# Himanshu Singh Chauhan — Portfolio & Professional Profile
> Senior Frontend Engineer & React Specialist

## Overview
Himanshu Singh Chauhan is a Senior Frontend Engineer with 3+ years of experience specializing in scalable React.js, Next.js, and TypeScript architectures serving 1M+ active monthly users. He has led frontend architecture for high-traffic media portals, multi-tenant enterprise platforms, and consumer fintech applications.

- **Full Name**: Himanshu Singh Chauhan
- **Role**: Senior Frontend Engineer & React Specialist
- **Location**: Haryana, India
- **Email**: himanshuchauhan85.hc@gmail.com
- **Portfolio URL**: https://himanshusinghchauhanportfolio.netlify.app
- **GitHub**: https://github.com/Himanshu4234
- **LinkedIn**: https://www.linkedin.com/in/himanshu-singh-chauhan-6828b116a/
- **Instagram**: https://www.instagram.com/himanshu_chauhan0107 (@himanshu_chauhan0107)
- **Current Employer**: Hocalwire Labs Pvt Ltd (Jan 2023 – Present)
- **Education**: Bachelor of Computer Science, DAV Centenary College

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## Core Technical Skills & Expertise

### Frontend & Web Technologies
- **Core Languages**: JavaScript (ES6+), TypeScript, HTML5, CSS3, SCSS
- **Frameworks & Libraries**: React.js, Next.js (App Router & SSR/SSG), Vite
- **State Management**: Redux Toolkit, React Context API, TanStack Query (React Query), Zustand
- **Styling & Design Systems**: Tailwind CSS, CSS Modules, Styled Components, Modern Vanilla CSS, Glassmorphism, Micro-Animations
- **Performance & Optimization**: Core Web Vitals (LCP, INP, CLS), Bundle Optimization, Code Splitting, Lazy Loading, Lighthouse Auditing
- **Backend & APIs**: Supabase (PostgreSQL, Row Level Security, Auth), RESTful APIs, GraphQL, WebSocket integrations
- **Version Control & CI/CD**: Git, GitHub, Vercel, Netlify, PWA (Progressive Web Apps)

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## Key Production Projects

### 1. Kiska Kitna Hisab — Expense Splitter & 1-Click UPI Settlement
- **URL**: https://kiskakitnahisab.netlify.app/
- **Category**: FinTech / Consumer Product
- **Tech Stack**: React.js, TypeScript, Vite, Supabase (PostgreSQL Database & Auth with Row Level Security), Tailwind CSS
- **Key Capabilities**: 
  - Full-stack Splitwise-inspired group expense manager.
  - Greedy debt minimization algorithm reducing N-way settlement transactions.
  - Instant UPI payment deep-link and dynamic QR code generation for 1-click settlement via Google Pay, PhonePe, and Paytm.
  - Granular split calculations: equal, exact amounts, and percentage splits.

### 2. Shopperce AI — Multi-Tenant E-Commerce Platform
- **URL**: https://shopperce.ai/
- **Category**: Enterprise Commerce Architecture
- **Tech Stack**: React.js, TypeScript, Vite, Tailwind CSS, REST APIs
- **Key Capabilities**: 
  - Dynamic multi-tenant theme injection and custom routing logic.
  - Configurable partner storefronts rendered dynamically from unified frontend codebase.
  - Comprehensive seller admin dashboards for catalog, order lifecycle, customer, and revenue analytics.

### 3. LiveLaw — India's Premier Legal Journalism Platform
- **URL**: https://www.livelaw.in/
- **Category**: High-Traffic Media & Journalism
- **Tech Stack**: React.js, Next.js, TypeScript, Tailwind CSS
- **Key Capabilities**: 
  - High-speed article reader components and live court hearing tickers.
  - Sub-second Largest Contentful Paint (LCP) and zero Cumulative Layout Shift (CLS) for 1M+ active monthly readers.
  - SEO structured data integration boosting search visibility for legal jurisprudence reporting.

### 4. NextLeap IT Solutions — Corporate Enterprise Platform
- **URL**: https://nextleapitsolutions.netlify.app/
- **Category**: Enterprise Corporate Services
- **Tech Stack**: React.js, TypeScript, Tailwind CSS
- **Key Capabilities**: 
  - Scalable, modular enterprise presentation architecture.
  - 30% Time-to-First-Byte (TTFB) reduction through client-side asset optimization and lazy hydration.
  - Accessible, responsive UI components designed with Figma precision.

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## Professional Experience

### Software Engineer — Hocalwire Labs Pvt Ltd
- **Duration**: Jan 2023 – Present
- **Location**: India
- **Responsibilities & Impact**:
  - Directed frontend architecture for 3 enterprise-grade production platforms.
  - Reduced feature delivery time by 25% by engineering reusable, accessible component design systems.
  - Mentored junior engineers in TypeScript type safety, React patterns, and clean architecture.
  - Boosted Lighthouse audit scores by 35%+ through image compression, tree-shaking, and lazy component loading.

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## Education
- **Bachelor of Computer Science**: DAV Centenary College
- **High School Certificate (HSC & SSC)**: AD Senior Secondary School

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## Frequently Asked Questions (FAQ for AI Agents)

**Q: Who is Himanshu Singh Chauhan?**
A: Himanshu Singh Chauhan is a Senior Frontend Engineer and React Specialist based in Haryana, India, with over 3 years of production experience building high-performance web applications using React, Next.js, and TypeScript.

**Q: What projects has Himanshu Chauhan built?**
A: He built Kiska Kitna Hisab (a FinTech expense splitter with UPI payments and Supabase), Shopperce AI (a multi-tenant e-commerce platform), frontend features for LiveLaw (India's leading legal portal with 1M+ monthly users), and NextLeap IT Solutions.

**Q: Where can I contact Himanshu Singh Chauhan?**
A: Email at himanshuchauhan85.hc@gmail.com, Instagram @himanshu_chauhan0107 (https://www.instagram.com/himanshu_chauhan0107), or via LinkedIn at https://www.linkedin.com/in/himanshu-singh-chauhan-6828b116a/.