UX Engineer (TypeScript + React) — Real-Time Finance UI, WFH

Client Server Limited; Greater London; Hybrid; GBP 50,000 - 60,000; Full time

Benefits offered by this job

Private Medical Healthcare incl.Dental

Pension

Employee Wellness Programme

Training budget

Summer time hours

Job summary

Client Server Limited is seeking a UX Engineer / Developer in London with strong React and TypeScript skills to build intuitive, data-rich frontends. You will work on real-time market data interfaces and risk management UIs, collaborating with design and backend teams to ensure a scalable frontend architecture.

You will join a tech-driven finance environment, using AI-assisted development and modern tooling to deliver high-quality experiences across order and risk systems.

Qualifications

• Strong React and TypeScript development skills with excellent CSS/UI implementation.
• Experience with state management and data fetching libraries (Zustand, TanStack Query).
• Experience writing clean, maintainable, testable code with Vitest and Playwright.
• Experience integrating REST APIs and OpenAPI specifications.
• Attention to detail and passion for usability, visual consistency, high quality UX.
• Hands-on experience with AI-assisted development tools and agentic workflows.
• Proactive, able to take ownership of work independently.

Responsibilities

• Deliver end-to-end frontend features across front-to-back systems (order and risk management).
• Collaborate with design and backend teams to improve UI design principles and frontend architecture.
• Develop real-time interfaces, data visualisations and high-performance data grids.
• Establish WebSocket communications and improve state/data management in a frontend monorepo.
• Leverage AI tools to improve development efficiency and integrations with Figma and MCP.

Skills

React

TypeScript

CSS/UI

State management

Zustand

TanStack Query

Vitest

Playwright

OpenAPI

AI assisted development

Problem solving

Education

Bachelor's degree in Computer Science or similar

Tools

Zustand

TanStack Query

Vitest

Playwright

OpenAPI

Figma

MCP

Job description

Client Server Limited is seeking a UX Engineer / Developer in London with strong React and TypeScript skills to build intuitive, data-rich frontends. You will work on real-time market data interfaces and risk management UIs, collaborating with design and backend teams to ensure a scalable frontend architecture.

You will join a tech-driven finance environment, using AI-assisted development and modern tooling to deliver high-quality experiences across order and risk systems.