About

Engineering with product clarity

A story of building real systems—balancing technical depth with the discipline to ship.

Himanshu Karnwal

Senior full-stack developer with 5+ years of freelance experience designing and delivering scalable web, mobile, and browser-based applications. Proficient in React, Next.js, Node.js, NestJS, and cloud deployments. Strong command of system design, real-time architectures, RBAC, multi-tenant SaaS platforms, and CI/CD pipelines. Comfortable owning the entire product lifecycle—from architecture and API design to production deployment—across diverse client engagements.

Most of my career has been independent work: job portals, restaurant systems, desktop CRMs, cloud pipelines, extensions, and personal tools for clients and teams. I spent 2024–2025 as a Software Engineer at DCT Technology, then returned to freelance—each chapter reinforced the same lesson: understand the problem, design for maintainability, and own delivery end to end.

I work comfortably across frontend, backend, databases, and deployment. Whether freelancing or collaborating in-house, I align on scope and tradeoffs early and prefer shipping iteratively over waiting for perfect plans.

Philosophy

Understand the problem before writing code.
Ship iteratively—small releases beat perfect plans.
Own outcomes, not just tickets.
Balance engineering rigor with product clarity.

Work style

  • Align early with clients and stakeholders on scope, milestones, and tradeoffs.
  • Prototype quickly, then harden for production.
  • Document decisions that affect architecture and delivery.
  • Prefer maintainable systems over clever shortcuts.

Skills overview

Frontend

  • React.js
  • Next.js
  • Angular
  • React Native (Expo)
  • TypeScript
  • JavaScript
  • Tailwind CSS
  • SCSS/SASS
  • Framer Motion

Backend

  • Node.js
  • NestJS
  • Express.js
  • Flask
  • REST APIs
  • WebSockets
  • JWT
  • RBAC
  • OTP
  • SSO

Databases

  • MongoDB
  • PostgreSQL
  • MySQL
  • SQLite
  • Oracle
  • Supabase
  • Firebase

Cloud & DevOps

  • Docker
  • GitHub Actions
  • CI/CD
  • AWS
  • DigitalOcean
  • Vercel
  • Firebase Hosting
  • Linux
  • DNS & email configuration

Architecture

  • Modular architecture
  • Low-level design (LLD)
  • Microservices
  • Real-time systems
  • Scalable API design

Automation

  • Chrome extensions
  • Telegram bots
  • Web scraping
  • Workflow automation