# Santosh Gautam — Full Stack Developer Portfolio

> Santosh Gautam is a Full Stack Developer & Software Engineer based in Delhi NCR (Gurugram), India, with 4+ years of professional experience and 20+ production projects shipped. He specializes in Vue.js, React.js, Node.js, SaaS platform development, AI-powered web applications, and WhatsApp Business API automation.

## About

- [About](https://www.hisantosh.com/about): Background, experience, and technical focus areas of Santosh Gautam, a Full Stack Developer & Software Architect from Gurugram, India.
- [Resume](https://www.hisantosh.com/resume): Professional resume covering 4+ years of Full Stack development across Vue.js, React.js, Node.js, SaaS, REST APIs, and WhatsApp automation.
- [Contact](https://www.hisantosh.com/contact): Contact page for freelance or full-time Full Stack Developer opportunities, available for remote and on-site roles in India.

## Services

- [Full Stack Developer India](https://www.hisantosh.com/full-stack-developer-india): Full stack developer services based in India NCR (Noida, Gurugram), using Vue 3, React, Node.js, and Slim PHP.
- [Node.js Developer](https://www.hisantosh.com/nodejs-developer): Backend development specializing in Node.js, REST API architecture, JWT authentication, and integrations using Express, Slim PHP, and Redis.
- [Vue.js Developer](https://www.hisantosh.com/vue-developer): Frontend development specializing in Vue.js (Vue 3, Vue 2, Pinia, Vue Router) and Vite SSG pre-rendered architectures.
- [React.js Developer](https://www.hisantosh.com/react-developer): React.js development including custom Gutenberg block plugins for WordPress WooCommerce, state management (Zustand/Redux), and Tailwind CSS SPAs.
- [SaaS Developer](https://www.hisantosh.com/saas-developer): SaaS application development — multi-tenant database modeling, subscription processing (Stripe, PayU), and API layers.
- [AI Web Developer](https://www.hisantosh.com/ai-web-developer): AI web application integration — LLM API setup, secure streaming middleware, and intelligent parser systems.
- [Software Developer](https://www.hisantosh.com/software-developer): System design, cloud server orchestration (Linode/GoDaddy), and clean Git workflows.
- [API Developer](https://www.hisantosh.com/api-developer): REST API development — JWT token authentication, webhook handlers, microservices, and database tuning (Redis/MySQL).
- [Freelance Developer](https://www.hisantosh.com/freelance-developer): Freelance full stack web development and software consulting — SaaS, API integration, performance tuning, and server setups.

## Projects

- [Projects](https://www.hisantosh.com/project): Overview of SaaS platforms, WhatsApp API integrations, WooCommerce plugins, REST APIs, and AI-powered applications built by Santosh Gautam.
- [Web Scrape Data Tool](https://www.hisantosh.com/project/web-scrape-data-tool): A Python & Playwright-based web scraping tool that downloads full websites (HTML, CSS, JavaScript, images) into a ZIP archive via a REST API.
- [WooCommerce Payment Gateway Boilerplate](https://www.hisantosh.com/project/woocommerce-payment-gateway-boilerplate): Open-source PHP boilerplate for building custom WooCommerce payment gateway plugins, supporting block & classic checkout and PayU integration.
- [WhatsApp API + WooCommerce Integration](https://www.hisantosh.com/project/whatsapp-api-integration-woocommerce): WhatsApp Business API integrated with WooCommerce for automated order notifications and customer communication.
- [PixGrow Image Optimizer](https://www.hisantosh.com/pixgrow-image-optimizer): Browser-based WordPress image optimizer using WebAssembly to convert images to WebP/AVIF locally, without API keys.

## Blog

- [Blog](https://www.hisantosh.com/blog): Technical articles on Vue.js, React.js, Node.js, SaaS development, JWT authentication, WhatsApp API, and AI-powered web applications.
- [Generative Engine Optimization (GEO) Guide](https://www.hisantosh.com/blog/generative-engine-optimization-guide): A guide to optimizing websites for AI search engines like ChatGPT, Gemini, Claude, and Perplexity.
- [How JWT Authentication Works](https://www.hisantosh.com/blog/how-jwt-works-authentication-guide): Step-by-step guide to JWT authentication — how JSON Web Tokens work and how to implement them in Node.js.
- [WooCommerce Payment Gateway Development Guide](https://www.hisantosh.com/blog/woocommerce-payment-gateway-development-guide): Practical guide to building a custom WooCommerce payment gateway from scratch.
- [Build an AI Chatbot with Claude API & Vue.js](https://www.hisantosh.com/blog/build-ai-chatbot-claude-api-vuejs): Tutorial on integrating Anthropic's Claude API with Vue.js to build an AI-powered chatbot.
- [WhatsApp Webhook Node.js Guide](https://www.hisantosh.com/blog/whatsapp-webhook-nodejs-signature-verification): Guide to integrating WhatsApp Business API webhooks with Node.js, covering HMAC-SHA256 signature verification and rate limiting.

## Optional

- [English Verbs List](https://www.hisantosh.com/blog/english-verbs-list): Reference list of English verbs for developer documentation and technical writing.