Stratos Nikolaidis, Ajax Developer in Xemxija, Malta
Stratos Nikolaidis

Ajax Developer in Xemxija, Malta

Member since November 11, 2013
Stratos has been a professional programmer since 2000 and is an established software engineer. His next goal is to become a software architect and consultant. His deep knowledge, experience, and technical, and communication skills will enable him to face any challenge.
Stratos is now available for hire




Xemxija, Malta



Preferred Environment

Linux, Windows, Visual Studio Code, Sublime, Git

The most amazing... I've built is a search engine for a betting site using Node/Vue/Firebase. It is 100% integrated with the site, modifying the betslip directly.


  • WordPress/JavaScript Developer

    2019 - PRESENT
    Omid Aghazadeh dba RentDuo
    • Implemented JavaScript apps using Amazon's Lambda platform.
    • Implement Adobe Sign (e-signature service) in the site.
    • Migrated JavaScript (Lambda) functionality to WordPress.
    Technologies: WordPress, PHP, Lambda, JavaScript, AWS
  • WordPress Developer

    2019 - PRESENT
    Tobias Rosen dba Rosen Advertising
    • Developed law firm websites in WordPress, focusing on SEO performance.
    Technologies: WordPress, PHP, HTML, CSS, JavaScript/jQuery
  • WooCommerce UPS Integration

    2018 - PRESENT
    Sociallyin, LLC (via Toptal)
    • Developed WordPress a plugin/theme.
    • Modified existing plugins.
    • Extending an amazing song writing platform.
    • Adding social media features making it more appealing.
    Technologies: WordPress, PHP, WooCommerce, UPS
  • Head of Development

    2014 - PRESENT
    • Made site adjustments using Google Tag Manager and Google Firebase real-time database.
    • Implemented marketing strategies and techniques on site.
    • Maintained back-end tasks using Node.js.
    • Extended usage of the Bootstrap grid system.
    • Made dynamic updates using jQuery and push technologies (Pub/Nub).
    • Developed and maintained multiple WordPress sites (single and network installations).
    • Built NoSQL databases using MongoDB.
    • Created my own search engine using Node/Firebase/Vue for sports searching.
    Technologies: PHP, WordPress, Zend Framework, MongoDB, Node.js, jQuery, Bootstrap
  • PHP/WordPress Developer

    2019 - 2019
    Gatemore (via Toptal)
    • Modified a WordPress theme.
    Technologies: WordPress, PHP
  • PHP Expert

    2019 - 2019
    Freediving Instructors International (via Toptal)
    • Provided expertise with PHP, Signagle's API, and programming.
    Technologies: PHP, Signable
  • WordPress Developer

    2019 - 2019
    Jonathan Bethune (via Toptal)
    • Developed back-end features in WordPress.
    • Communicated with third-party services.
    • Shortened URLs using's API.
    Technologies: WordPress, PHP,
  • WordPress Developer

    2018 - 2019
    End Party Politics (via Toptal)
    • Designed a WordPress theme.
    • Developed a back-end plugin.
    • Modified existing functionality.
    Technologies: WordPress, PHP
  • Full-stack Web Developer

    2015 - 2017 (via Toptal)
    • Maintained and developed high-traffic WordPress sites.
    • Developed automations with Eventbrite, Intercom, and Mailchimp.
    • Extended theme development.
    • Administrated and managed WPEngine.
    • Extended third-party pixel tracking.
    • Developed a single-page WooCommerce instance.
    Technologies: WordPress, WooCommerce, Eventbrite, Intercom, Mailchimp
  • Croptender Mobile Application Back End

    2015 - 2015
    Justin Trouard (via Toptal)
    • Developed a WordPress plugin and theme.
    Technologies: WordPress, PHP
  • Developer

    2014 - 2015
    Mixergy (via Toptal)
    • Created a WordPress search page that will have infinite scrolling and be fully responsive. Search can be done based on search text or specific tags. Admins have the functionality to modify article tags directly from the search results. Search operates while the user types in the search field.
    • Created a plugin (not connected to the specific theme) using only WordPress API.
    Technologies: WordPress, jQuery/Ajax, HTML/CSS, PHP, MySQL, Data Caching
  • Senior PHP Developer

    2013 - 2014
    DNX Corporation
    • Enhanced use of JavaScript using Ajax calls.
    • Used event-driven jQuery and the Symfony 2 framework.
    • Developed a platform to display different outputs for desktop, mobiles, and tablets.
    • Collaborated with four different development teams across Europe.
    • Optimized the website for traffic approaching 25 million visits per month.
    • Created testing scenarios with Selenium library and Java.
    Technologies: PHP, Symfony2, HTML5, CSS3, Less, JavaScript, jQuery, Selenium/Java
  • IT Specialist

    2010 - 2013
    4th Regional Health Authority of Macedonia and Thrace, Greece
    • Worked for PROHEALTH - Interreg Greece - Bulgaria
    • Developed a portal for the 4th Regional Health Authority of Macedonia and Thrace.
    • Handled electronic transmission of incoming mail.
    • Managed and supported the IT departments in all hospitals in Macedonia and Thrace.
    Technologies: C#, PHP, Delphi, MySQL, DBISAM
  • IT/Scientific Consultant

    2007 - 2013
    Bits and Bytes Software
    • Enabled live communication between e-shops and ERP systems.
    • Merged e-shops and TecDoc databases.
    • Created complete custom ERP systems.
    • Developed mobile applications using the Kalipso engine.
    • Developed complex custom solutions for ERP systems.
    Technologies: PHP, HTML, MySQL, DBISAM, MS SQL Server, JavaScript, jQuery, C#, Delphi
  • IT Analyst

    2005 - 2010
    General Hospital of Thessaloniki, Greece «AGIOS PAVLOS»
    • Supported the data and computer installation in the hospital.
    • Handled applications development for the needs of the hospital’s departments.
    Technologies: Delphi, MySQL, Windows
  • Software Developer

    2001 - 2005
    Protasys S.A.
    • Worked on DLL development for Altec Atlantis ERP.
    • Used JSP, JavaBeans, and EJB under the JBoss Application Server.
    • Built custom applications using Delphi and Oracle.
    Technologies: Delphi, Oracle
  • Software Engineer

    2000 - 2002
    Martel S.A.
    • Developed a fleet management application.
    • Created the pilot program for real-time fleet management for the public transportation of Thessaloniki, Greece (oasth).
    Technologies: Delphi, Oracle
  • Software Developer

    1998 - 2001
    Unisoft S.A.
    • Integrated the Euro currency into the main ERP (Capital).
    • Handled analytical accounts in industrial pricing.
    Technologies: Pascal 5, Delphi


  • Spare Parts Website (Development)

    An e-shop based on PrestaShop+TecDoc* with the following features:

    1. The e-shop communicates with the client's ERP system, synchronizing its product database.
    2. Custom TecDoc search engine
    3. The results of the TecDoc search are merged with the client's products.
    4. In TecDoc results, products that already exist in the ERP can be purchased and the rest can be ordered.
    5. When an online order is downloaded to the client's ERP, there is an intermediate state where:
    • If an order contains only actual products, it is imported in the ERP.
    • In case of the order containing products for order (products not existing in stock), then the client can cancel the order, remove or replace the nonexistant products, automatically create products in the ERP with data retrieved by the database, and complete the process by importing the invoice to the ERP.

    * TecDoc: A joint electronic catalogue for the Automotive Aftermarket that unites different competitors under one roof.

  • ProOffice E-shop (Development)

    An e-shop based on the PrestaShop engine, synchronized with the client's ERP system. Requirements include B2B, a custom modal form for online help and info, a custom modal form for negotiation per site and per product, and WCAG 2.0 compatibility.

  • Coffee Ouzounoglou Mobile App (Development)

    A tool for invoicing on a vehicle. It was developed with Kalipso Mobile Development and runs in Windows Mobile. Users can invoice and collect (cache and cheques). Every transaction is printed in a portable printer. The bridge application imports all transactions in the client's ERP.

  • NoveBagno (Development)

    Unique facility solutions for the bathroom. I completely custom designed the website on PHP/MySQL.

  • Marsanis Mobile App (Development)

    A tool for for exporting and importing decoration products in-house using mobile terminals, developed with Kalipso Mobile Development, the bridge application with C# (imports orders in the client's ERP). All data (products and customers) is imported on the mobile terminal so the whole procedure can be sped up. When users want, they can synchronize with the server and refresh all data. When a user fills in an order, he first selects the customer. When selecting a product (through a built-in barcode scanner), the terminal communicates with ERP through web services to receive the price (price lists are stored in the ERP). When the order is completed, it is synchronized in real time with the ERP and the system prints the order automatically. The customer uses 4-5 mobile terminals with no problem at all.

  • Municipality Emmanouil Pappa Mobile App (Development)

    In collaboration with Telesto Technologies Ltd, I implemented a water counter mobile application for the municipality. The solution has two applications, a desktop application and a mobile (Windows Mobile) one. The desktop application communicates with a software called Genesis for retrieving all information of registers in the municipality (name information, address information, counter information and building type). When users measure for the first time, they can retrieve the GPS position of the meter to increase and ease the searching procedure. Using GPS or the built-in barcode scanner (each counter has its own barcode), users can complete a transaction with ease. We developed the mobile application in Kalipso Mobile Development and the desktop in C# using MySQL as the database.

  • Thilasmos (Development)

    A heavily customized WordPress blog on breastfeeding, designed for visual effect.

  • HealthMed (Development)

    A custom PHP website for beauty and cosmetics.

  • Master Organic Chemistry (Development)

    Created a WordPress search page that will have infinite scrolling and be fully responsive. Search can be done based on search text or specific tags. Admins have the functionality to modify article tags directly from the search results. Search operates while the user types in the search field.

  • The Mindfulness Summit (Development)

    Maintaining and developing WordPress sites with number of improvements in both back and front end. High traffic sites with tight integration with multiple third-party services.


  • Languages

    SCSS, Less, SQL, CSS3, HTML, JavaScript, PHP, UML, C#, Delphi, Java
  • Frameworks

    Bootstrap 3, Zend Framework, Symfony 2, Laravel, Selenium, Smarty, PhoneGap
  • Libraries/APIs

    REST API, WordPress API, WordPress REST API, jQuery, jQuery UI, Nginx-rtmp, Node.js, Facebook API, Vue.js
  • Tools

    Microsoft Excel, Bitbucket, GitHub, Sublime Text 2, Git, GitLab, Chrome Developer Tools, Subversion (SVN), Paint.NET, Asana, Trello, Slack, Nginx, WP eCommerce, Zen Coding, MySQL Workbench, Apache, Gimp, PrestaShop, Git Flow, Redmine, Microsoft Access, Crystal Reports, Vagrant
  • Paradigms

    Responsive Coding, Responsive, Class-based OOP, Model View Controller (MVC), Object-oriented Programming (OOP), REST, Agile Software Development, UX Design, Scrum, Event-driven Programming
  • Platforms

    Linux CentOS 7, NetBeans, WordPress, Windows, Ubuntu, Linux, Oracle, Joomla, Oracle Database
  • Storage

    MongoDB, MySQL, Redis, Redis Cache, Firebase Realtime Database, Oracle SQL, Firebird, Microsoft SQL Server
  • Other

    API Integration, WordPress Themes, WordPress UX, WordPress Design, HTML to WordPress, Ajax, Google Tag Manager, Kalipso Mobile Development, Single-page Applications (SPA)


  • Bachelor's degree in Computer Software Engineering
    1992 - 1998
    Alexander Technological Educational Institute of Thessaloniki, Greece - Thessaloniki, Greece

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