Senior Frontend Developer

Posted 3 Hours Ago
Be an Early Applicant
London, England, GBR
In-Office
Senior level
Financial Services
The Role
Design, develop, test, and support high-performance frontend applications for global electronic trading and algorithmic trading platforms. Build real-time data visualizations for pricing, order books, and trade blotters using streaming data and modern UI frameworks. Provide technical oversight, optimize performance and latency, follow application lifecycle and governance standards, and collaborate with technology and product teams to deliver scalable solutions.
Summary Generated by Built In

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

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Job Family Group: Technology

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Job Family:Applications Development

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Time Type:Full time

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Most Relevant Skills Please see the requirements listed above.

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Other Relevant Skills For complementary skills, please see above and/or contact the recruiter.

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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.
View Citi’s EEO Policy Statement and the Know Your Rights poster.

Skills Required

  • Strong hands-on experience with modern UI frameworks such as React, Angular, or Vue
  • Strong understanding of real-time communication channels, including WebSockets, HTTP streaming, or SSE
  • Understanding of reactive programming paradigms such as RxJS and state management libraries such as Redux or Zustand
  • Strong experience with distributed applications and architecture
  • Expertise in UI application design, development, performance tuning, and troubleshooting
  • Familiarity with implementing styles based on UX designs
  • Experience designing, building, testing, maintaining, and supporting large-scale, high-performance UI applications
  • Experience handling real-time or streaming data in the UI layer with attention to performance and low latency
  • Experience following good development standards and practices
  • Teamwork, interpersonal communication, and problem-solving skills
  • Bachelor's degree, university degree, or equivalent experience
  • Electronic trading experience
  • Financial industry experience and knowledge of rates products such as bonds, swaps, or futures
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The Company
HQ: New York, NY
226,610 Employees
Year Founded: 1998

What We Do

Citigroup is a global diversified financial services holding company serving consumers, corporations, governments and institutions. It provides consumer banking and credit, corporate and investment banking, securities brokerage, trade and securities services, and wealth management. Operating across nearly 160 countries and jurisdictions, Citi aims to be a leading partner for institutions with cross-border needs, a global wealth manager, and a valued personal bank in the United States.

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