Oleh Kolesnikov

PHP Developer & CRM Specialist

Building scalable web applications with Laravel, Vtiger CRM customizations, and modern PHP solutions for international clients.

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Technical Expertise

Backend Development

PHP 7.4-8.3 Laravel 10+ Symfony 5 CodeIgniter RESTful APIs OOP & SOLID

Database & DevOps

MySQL 5.7+ Query Optimization Docker Git Redis Linux

Frontend Development

Vue.js 2-3 JavaScript ES6+ Livewire 3 Alpine.js HTML5/CSS3 Bootstrap

CMS & Platforms

Vtiger CRM 7 WordPress WooCommerce Custom Modules API Integration Payment Systems

Featured Projects

RentRanger Database System

Comprehensive property management platform with AI-powered text analysis, interactive dashboards, and custom filtering for 500+ rental units.

Laravel MySQL OpenAI API Chart.js Vue.js

View Demo GitHub

Vtiger CRM Modules

15+ custom modules for Vtiger 7 including inventory management, advanced reporting, and payment integrations for various clients.

PHP Vtiger 7 MySQL JavaScript Stripe API

Case Study Details

E-commerce Integration Suite

Custom WooCommerce extensions and payment gateway integrations, handling 1000+ products with automated inventory management.

WordPress WooCommerce PHP PayPal API REST API

Live Site Code

About Me

3+ Years Experience

50+ Projects Completed

15+ CRM Modules

3 Languages

I'm a PHP developer based in Lviv, Ukraine, with a passion for building robust web applications and custom CRM solutions. With 3+ years of experience, I specialize in Laravel development, Vtiger CRM customization, and full-stack web solutions.

My international background includes exchange programs in Poland and Germany, giving me strong cross-cultural communication skills. I work with clients from the US, Europe, and beyond, delivering high-quality solutions at competitive rates.

Languages: Ukrainian (Native), English (C1 - CAE 187), Polish (B2)

I'm always eager to take on challenging projects and help businesses optimize their web presence and CRM systems. Let's build something amazing together!

Let's Work Together

Ready to discuss your next project? I'm available for freelance work and remote positions.

[email protected]

+380 93 459 9817

LinkedIn Profile

GitHub Portfolio