Senior Frontend Developer

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Overview

We are seeking a Senior Front-End Developer to join a prestigious investment banking team on a contract basis. In this role, you will contribute to the development of a high-performance, next-generation single-page application (SPA) for derivatives trading, collaborating with elite engineers in a fast-paced, agile environment. You will design and build resilient user interfaces that leverage real-time data, while only being required to work on-site one day a week in London.

Responsibilities

  • Collaborate with engineers to develop and enhance a SPA for derivatives trading.
  • Build high-performance user interfaces with real-time data capabilities.
  • Design front-end architecture focused on resilience, performance, and usability.
  • Utilize modern web technologies in an agile development environment.
  • Implement functional and reactive programming paradigms.
  • Ensure UI/UX design standards are met for intuitive product delivery.
  • Use LLMs and AI tools to improve the development workflow.

Requirements

  • Strong experience with TypeScript, ES6, HTML5, and advanced CSS.
  • Proven track record of delivering performance-critical SPAs in trading or high-frequency environments.
  • Proficiency in functional and reactive programming using immutable data.
  • Excellent attention to UI/UX detail with a passion for building intuitive products.
  • Ability to work effectively in high-performance collaborative teams.
  • Familiarity with LLMs and agent-mode AI tools for development enhancement.
  • RxJS experience is a plus, as well as knowledge of Angular + NgRx or React + Redux.
  • Full stack experience with a typed backend language such as Java, C#, or F# is advantageous.
SkillsAgile, TypeScript, HTML, UX Design, Angular, React, Java, C#
LocationLondon
TypeHybrid
Rate
£800/day
SourceLinkedIn
RecruiterCipherTek Recruitment
Posted22/07/26