Hi, I'm Hasan Sarkar
Full-Stack Web Developer
Expert in Astro, React & Next.js Ecosystems
I build highly optimized, scalable, and beautifully designed web applications. With a strong focus on clean code and performance, I specialize in crafting modern solutions using Astro, Next.js, and serverless technologies.
About Me
I'm Hasan Sarkar, a passionate Full-stack Developer from Bangladesh with a knack for building scalable digital solutions. Beyond the code, my drive comes from an endless curiosity about how technology evolves and shapes our daily lives. I spend my time architecting web applications and staying at the forefront of the Cloudflare ecosystem. When I’m off-screen, you’ll likely find me immersed in a mind-bending sci-fi movie or exploring new creative ideas to translate into reality.
Tech Stack
Frontend
- Astro
- JavaScript (ES6+)
- TypeScript
- React
- Next.js
- Vue.js
- HTML5
- CSS3
- Tailwind CSS
- Shadcn UI
- Material-UI
Backend
- Node.js
- Express.js
- Hono.js
- Next.js APIs
- Astro APIs
- Cloudflare Workers
- Prisma ORM
- PostgreSQL
- Redis
- JWT / Auth
Databases
- MongoDB
- PostgreSQL
- MySQL
- Supabase
- D1 SQL
- Cloudflare KV
- Durable Objects
- Hyperdrive
- Upstash
- Firebase
Deployment
- Cloudflare
- Vercel
- Netlify
- Render
- Railway
- Heroku
- Firebase Hosting
- GitHub Pages
- Any VPS Provider
- AWS (S3, EC2)
Marketing
- SEO (On/Off-page)
- SMM (FB & IG Ads)
- SEM (Googles Ads & PPC)
- Link Building
- Email Marketing
- Web Analytics (GA4, Pixel)
- Social Media Strategy
Server
- VPS Management
- Cyberpanel
- AApanel
- Cpanel
- Plesk
- DirectAdmin
- HestiaCP
- ISPConfig
WordPress
- Theme Development
- Plugin Development
- WP-REST API
- ACF
- React + WordPress
- Vue.js + WordPress
- Astro + WordPress
- Host WordPress on VPS
Security
- Web Security (OWASP)
- Pentesting
- API Hardening
- Bot Mitigation
- Rate Limiting
- WAF Configuration
- DDoS Protection
- Auth & JWT Security
- Bot Detection
- Secure Deployment
Projects
Netflix Client Manager
A robust, full-stack subscription management system built with Astro, React, and Cloudflare D1. This project was designed to manage shared Netflix (and other services) credentials for clients with automated restriction handling.
Smart AI Bot
A robust, multi-worker Cloudflare project to provide an intelligent Telegram Bot with fallback AI integrations, background OTP handling, and a full-fledged Admin Panel.
VarsityHub
A centralized hub for university students to access essential academic information like exam routines, official notices, result publications, and academic resources.
Email OTP Automation Worker
A Cloudflare Worker designed to receive emails, extract One-Time Passwords (OTPs) and verification links, and store them securely.
PDF to JPG Converter Worker
A modern, fast, and serverless PDF to Image converter built as a Cloudflare Worker for direct in-browser conversions.
Experience
2021 — Present
Full-Stack & Edge Ecosystem Developer • Self-Taught · Personal Projects
- Designed blazing fast applications using Astro, Next.js, and React with complex serverless and edge architectures.
- Developed advanced backend infrastructure leveraging Cloudflare Workers, Hono.js, and durable edge environments like D1 SQL, KV, and Durable Objects.
- Engineered real-time features and managed distributed states utilizing Prisma ORM, PostgreSQL, and Upstash Redis configurations.
- Pioneered secure, decoupled Headless WordPress solutions integrated with Astro and React components through WP-REST APIs.
- Optimized applications using modern CSS (Tailwind, Shadcn) for fully responsive UI components with top-tier Core Web Vitals.
2019 — Present
WordPress Engineer & Digital Marketing Specialist • Self-Taught · Personal Projects
- Customized and developed performant WordPress themes and specialized plugins from scratch leveraging ACF and PHP.
- Executed diverse SEO (On/off-page, link building) and Search Engine Marketing (SEM & PPC) strategies.
- Orchestrated cross-platform Social Media Marketing (SMM) and analyzed traffic metrics via GA4, Meta Pixel, and Search Console.
- Drove business scaling via tailored Email Marketing, lead generation, and cohesive e-commerce solutions.
2020 — Present
Server Administrator & Web Security Specialist • Self-Taught · Personal Practice
- Provisioned, scaled, and managed unmanaged VPS servers employing diverse panels like Cyberpanel, AApanel, cPanel, and Plesk.
- Implemented stringent security practices including OWASP methodology, pentesting, and API hardening (JWT/Auth0).
- Defended high-traffic applications utilizing Cloudflare WAF, advanced bot mitigation, rate limiting, and DDoS protection layers.
- Managed intricate CI/CD pipelines, streamlined code deployment, and ensured robust end-to-end operational stability on platforms like Vercel and Railway.