Harish Garg

Hi, I’m Harish Garg — a passionate Fullstack Web Developer with good experience in Devops, Web automation, Data extraction, building multi agent systems.

I recently built Spraykaro.com, a full-stack eCommerce platform using Next.js, Node.js, PostgreSQL, Redis, and Strapi. It integrates Razorpay, Shiprocket, BullMQ, and WAHA API, and handles 10k+ daily users with strong SEO (ranking on Google’s first page). I also built abandoned cart flows and WhatsApp-based offer systems.

Currently, I’m working on an AI-powered Notion template builder using LangGraphJS, LangChain, and Playwright to overcome API limitations via custom agents and graph-based context. Would love to connect and explore opportunities to contribute and grow!

Built Spraykaro.com, an agricultural eCommerce platform I developed entirely from scratch for my family’s business. I led and handled every aspect — design, frontend, backend, SEO, deployment, performance, and analytics — using tools such as Next.js, Node.js, PostgreSQL, and Strapi. The platform integrates: 
- Razorpay for payment processing 
- Shiprocket for logistics 
- BullMQ + Redis for managing order and message queues 
- WAHA API for automated WhatsApp messaging, also handles automatic carts and providing coupons and offers to user automatically based on their interactions 
- Twilio for secure OTP-based login 
- Cloudinary, Shadcn, Zod, and TailwindCSS for responsive UI 
- Sentry, NextAuth, React Hook Form, Semrush, and Google Analytics for observability, auth, and optimization 

Within 2 months of launch, Spraykaro reached 10,000+ daily users and ranks on the first page of Google for several major keywords. Everything is deployed on DigitalOcean with strong caching strategies and ongoing SEO improvements.

Done B.E Computer Engineering from Thapar Institute of Engineering and Technology.