$ cat about.md
About Sandeep Kumar
I'm Sandeep Kumar, a full-stack engineer based in India. I'm currently at CarDekho, building high-traffic web platforms on PHP, MySQL and Redis, where pages need to be fast, correctly indexed and cheap to serve.
On my own time I build with NestJS, Next.js, Laravel and the Claude API. Whatever I learn doing it ends up in my writing: what broke, what I measured and what fixed it.
How I work
01
Measure first
Every fix starts with a Lighthouse run and ends with another one, so you see the before and after, not a promise.
02
Write it down
Every hard problem I solve becomes a post: what broke, what I measured and what fixed it, so the next person starts ahead.
03
SEO is engineering
Crawlability, canonicals, structured data and Core Web Vitals are built in from day one, not bolted on.
04
Boring tech, sharp edges
Proven tools the next engineer can pick up, in a codebase that explains itself. Novelty where it earns its keep, nowhere else.
Experience
Present
Full-stack Engineer · CarDekho
- Build and maintain high-traffic web platforms on PHP, MySQL and Redis, where pages need to be fast, correctly indexed and cheap to serve.
- Work across the stack: server-rendered React front ends, Node.js services and the content systems behind them.
- Focus on performance, caching and technical SEO at scale.
Stack
- frontend:
- Next.js 16, React 19, TypeScript, Tailwind CSS 4, Vite, PWA
- backend:
- Node.js, NestJS, Express, PHP 8.4, Yii2, Laravel 13
- scraping_scripting:
- Python, Selenium, BeautifulSoup, Requests, pandas, SQLAlchemy
- data:
- PostgreSQL, MySQL / MariaDB, MongoDB, Redis, Drizzle, Mongoose
- platform_seo:
- Nginx, PM2, Technical SEO, Core Web Vitals, JSON-LD, WordPress
- tooling:
- pnpm monorepos, Puppeteer, Lighthouse, Claude API, Vitest, PHPUnit
Get in touch
Questions about anything I've written, or working on something similar? The fastest way to reach me is email.