Tech Stack
Tools and technologies I use to design, build, and ship products.
C++PythonC#TypeScriptJavaScriptNext.jsReactTailwind CSSGSAPMotionNode.jsNest.jsPostgreSQLMongoDBGit & GitHubComputer VisionNumpyPandasScikit learn
const build = "portfolio";
while (creating) {
ship(idea, code, design);
}
Hi, I am Raiyan
Building useful digital products with clarity and craft.
|
- Freelance Software Engineer
Dhaka, Bangladesh
try these effects
About meDhaka, Bangladesh
About Me
I enjoy solving business and user problems with simple, reliable software. I care about design quality, maintainability, and shipping meaningful outcomes.
Competitive programming
Codeforces Problem Solving
@raiyan_sultan
Stats refresh about once per hour (not live).
Total solved
39
Hardest rating
800
Top tag
implementation
By difficulty
Tags
Recent solves
- Black Square
- Fox And Snake
- Sum
- Anton and Polyhedrons
- Arrival of the General
- Divisibility Problem
- Pangram
- Hulk
- Ultra-Fast Mathematician
- Is your horseshoe on the other hoof?
- Presents
- Drinks
- Magnets
- Calculating Function
- George and Accommodation
- Queue at the School
- Tram
- In Search of an Easy Problem
- Beautiful Year
- Vanya and Fence
- Translation
- Anton and Danik
- Nearly Lucky Number
- Wrong Subtraction
- Word
- Soldier and Bananas
- Stones on the Table
- Elephant
- Bear and Big Brother
- Word Capitalization
- Boy or Girl
- Petya and Strings
- Beautiful Matrix
- Domino piling
- Next Round
- Bit++
- Team
- Way Too Long Words
- Watermelon
No rated contests yet
Your rated contest history will appear here after you participate in official Codeforces rounds.
Browse contestsShowcase
People Counting System | Python, YOLOv8, RTSP Camera |
- Developed a computer vision-based people counting system using YOLOv8n for real-time person detection.
- Integrated an EZ-IP IPC bullet camera as the video input for monitoring and analysis.
- Implemented people detection and counting logic using Python and NumPy.
- Worked with YOLO model weights and optimized the detection pipeline for practical video-based monitoring.
- Added timestamped counting logs to track detected people over time.
Let us build something meaningful.
If you have an interesting project or role, I would love to hear from you.