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UI Lead

Ascendion

City Of London

Hybrid

GBP 70,000 - 90,000

Full time

2 days ago
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Job summary

A leading financial technology firm seeks a UI Lead to drive the development of their Single Dealer Platform. The candidate will utilize expertise in React and RxJS to create robust, high-performance trading interfaces. Responsibilities include leading a team, collaborating with various stakeholders, and ensuring integration with backend services. Ideal candidates will have strong leadership, communication skills, and a thorough understanding of the financial domain. The position offers a hybrid working model.

Qualifications

  • Strong proficiency in React with hooks and state management.
  • Advanced RxJS knowledge for event-driven applications.
  • Experience with HTML5, CSS3, TypeScript and real-time data.

Responsibilities

  • Own the front-end architecture design for the platform.
  • Collaborate with cross-functional teams for user experiences.
  • Guide and mentor UI engineers to ensure coding best practices.

Skills

React
RxJS
Leadership
UI Technologies
Problem-solving

Tools

Vitest
Playwright
Storybook
Job description
Title: UI Lead
Location: Bromley, UK
Job Type: Hybrid 3/Day WFO
Job Description:

We are seeking a highly skilled UI Developer to spearhead the development of the Single Dealer Platform within our Electronic Fixed Income & Currencies business. The ideal candidate will have deep expertise in React, RxJS, and modern UI frameworks, combined with strong leadership and architectural skills to deliver high-performance, scalable, and intuitive trading interfaces.

Key Responsibilities:
  • Lead UI Development: Own the design and implementation of the front-end architecture for the SDP.
  • Collaborate with Stakeholders: Work closely with product managers, UX designers, and backend teams to deliver seamless user experiences.
  • Technical Leadership: Mentor and guide a team of UI engineers, ensuring best practices in coding, testing, and performance optimization.
  • Integration: Ensure smooth integration with Java-based backend services and real-time data streams.
  • Performance & Scalability: Optimize UI for low-latency, high-frequency trading environments.
  • Innovation: Stay ahead of emerging technologies and propose improvements to enhance platform capabilities.
Required Skills & Experience:

Core Expertise:

  • Strong proficiency in React (Hooks, Context API, Redux or similar state management).
  • Advanced knowledge of RxJS for reactive programming and event-driven architectures.

UI Technologies:

  • HTML5, CSS3, TypeScript, Vite, OpenFin etc.
  • Experience with real-time data visualization and WebSockets.

Architecture & Design:

  • Micro-frontend architecture, modular design principles.

Testing & Quality:

  • Vitest , Playwright, Storybook or similar testing frameworks.

Financial Domain Knowledge:

  • Understanding of Fixed Income, FX, and electronic trading workflows is highly desirable.

Soft Skills:

  • Strong leadership and communication skills.
  • Ability to work in a fast-paced, agile environment.
  • Problem-solving mindset with attention to detail
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