Frontend Architect - React AI

HCLTech; Slough; On-site; GBP 55,000 - 85,000; Full time

Job summary

HCLTech is seeking a UI Developer with strong React, TypeScript and AI experience to build time-critical, high-availability web interfaces. You will own the full UI development lifecycle from design through deployment, collaborating with backend engineers, QA, and product teams to deliver scalable user experiences.

The role requires hands-on expertise in modern frontend stacks, real-time communication, and robust testing using React Testing Library and Jest; familiarity with micro-frontends,

Qualifications

• Frontend technologies: HTML, CSS, JavaScript, React, and TypeScript.
• Real-time communication: WebSockets, SSE, REST APIs.
• State management and reactive programming (Redux).
• Micro-frontends and SPAs knowledge.
• Testing with React Testing Library and Jest.
• UI automation tools like Playwright or Cypress (nice to have).

Skills

HTML

CSS

JavaScript

React

TypeScript

WebSockets

SSE

REST APIs

Redux

SPA

Playwright

Cypress

Tools

React Testing Library

Jest

Playwright

Cypress

Job description

HCLTech is a global technology company, home to 219,000+ people across 54 countries, delivering industry-leading capabilities centered on digital, engineering and cloud, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of $13+ billion.

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Job Description: UI Developer (React, TypeScript and AI)

Role Overview-

We are seeking a highly skilled UI Developer with strong expertise in building time-critical, high-availability, and high-performance applications. The ideal candidate will have hands-on experience across the full UI development lifecycle, including design, development, testing, and deployment.

Technical Skills & Expertise-

• Frontend Technologies: Expert-level proficiency in HTML, CSS, JavaScript, React, and TypeScript
• Real-Time Communication: Strong understanding of WebSockets, Server-Sent Events (SSE), and REST APIs
• State Management & Programming: Solid experience with state management libraries (e.g., Redux) and reactive programming paradigms
• Architecture: Strong understanding of micro-frontends and Single Page Applications (SPA)
• Testing: Hands-on experience with React Testing Library / Jest for unit and integration testing
• UI Automation (Good to Have): Exposure to frameworks like Playwright or Cypress

Desired Experience

• Experience working on financial services or trading platforms is an advantage
• Strong understanding of performance optimization and low-latency UI applications
• Experience with highly available, mission-critical systems.