Kostiantyn Baidush

Nickname/Stage name: Kostix

Contacts: 03164 Robitnucha str · Kyiv, (093) 291-479O · kostiantyn.baidush@gmail.com

This is a personal web page by web-programmer and musician from Kiev, Ukraine

List of Experience in Web Development

I'm a senior PHP (Symfony Framework) developer with about 10 years practice in Kiev.

Senior PHP/Symfony-3 Software Engineer


It was my the most strongest experience with Rabbit MQ and asynchronous batch processing. These were really high load issues and the most strongest bugs that I had ever and first issues in my career some of them I didn't close, unfortunately. Anyway, I have to continue an implementation high load web-applications using queues and other technologies around that.

Apr 2017 - June 2017

Senior PHP/Symfony-3 Software Engineer

Bridgestone - TireConnect

We started without any specifications and our logic realization based on legacy queries that we had taken from the customer. Even so we are finished a new huge REST service based on Symfony 3. Our implementation included:

  • Test writing
  • Code reviewing
  • Code style
  • PSR standards
  • Cache/cache warming
  • Migrations
  • Fixtures
  • Writing tech documentation
  • Scalability
  • Estimations are finished in time
  • Mail correspondence with foreign supporting team
  • All of that are well done with the help of our professional team!

May 2016 - Apr 2017

Senior Full Stack (PHP/Symfony/Javascript/Linux) Software Engineer

Software MacKiev

In current company I've been worked individually and as a result these were implemented several bundles based on Symfony 2 that has to do some specific functionality:

  • Processing http requests
  • Sending mail correspondence
  • Generating PDF specification agreements
  • Web chat development
  • Web sockets stack configuration
Additionaly, my responsibilities included:
  • supporting of eCommerce web site – http://mackiev.com
  • job interviews with candidates

Feb 2014 - Aug 2015

Middle PHP/JavaScript (full stack) Software Engineer

SandSIV Group

We've been developed with our professional and high motivated team, an automation system has created and shared online social surveys for users all over the world. In current project I was working as a backend (Symfony 1.4, Propel) and frontend developer (JQuery)

Mar 2013 - Feb 2014

Middle PHP/JavaScript (full stack) Software Engineer

Platinum Bank

We are supported and developed banking CRM system used in the bank for internal workflows. I had next issues:

  • Reorganization and optimization the database structure of internal CRM
  • Implementation of multithreading forks in PHP
  • Implementation of queues and operation large volumes of data
  • Development of finance operations functionality
  • Development huge SOAP clients and REST API

5.3 / #Memcached / #MySql / #MSSql / #Oracle / #SOAP / #REST / #ExtJs / #SVN
 / #LAMP / #Jira / #Web Sockets / #Queues
Aug 2011 - Mar 2013

Middle PHP/JavaScript (full stack) Software Engineer

Otpusk.com & Turpravda.ru

It was development of Internet portals «Otpusk» otpusk.com and «Turpravda» turpravda.ua. It means the support old and create new functionality.

#PHP 5 / #
Memcached / #MySql / #SOAP /
 #Jquery /
 #JSONP / #SVN /
 #LAMP /
 #Jira / #Sharding
Dec 2010 - Aug 2011

Junior PHP/JavaScript (full stack) Software Engineer

Digital Ventures

It was a big team development of the horizontal Internet portal “tochka.net”
During the time when I've been working in current company portal had 2nd place of rang by Ukrainian traffic (over 1 million users daily)
I developed bookmarks service (frontend and backend parts) that applies in use algorithm allows filtering by Nested Set trees of portal. http://links.tochka.net, http://auto.tochka.net, http://lady.tochka.net
Also I developed the information widgets service called as Informers which able to be integrated into the page of partners sites. http://informers.tochka.net

#PHP / #Memcached / #MySql / #SOAP / #Zendframework / #Doctrine / #Codeigniter / #ExtJs / #JQuery / #Sphinx / #SVN / #LAMP / #Jira / #Nested Sets / #NGINX / #SSI
Mar 2009 - Dec 2010

Junior PHP Developer


System allows to create, out of the box, a lot of sites and e-markets for business partners

/ #Memcached
/ #MySql
/ #ZendFramework / #Pear
/ #SVN 
/ #LAMP / #Smarty
Sep 2008 - Mar 2009

My music bands and activities

When people ask me about my profession I say I have two: my job is a programmer but I am also a musician. I've been getting great experience during my music career in a different genres as a drummer and percussionist. Some of them are described below:


Pop music

Young and very promising band from Kiev


Oct 2017

Mohito Cover Band

Latin and Pop music


Aug 2015 - Sep 2016

Ramol's Band

Latin and Pop

Latin and Pop music with Tony Ramol - Ukrainian singer from Dominican Republic


Aug 2015

Fast Fats

Jazz, Funk
Oct 2013


Indie Rock

It was a great rock band, not just a project. We were created album and recorded first EP and after several concerts we were finished playing together, unfortunately so



Oct 2009 - Oct 2012


Funk Rock

It was our first garage band, not just a project, it was a friendship. We are learning how to play doing first steps in music composing all together during 8 years in our local technical University while we had been studying in.

Sep 2000 - Aug 2008


I was born and studied in a little city Kremenchug that placed in center of Ukraine

Kremenchuk Mykhailo Ostrohradskyi National University

Master's Degree in Computer Science
I defended a graduation project on theme: «System for automatic management software in company»
2003 - 2008

Kremenchug State School #14

1992 - 2003

Kremenchug Music School #1

In music schlool I was learn piano and drums
2003 - 2008


Programming Languages & Tools
  • The development of REST and SOAP valid clients
  • The development of huge REST and SOAP services
  • Unit and functional tests coverage
  • Mobile-First, Responsive Design
  • Cross Browser Testing & Debugging
  • Cross Functional Teams
  • Agile Development & Scrum


Apart from being a web developer, I enjoy most of my time being outdoors. In the winter, I am an avid skiier. During the warmer months, I traveling in warm countries to enjoy surfing.

I'm a drummer and in free time I playing music with different bands and improving my English

Awards & Certifications

  • Speak Up School of English - Upper Intermediate
  • Speak Up School of English - Advanced (in progress)
  • Symfony Study Certification Gide - done
  • Symfony Framework Certification - in progress
  • Drum lessons by drummer Maksim Deomin - done
  • Percussion lessons in Istanbul by Rocky Designer and Bunyamine - done
  • Percussion challenge organized by Vanya Puh in Kiev - winner

List of web sites and projects

  • Web-services and applications for TAXI


    Backend Symfony based components supporting

  • E-commerce system


    TireConnect is a tool which helps customers and service advisers find and price tires. I implemented REST service based on Symfony 3 and a lot of SOAP clients

  • Web Portal


    Designed and implemented search engine and search filter widget

  • Web Portal


    Designed and implemented several big sections by me, individually

  • Bi-Shop - it's a web shop of popular Ukrainian singer Irina Bilyk


    Full Development based on Joomla CMS

  • Web Site of popular Ukrainian singer Irina Bilyk


    Support old and create new functionality