Hello, I'm

I build full-stack products and ship AI features that actually go to production — from agentic Claude workflows to payment-grade e-commerce.

Samarth Mishra

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Lines of TypeScript shipped

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AI storybooks generated

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API routes built

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LeetCode problems solved

About Samarth Mishra

About Me

I'm a full-stack developer who ships AI features to production. I build 4-role SaaS platforms in Next.js, React and TypeScript on MongoDB, and I'm deep in the Anthropic Claude SDK — forced tool-use with strict JSON schemas, streaming NDJSON protocols, and multi-turn agentic loops. I also handle the unglamorous, money-critical parts: Razorpay HMAC-verified payments, Delhivery logistics, and WhatsApp cart recovery. I care about code that holds up under real users and real money.

Languages

  • JavaScript / TypeScript
  • C++
  • Python
  • SQL

Frameworks & Libraries

  • Next.js
  • React.js
  • Express.js
  • FastAPI
  • Tailwind CSS
  • Mongoose
  • Zod
  • React Hook Form

AI & APIs

  • Anthropic Claude SDK
  • HeyGen LiveAvatar
  • Razorpay
  • Delhivery
  • WATI
  • Resend
  • Bunny CDN / Stream

Databases & Cloud

  • MongoDB Atlas
  • PostgreSQL
  • Supabase
  • AWS
  • Vercel
  • Docker

Tools

  • Git
  • VS Code
  • Excalidraw API
  • TUS Protocol
  • HLS.js

My Projects

  • Examina
    Jan 2026 – Present

    Upload a PDF and Claude generates a course roadmap via forced tool use (strict JSON schema). Students watch an AI tutor draw on Excalidraw with a HeyGen lip-synced avatar over WebRTC — first content in ~3s. Engineered a streaming NDJSON protocol (12 command types) with a two-loop CommandScheduler pairing draws + narration in real time, every line Zod-validated.

    • Next.js 14
    • TypeScript
    • Claude Sonnet/Haiku
    • HeyGen LiveAvatar
    • Excalidraw
    • MongoDB
  • ARA Store
    Jul – Dec 2025

    A 4,700+ LOC production storefront: Razorpay with HMAC-SHA256 verification and a server-recomputed 5% prepaid discount to block client-side tampering. WhatsApp abandoned-cart recovery via Vercel Cron + TTL-indexed MongoDB drafts and one-tap WATI resume. End-to-end Delhivery logistics (auto-AWB on payment), a 5-stage tracking stepper, a coupon engine, and a 7-event Meta Pixel funnel.

    • Next.js 16
    • React 19
    • Razorpay
    • Delhivery
    • WATI
    • MongoDB
    • Vercel
  • Yuvichaar Funnels Platform
    Mar – Jun 2025

    Token-gated e-signature + payment flow: signed Razorpay HMAC-SHA256 verification, a pdf-lib signed PDF generated server-side and emailed via Resend with an idempotency guard against duplicate sends. Resumable large-file uploads over the TUS protocol straight to Bunny Stream, with a 24-hour SHA-256 auth signature keeping the API key off the client and HLS playback with a custom hover-preview hook.

    • Next.js 16
    • React 19
    • MongoDB
    • Razorpay
    • Claude SDK
    • Bunny CDN
  • NSS MMMUT Website
    Sep 2024 – Jan 2025

    The official site for the 500+ volunteers of NSS MMMUT. Processed ₹70,000+ in donations through Razorpay and improved request-resolution efficiency by 30%.

    • React
    • TailwindCSS
    • Supabase
    • Razorpay

Freelancing

Available for freelance work — from frontend builds to full-stack apps and production AI integrations.

  • 🎨

    Frontend Development

    Pixel-accurate, responsive React / Next.js interfaces with Tailwind — fast, accessible, and animation-ready.

  • 🧩

    Full-Stack Web App

    End-to-end product builds: Next.js + MongoDB, auth, dashboards, REST APIs and payments — shipped to production.

  • 🤖

    AI Integration & Agentic Workflows

    Claude SDK integrations done right: tool-use with strict schemas, streaming protocols, RAG, and multi-turn agentic loops.

Let's Connect

I'm currently looking for new opportunities, my inbox is always open. Whether you have a question or just want to say hi, I'll try my best to get back to you!

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