Viktor Kostadinov, Software Developer in Belgrade, Serbia
Viktor Kostadinov

Software Developer in Belgrade, Serbia

Member since July 24, 2015
Viktor is a senior programmer with over 15 years of professional experience. He's worked in many areas, and he specializes in databases and related programming. He works in PHP-JS and Perl-JS as well as Clarion RDBMS for Windows, and many older RDBMS systems. He is always very eager to learn, and makes a hobby of taking in new information.
Viktor is now available for hire




Belgrade, Serbia



Preferred Environment


The most amazing...

...things I've created, more than all the fascinating programs and solutions I've been a part of over the years, are my two beautiful sons.


  • Expert PERL/PHP Programmer

    2014 - PRESENT
    TP24, Ltd. (UK)
    • Developed and maintained a WordPress website, a Magento web shop, and a Perl database app.
    • Maintained the server for the database app (Ubuntu) and the web applications (WP, Magento).
    Technologies: Perl, Magento, WordPress, JavaScript, jQuery, PHP
  • Senior PHP Developer

    2014 - PRESENT
    Ambrose Rehabilitation Consultants (US)
    • Created an application to track patients, partners, referrals, tasks, and other relevant data for the company. The app is 100% AJAX based and uses MongoDB on the back-end. It allows signing of multiple documents that are stored in PDF format, and is designed to be resold as a SaaS.
    Technologies: HTML, Ajax, jQuery, PHP, MongoDB, Symfony 2
  • Expert PHP Developer

    2012 - 2014
    2buy1click, Ltd. (UK)
    • Led the development of custom WordPress plugins.
    • Developed and maintained WP sites and Magento web shops.
    • Provided MySQL expertise for data import/export.
    • Provided API expertise for interconnection with payment gateways and similar systems.
    • Provided expertise for Membership API (Infusionsoft, MailChimp, LightSpeed VT).
    Technologies: Magento, WordPress, MySQL, JavaScript, PHP
  • Win32 Distributed Apps Developer

    2007 - 2013
    Sluzbeni Glasnik JP (Serbia)
    • Developed a custom application for encyclopedic text acquisition and organization. The application works in a Win32 environment with MySQL back-end. It has more than 250 concurrent users.
    • Involved in more than 10 successful projects.
    • Responsible for time and data tracking and management.
    Technologies: Linux Servers, Win32, MySQL, Clarion
  • Win32 Developer and System Engineer

    2000 - 2012
    BOHOR doo (Serbia)
    • Developed various applications in Clarion for Windows RDBMS.
    • Maintained the server.
    • Maintained the network infrastructure project.
    • Developed for the website.
    • Consulted on general IT matters.
    Technologies: JavaScript, CSS, HTML, PHP, Ubuntu Server, Windows, Clarion


  • Ambrose Consult App

    Data tracking application for Ambrose Rehabilitation Consultants.

  • Live Kidney Donation Website

    Membership site trying to connect renal patients with potential live kidney donors. WP base, custom membership code.

  • Maxima Company Website

    A company website. WP based with custom plugins for color chooser and sales location tracking.

  • ReferralCoach

    WP - Infusionsoft - Lightspeed VT implementation. Allows automatic account creation on the membership systems after a successful signup of purchase made through the Infusionsoft gateway.

  • TP24 Website and Web Shop

    WP based website with Magento web shop that I developed and maintain.

  • TP24 Database App

    A database app written in Perl that I maintained and expanded. No link to show since it's for internal use only.


  • Languages

    JavaScript, PHP, HTML5, HTML, Clarion, SQL, CSS3, CSS, Perl
  • Frameworks

    Symfony 2, Symfony 3, Symfony 4, Zend Framework, Symfony
  • Libraries/APIs

    Infusionsoft API, jQuery, Lightspeed VT API, Authorize.Net, React
  • Tools

    PhpStorm, Git, Infusionsoft, Aptana, Eclipse IDE, Docker Compose, Adobe Photoshop, Adobe Illustrator
  • Paradigms

    Object-oriented Programming (OOP), Agile Software Development, Functional Programming
  • Platforms

    MacOS, WordPress, eWay, Windows, Magento, iOS, Docker, Win32
  • Storage

    MySQL, Neo4j, MongoDB, NoSQL
  • Other

    Payment Gateways, WordPress Multi-user, Ajax, Ubuntu Server, Linux Servers

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