Hai Long Do

Hi! My name is Hai Long Do, and my friends call me Leo.

I am a Laravel Web Developer & Co-Founder of Nulisec s.r.o.

Let's be friends!

  • I make Web and iOS applications

  • I love travelling and photography

  • I learn Mandarin in my free time

My Projects


Nulisec is my startup company that I founded in 2017 with my friends. We are building a European B2B marketplace focused on Consumer Packaged Goods.


Skytrade is a name of my B2B Ecommerce platform. Written using Laravel, Vuejs, Tailwind CSS. Shops running on Skytrade include pttglobal.cz or intermarketcompany.cz


An E-learning platform and CMS to manage our Students, Lectors and Classes. Focused on the Vietnamese community in Czechia. Built using Laravel and Tailwind.


My first Vuejs project. I combined my coding skills and interest in Chinese language, and this is the result! It's a simple website that I used to learn Chinese Characters.