Senior Frontend Developer

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Overview

We are seeking a Senior Front-End Developer to join a high-profile team in a global investment bank, tasked with delivering a next-generation single-page application (SPA) platform for high-performance derivatives trading. In this cutting-edge role, the developer will collaborate with a team of elite engineers to create resilient, high-performance user interfaces, utilizing modern web technologies while focusing on real-time data and functional programming paradigms. This position offers flexible working arrangements with only one day per week required on-site.

Responsibilities

  • Collaborate with engineers to develop a SPA for derivatives trading.
  • Build high-performance user interfaces with real-time data updates.
  • Design a front-end architecture prioritizing performance and usability.
  • Utilize modern web technologies in a fast-paced, agile environment.
  • Implement functional programming techniques using immutable data structures.
  • Integrate LLMs and agent-mode AI tools to improve development workflows.
  • Ensure the delivery of performance-critical applications.

Requirements

  • Strong experience with TypeScript, ES6, HTML5, and advanced CSS.
  • Proven track record in delivering high-performance SPAs in front-office trading environments.
  • Proficiency in functional and reactive programming.
  • Strong attention to UI/UX design principles.
  • Ability to work collaboratively within high-performing teams.
  • Daily use of LLMs and agent-mode AI tools is preferred.
  • Experience with RxJS, Angular + NgRx, or React + Redux is a plus.
  • Full-stack experience using a typed backend language like Java, C#, or F# is desirable.
SkillsC#, HTML, Java, TypeScript, Angular, React, Agile, UX Design
LocationLondon
TypeHybrid
Rate£750/day
SourceLinkedIn
Posted19/11/25