Senior Technical Specialist
United Kingdom
Job Description
Senior Technical Specialist
City Of London, England

Job Summary

To conceptualize, design and deliver product / sustenance delivery through the team as per defined scope,by adopting industry-leading practices, thus contributing significantly to the advancement and success of the project.

Key Responsibilities

Job Description: UI Developer (React / TypeScript)

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

 

Skill Requirements

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Other Requirements

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Information at a Glance

Why HCLTech?

At HCLTech, you'll supercharge your potential. You'll find your career. And you'll find your spark. All at a place that knows that helping its customers stay on top starts by putting its people first.

HCLTech is a global technology company, home to more than 223,000 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, 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 12 months ending June 2026 totaled $14.8 billion.