Real-Time React UI Architect - Low-Latency

HCLTech; City Of London; On-site; GBP 75,000 - 110,000; Full time

Job summary

HCLTech is seeking a UI Developer with expert React, TypeScript and low-latency focus to build time-critical, high-availability web applications. You will contribute across the full UI development lifecycle, from design through testing and deployment, delivering high-performance interfaces.

The ideal candidate will have hands-on experience with HTML, CSS, JavaScript, React and Redux, plus real-time communication via WebSockets/SSE and testing with RTL/Jest.

Qualifications

• Hands-on experience in building time-critical, high-availability UI applications.
• Experience across the full UI development lifecycle: design, development, testing and deployment.
• Strong skills in modern UI tech and performance optimization.

Responsibilities

Skills

HTML/CSS/JS

React

TypeScript

WebSockets

SSE

Redux

Unit testing (RTL/Jest)

Playwright

Cypress

Tools

Playwright

Cypress

Job description

HCLTech is seeking a UI Developer with expert React, TypeScript and low-latency focus to build time-critical, high-availability web applications. You will contribute across the full UI development lifecycle, from design through testing and deployment, delivering high-performance interfaces.

The ideal candidate will have hands-on experience with HTML, CSS, JavaScript, React and Redux, plus real-time communication via WebSockets/SSE and testing with RTL/Jest.