Andrew Onyshchuk, Developer in Ukraine
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Andrew Onyshchuk

Verified Expert  in Engineering

Software Developer

Toptal Member Since
November 1, 2013

Andrew is an experienced web developer who is obsessed with learning newer and better technologies to bring the best solutions to all products and ideas. He possesses a vast range of skills and has experience with many different technologies, designs, and methods of execution.


C++, PHP, Java
Node.js, AngularJS, Bootstrap, Yii, Java, C++, PHP
PostgreSQL, JavaScript, PHP




Preferred Environment

Sublime Text, IntelliJ IDEA, Subversion (SVN), Git, Linux, Windows

The most amazing... I've built is an MxReader app on Bada Os for reading PDF and DJVU files and drawing using OpenGL.

Work Experience

Java & PHP Developer

2013 - 2013
  • Built high-scalable applications using PHP/Java (Spring).
  • Improved Java library for distributed file downloading.
  • Created new API standard for all future project .
  • Created a dynamic page with statistics using PHP, JavaScript.
  • Created multithreaded app for generating reports with Java.
Technologies: C++, PHP, Java


2010 - 2013
  • Created website platform for holding Alternate Reality Games (ARG).
  • Created a mobile client for company web-service for J2ME devices with Kuix framework.
  • Created an application called “MxReader” for reading DjVu and PDF files.
  • Built multiple web projects using stack of most recent technologies: Yii, Twitter Bootstrap, AngularJS, Node.js.
Technologies: Node.js, AngularJS, Bootstrap, Yii, Java, C++, PHP

Web Developer

2008 - 2010
  • Created and supported web projects with PHP and PostgreSQL.
  • Wrote web-parser for external sites using different approaches including Regex and DOM manipulating.
  • Created an elegant API for a big project.
Technologies: PostgreSQL, JavaScript, PHP


Platform for playing Alternate Reality Games (ARG).

Cinema Management

Innovative cinema website for choosing spots using realtime drawing with HTML5 Canvas + Knockout.js.

Java ME application "MyCity"

App for mobile Java clients to read catalog of items using an internet connection. Created using Kuix Java ME framework. Also wrote my own wrapper for handling requests.


Project for meeting groups of friends. Uses Facebook and authorization.


Quiz system for cinema site visitors. Parses huge amount of information about many of movies from a different sites. Created using Yii, AnglularJS, and MySQL.


My own blog management system created using PHP (CodeIgniter) and jQuery.

LightSoft intranet office booking system

Web page for booking local offices. Created using PHP (internal framework) and jQuery to allow real-time drawing of booked and free offices.
2010 - 2014

Bachelors Degree in Applied Mathematics

National Rivne University - Rivne, Ukraine


jQuery, jQuery UI, VK API, React, Node.js, OpenGL ES


Subversion (SVN), Apache, NGINX, Git, IntelliJ IDEA, Sublime Text


CodeIgniter, Laravel, Yii, Kohana, AngularJS, Bootstrap, Knockout (Knockout.js), Angular, Qt


Object-oriented Programming (OOP), Model View Controller (MVC), Functional Programming, Concurrent Programming, Test-driven Development (TDD)


PHP, HTML, CSS, HTML5, JavaScript, SQL, Java, C++, Sass


Linux, Windows, Twitter, Shopify, MacOS


SQLite, MySQL, MongoDB, PostgreSQL, NoSQL, Redis, Memcached


Regular Expressions, Multithreading, Bada

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