

React/Angular/Vue

Real-time UI data

RxJS

Redux/Zustand

Distributed architecture

UI performance tuning

UX styling

Formazione

Bachelor's degree

Strumenti

WebSockets

HTTP streaming

RxJS

Redux

Zustand

Descrizione del lavoro

Job Overview 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.

Job Overview 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 Fixed Income eTrading team delivers eTrading strategy & provides market connectivity, price distribution, order management, RFQ management, Algo trading capability for Rates Products business. This role is for an individual who will leverage his/her skills to deliver solutions related to electronic trading implementations with key architectural and design decisions in the build out of global eTrading and Algo platform. The UI Application Senior Developer is responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology and product teams. The overall objective of this role is to lead applications systems analysis and programming activities. The candidate will have the opportunity to work in a fast-paced environment dedicated to delivering business value and to enhancing our competitive edge.

Responsibilities

• 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

Knowledge and Experience

• Proven experience designing, building, testing, maintaining, and supporting large-scale, high-performant UI applications using modern frontend technologies
• Strong experience handling real-time/streaming data in the UI layer (e.g., high-frequency price updates, live order status) with attention to performance and low latency
• Demonstrated ability to learn new business concepts and technologies quickly and thoroughly
• Experience following good development standards and practices
• Electronic trading (eTrading) experience is a plus but not required
• Financial industry experience and knowledge of Rates Products (Bonds, Swaps, Futures) is a plus

Qualifications

• 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

Education

• Bachelor's degree/University degree or equivalent experience

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.

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