NO THANKS, JUST ACTION.

Welcome to the Demian Kostelny website!

BLOCKCHAIN, WEB-DEVELOPMENT?

Sure, here you can find my own services of web and blockchain development. I'm can create for you your own smart contracts with Solidity, but also I can write for you your own NFT game :)

COOLEST SERVICES EVER

Here you can find technologies of your dream!

Vue.js

As every cool web-developer, I use Vue.js for building nice front-end of web apps.

Solidity

Can write smart contracts and work with Web3.

Rust

So when I want to build a new Solana program - I use Rust, Anchor, and TypeScript to do that.

PHP

I have good skills with PHP development - want to build some apps? Use PHP ✌️

Wordpress

I provide nice services for the development of e-commerce websites and everything that I can build with WordPress CMS.

Laravel

When I want to build some cool apps with PHP, I prefer to use the Laravel framework for building all app logic and API.

MORE ABOUT ME

My story begins in 2017 when I had programming only as a hobby, but soon this become more interesting for me that just coding some small scripts or calculators. And then I began my path as WordPress/PHP developer, and in the spring of 2018, I got my first job as a Junior WordPress developer. In that days I was a real noob 😉

Soon with more practice and time, I started becoming more and more professional in this part of my development. Today I have 3 years of experience in web development and I can say that with all projects that I created and experienced I become a Middle PHP Developer. But also I started my path in blockchain development, in this kind of development I’m not super – but I’m like a junior blockchain dev ✌️

Sometimes I like to write some articles about web development or make courses for Udemy, and I do this in my free time. It’s cool to feel that the material that you created helps someone to become a much better developer 🔥 And yeah, if you want – you can find my book “PHP Junior Kit” on Google Play Books.

PROJECTS.

But that's not all

MY EXPERIENCE

2018 May - 2018 Oct | Morkva | Junior PHP Developer

Templates and plugins development for WordPress websites.

2018 Oct - 2019 Jan | Anvi | Wordpress Developer

Fixing bugs and updating websites/plugins that were created with WordPress.

2019 Jan - 2019 Jun | Freelance | PHP/Wordpress Developer

Apps development with Symfony and Laravel.

2019 Jun - 2020 Feb | Sovalogic | Laravel PHP Developer

Apps development with Wordpress, Laravel, Symfony, React.

2020 Feb - Now | Self Employed | Wordpress/Blockchain Developer

E-commerce development and smart contracts writing with Solidity.

SOME OTHER STUFF.

For now I started making my own courses for Udemy and also soon I'm gonna upload all this on my own YouTube channel. But here is some stuff that you can find.

GraphQL - Beginner's Course 2022

May 2022 - I published my new course on Udemy and this is a small course about the main concepts of GraphQL with Node.js

Vue.js - Complete Course For Beginners

In spring of 2020 I created my own Vue.js free course for Udemy. And now I've got 10k students and 4/5 rating 🎉

PHP: Junior Kit

So, in 2018 I wanted to write my first programming book - and here it is. This is PHP Junior Book, that's is good for beginners that want to become PHP Junior Developers.

Leave a reply here

If you want to contact with me - just use a form below.