🚀 How I Built a Digital Agency, Won a Hackathon, and Learned Python – Before 18

Hey Dev community! 👋

I'm Dimitris Leventis, a developer from Greece, and I wanted to share a bit of my journey building real-world projects, learning to code, and starting my agency — all before finishing high school.

💡 From Curiosity to Creation

I started learning HTML, CSS, and JavaScript out of curiosity. That curiosity turned into passion when I realized I could build tools, not just websites — tools that solve real problems.

That mindset led to the creation of Leven Inc. — a digital agency I founded to work with real clients on branding, SEO, e-commerce, and web/app development.

🛠️ What I’ve Built

Leven Inc. – A growing agency with real clients and measurable impact.

StudyBuddyApp.com – An AI-powered study assistant that turns homework into quizzes and study plans.

Eco-Market – A grocery price comparison tool for Greece to help people save money.

SafeInternet.gr Games – Educational mini-games for cybersecurity awareness.

All projects are built with stacks like React, Node.js, TailwindCSS, and sometimes Python on the backend.

🧠 Learning from the Best: Harvard CS50 & Python

To sharpen my skills, I completed CS50’s Introduction to Programming with Python.

It helped me deepen my understanding of:

Functions and abstraction

OOP and data structures

Error handling and testing

It’s a tough course, but worth every hour.

🏆 National Hackathon Winner

One of my proudest moments was winning 1st place in the 7th School Hackathon “SELMA” in Greece.

Our project focused on [brief project idea if you want to add it] — and it showed me the power of teamwork and thinking fast under pressure.

📚 What’s Next?

I’m working on improving StudyBuddyApp with AI and expanding my agency’s impact.

I’m also preparing for university, where I hope to combine tech, design, and entrepreneurship even further.

🔗 Let’s Connect

Feel free to check out my portfolio at https://dleventis.gr

Or reach out — I love connecting with fellow developers and makers!

💬 Thanks for reading — and if you're just starting your journey, keep going. You never know where one project can take you.