Chowon Hasan
Solutions Architect & Full-Stack Developer
I build scalable enterprise platforms, AI-powered solutions, and high-performance SaaS that drive business growth. Turning complex problems into elegant, reliable code.
Beyond the Code
HI, I'm Chowon Hasan. I don't just write software; I architect digital ecosystems that solve complex business problems.
In a world optimized for speed, I prioritize scalability, security, and impact. My expertise lies in building high-stakes platforms—from government-certified education portals (VAE) to AI-driven automotive commerce engines (Laboiteauto).
I partner with forward-thinking businesses to bridge the gap between "ambitious ideas" and "deployed reality." Whether leveraging OpenAI for intelligent automation or architecting secure payment infrastructures with Stripe, my focus is always on the ROI of your technology.
Core Expertise
- Enterprise Next.js Architectures
- AI & Chatbot Integration
- Complex SaaS Dashboards
- Secure Document Handling
"Chowon transformed our manual workflow into a fully automated AI system."
— Verified Client
Case Studies
Deep dives into complex systems where I architected the full stack, from database design to frontend UX and AI integration.
VAE.fr - Certified Education Portal
A government-compliant educational platform handling sensitive user data and certification workflows. I re-architected the legacy system into a secure Next.js application, integrating Vercel Blob for encrypted document storage and a custom administrative dashboard for certification tracking.
99.9%
Uptime
Good
Server Optimization
+74%
User Growth
VBA - AI Automotive Commerce
A specialized automotive commerce engine that replaces manual diagnostics with AI. I built an OpenAI-powered chatbot that analyzes user-reported error codes to recommend specific gearbox parts, streamlining the sales funnel and reducing support ticket volume by 60%.
60%
Support Saved
Fine-Tuned
AI Accuracy
5,000+
SKUs Managed
Work Experience
Associate Software Engineer
Click & Trust (France) | Feb 2024 - Present
- Develope and maintaining scalable web applications using Next.js, React, Node.js, and Express for Click & Trust.
- Collaborating with cross-functional teams in a fully remote, multicultural environment.
- Developed custom CMS, e-commerce, and AI-powered applications.
Freelance Web Designer
Various Clients (Europe, Bangladesh, India) | 2021 - 2024
- Delivered 100+ web projects for clients in France, India, and Bangladesh.
- Notable clients: Crescent Education (India) — built 1300+ page WordPress site.
- Built long-term client relationships through excellent communication and project delivery.
Scaling on a Budget: Fitting a Mid-Level Project on Vercel's Free Tier
A mid-level Next.js project was hitting Vercel's limits. Here's how I optimized it to run smoothly on the free tier, saving significant costs without sacrificing features.
The Challenge: Massive 40MB Initial Bundle
Users were complaining about slow loads. Bandwidth usage was spiking through the roof. The culprit? A single component was secretly bundling a massive 39MB database file directly into the browser code. Every visitor was downloading an entire library just to view one page.
⚠️ Warning: Bandwidth Limit Exceeded
> Bundle Size: 41.2 MB (Critical)
The Fix: Zero-Bundle Architecture
I moved the heavy data to the server. Instead of sending the whole library to the user, the app now asks the server forjust the data it needs.
I also added "Debouncing" to the search bar. This stops the server from being flooded with requests while a user is still typing.
import heavyData from 'database.json'; // ❌ 40MB Sent to Userconst data = await fetch('/api/item/${id}'); // ✅ 2KB OnlyOptimization Results
Bundle Size
Compute Cost
User Experience
"By optimizing the architecture, we stayed comfortably within the free tier limits while serving thousands of users."
Achievements & Milestones
3rd Place – Project Showcase Contest
Ranked among the top 3 out of many participants for building an innovative agency portfolio using Next.js.
Black Belt Graduate
Earned the Black Belt for outstanding performance and project work in the MERN stack web development program.
Certificate - Project Showcase Contest
I just got this certificate of achievement from Programming Hero for securing Rank-3 in the Web Application Project Show Contest 2023 (Season 3).
Web Development Graduate
Built and managed a massive WordPress site for a leading Indian university, handling complex requirements and tight deadlines.
Web Development Graduate
Completed a 6-month intensive bootcamp, learning real-world web development and the value of mentorship.
Recent Projects
Business e-commerce
Automatic transmission repair shop website. AI powered dashboard system.
Online Booking System
Cab FR is user-friendly cab booking platform built for the French market.
Dynamic Portfolio
Agency Portfolio is fully customizable CMS platform designed for agencies
Management System
management platform built to solve a real business problem for car sellers.
E-commerce
Custom-made sheets and curtains - E-commerce project.
School Management
Buy a course, secure Stripe payment method, login/signups.
Social Media Platform
Online platform, features combine Stack Overflow and Facebook.
Web to PDF
My First SaaS project for web to pdf.
Git contribution
Days Since I Started Coding: 0
Client Success Stories
Don't just take my word for it. Hear directly from the business owners and founders I've partnered with.
"Chowon is not just a developer; he's a strategic partner who understands business goals."
Brice
CEO, Click & Trust
"The solution provided exceeded our expectations in terms of scalability and performance."
Happy Client
Business Owner
Get In Touch
Contact Information
Let's Connect
Feel free to reach out for collaborations, projects, or just a chat!