React.js UI Developer

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.

For more information on how we process your personal data, please refer to HCLTech’ s Candidate Data Privacy Notice. Job Description: UI Developer (React, TypeScript and Low-Latency) 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.