Gaurav Kumar
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GitHub Activity

Tech Stack

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Experience

WidgIq

  • Built and shipped WidgIq — a production-grade, embeddable AI chatbot widget SDK, integrated across 11+ platforms.
  • Engineered a full RAG pipeline with concurrent crawling, domain filtering, and zero-downtime re-crawls via Firecrawl.
  • Architected the full stack solo — Next.js, tRPC, Drizzle ORM, Neon PostgreSQL, and Inngest.
  • Integrated pgvector for semantic search with cosine similarity thresholds for context-aware responses.
  • Designed real-time streaming AI responses for a ChatGPT-like chat experience.
  • Designed and implemented streaming AI responses for a real-time, ChatGPT-like chat experience.
  • Built a DB-driven widget config system with Next.js API caching and revalidateTag for instant, zero-redeploy updates.
  • Implemented full payments with Dodo Payments — webhook verification and automated credit sync tied to API key usage.
  • Hardened security with origin validation and Redis-based (Upstash) rate limiting.
  • Next.js
  • Better Auth
  • RAG Pipeline
  • TypeScript
  • Docker
  • tRPC
  • Google Cloud
  • React
  • Tailwind CSS
  • Node.js
  • Project Management
  • Preact
  • pgvector
  • Neon
  • Inngest
  • Drizzle ORM
  • Vercel
  • Porkbun
  • Dodo Payments
  • Redis
  • Upstash
  • SEO
  • Founded WidgIq, a B2B SaaS platform enabling businesses to embed AI-powered chat assistants into any website via a single script tag.
  • Sole decision-maker across product, engineering, design, and go-to-market strategy.
  • Business Ownership
  • Business Law
  • Business Tax
  • Business Strategy
  • Business Development
  • Product Management
  • Project Management
  • Marketing
  • Sales

Freelance

  • Built and deployed modern full-stack web applications.
  • Integrated AI Features, APIs, databases, and authentication systems.
  • Optimized application performance, scalability, and user experience.
  • Next.js
  • Strapi
  • Better Auth
  • TypeScript
  • Docker
  • tRPC
  • Google Cloud
  • React
  • Tailwind CSS
  • Node.js
  • Project Management
  • socket.io
  • WebRTC
  • RAG Pipeline
  • pgvector
  • Inngest

Open Source

  • Contributed to open-source full-stack web applications and developer tools.
  • Developed new features, fixed bugs, and improved application performance.
  • Collaborated with maintainers and contributors through pull requests and code reviews.
  • Worked with modern web technologies, APIs, databases, and authentication systems.
  • Improved code quality, documentation, and overall user experience.
  • Next.js
  • Better Auth
  • TypeScript
  • Docker
  • tRPC
  • Google Cloud
  • React
  • Tailwind CSS
  • Node.js
  • Project Management
  • socket.io
  • WebRTC
  • RAG Pipeline
  • pgvector
  • Inngest

Projects

WidgIq

WidgIq

Built an embeddable AI chatbot platform that integrates into any website with a single <script> tag. It delivers context-aware support using website content, with conversation history, request analytics, and AI-powered weekly insights.

Next.jsBetter AuthRAG PipelineTypeScripttRPCReactTailwind CSSPreactpgvectorInngestDrizzle ORMPorkbunDodo PaymentsRedisUpstash
BeBetter.ai

BeBetter.ai

BeBetter.ai is an AI-powered career platform that offers AI mock interviews, resume analysis, mock tests, personalized feedback, and job listings to help users prepare for and secure better career opportunities.

Next.jsBetter AuthTypeScripttRPCReactTailwind CSSNode.jsGemini APIUploadthingDrizzle ORMPolarImageKitInngestvercel

Testimonials

Gaurav delivered exactly what I needed. The website is fast, clean, and easy to use. Highly recommended!

Rahul Sharma

(Startup Founder)

Amazing experience! The design and performance of the project exceeded my expectations.

Neha Gupta

(Product Manager)

Let's work together

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© 2026 Gaurav. All rights reserved.