React Developer

Happiest Minds Technologies; Bengaluru; On-site; INR 900,000 - 1,300,000; Full time

Job summary

Happiest Minds Technologies in Bengaluru, India, is seeking a skilled React.js Developer to build AI-enabled web applications and collaborate with AI engineers, UI/UX designers, and product teams. You will specialize in React.js, JavaScript/TypeScript, REST APIs, and state management, with hands-on AI integration experience.

The role emphasizes delivering scalable, secure, and high-performance frontend solutions, including AI-powered features, semantic search, and conversational interfaces,

Qualifications

• Proficient in building modern web UI with React.js.
• Strong knowledge of JavaScript/TypeScript and REST APIs.
• Experience with responsive design and accessibility standards.

Responsibilities

• Design and develop responsive, reusable, and scalable React.js applications.
• Build reusable UI components using React Hooks and functional components.
• Optimize applications for speed, scalability, and performance.
• Implement responsive layouts using HTML5, CSS3, Tailwind, Bootstrap, or Material UI.
• Ensure cross-browser compatibility and accessibility compliance.
• Integrate AI services/APIs and build AI-powered frontend features including chat interfaces and content generation.

Skills

React.js

JavaScript

TypeScript

HTML5

CSS3

Responsive Web Design

Job description

Job Title:

React.js Developer (AI-Enabled Applications)

Job Summary

We are looking for a skilled React.js Developer with experience in building modern web applications and integrating AI-powered features. The ideal candidate should have strong expertise in React.js, JavaScript/TypeScript, REST APIs, and state management, along with hands‑on experience integrating Large Language Models (LLMs), AI APIs, or AI-powered workflows into frontend applications.

The candidate will collaborate with UI/UX designers, backend developers, AI engineers, and product teams to deliver scalable, secure, and high-performance AI-enabled web applications.

Key Responsibilities

Frontend Development

• Design and develop responsive, reusable, and scalable React.js applications.
• Build reusable UI components using React Hooks and functional components.
• Optimize applications for speed, scalability, and performance.
• Implement responsive layouts using HTML5, CSS3, Tailwind CSS, Bootstrap, or Material UI.
• Ensure cross-browser compatibility and accessibility standards.

AI Integration

• Integrate AI services such as OpenAI, Azure OpenAI, Anthropic Claude, Google Gemini, or similar APIs.
• Build conversational interfaces (AI Chatbots).
• Implement AI-assisted features including:
• Text generation
• Summarization
• Document search
• Question Answering
• AI recommendations
• Semantic search
• Consume streaming API responses for real-time AI interactions.
• Work with Retrieval-Augmented Generation (RAG) based applications.
• Handle prompt engineering from frontend applications.
• Display AI-generated responses with proper formatting and markdown rendering.

Required Technical Skills

• React.js (v18+)
• JavaScript (ES6+)
• TypeScript
• HTML5
• CSS3
• Responsive Web Design