Relja is available for hire
Hire ReljaRelja Damnjanovic
Verified Expert in Engineering
MySQL Developer
Belgrade, Serbia
Toptal member since October 17, 2012
Bio
A computer science engineering graduate and a full-stack developer with both corporate and freelance experience, Relja also runs his own web development company. He is strong both in working in teams and individually, and excels at algorithm design/analysis, as well as database design/architecture. Relja is an expert in Magento, certified in both front-end and back-end development, as well as in other eCommerce systems, including WooCommerce and Shopify.
Portfolio
Codernia
CSS3, Ruby on Rails (RoR), WordPress, Magento, JavaScript, MySQL, PHP, Shopify...
StuntCoders
CSS3, WordPress, Zend Framework, Magento, JavaScript, CSS, HTML, MySQL, PHP...
In2 Belgrade d.o.o.
Java EE (Jakarta EE), Java, Oracle, Oracle PL/SQL, Development
Experience
- MySQL - 15 years
- Magento - 13 years
- PHP - 13 years
- WordPress - 13 years
- JavaScript - 11 years
- Full-stack - 10 years
- APIs - 7 years
- Shopify - 5 years
Work Experience
Founder, Lead Developer
2014 - PRESENT
Codernia
- Developed, customized, designed, and implemented Magento systems for more than 50 different shops, working on both the back end and front end.
- Worked on various WooCommerce and Shopify systems, as well as on a migration between various eCommerce systems.
- Integrated multiple third-party APIs with Magento, ERP systems, and CMS platforms. Developed a custom online payment method for Magento.
- Developed and maintained a WordPress plugin that was distributed through the WP plugin repository.
- Created a powerful Magento extension for data mining and business intelligence analytics.
- Built and implemented a Ruby on Rails application for the HR company.
- Developed and implemented a Laravel application for an event scheduling company.
Technologies: CSS3, Ruby on Rails (RoR), WordPress, Magento, JavaScript, MySQL, PHP, Shopify, Shopify API, Full-stack, HTML5, React, Web Development, Git, Magento 2, Development, Agile Software Development, Adobe Photoshop, Payment APIs, Responsive Web Design (RWD), Liquid, Full-stack Development, REST APIs
Founder, Lead Developer
2011 - 2014
StuntCoders
- Worked and developed various web applications and sites, with responsive adaptation. Mastered Magento and WordPress.
- Worked on everything Magento-related from setup, theme installation, and data migration to development of new extensions, functionality upgrade, maintenance, database programming, integration with WordPress, and adaptation for mobile platforms.
- Developed a custom-built CMS web application in Zend framework with full back-end administration and integration with various services.
- Built a geolocation framework using Google Maps for a web service through which customers can search for nearest facilities of their interest.
- Developed and implemented an internal management software using Ruby on Rails.
Technologies: CSS3, WordPress, Zend Framework, Magento, JavaScript, CSS, HTML, MySQL, PHP, Web Development, Git, Development, Responsive Web Design (RWD), Full-stack Development
Software Engineer
2008 - 2011
In2 Belgrade d.o.o.
- Worked on very complex software for banks, insurance companies, and financial institutions, mainly in Oracle technologies (Forms, Reports, Designer).
- Developed Java application for localization of Oracle modules in different languages (JavaEE).
- Developed a Java application for digital signatures of financial reports (Java SE).
- Designed and developed software for insurance agencies and field agents. (Oracle XE + Oracle APEX).
- Worked on a DB optimization and programming, modelling and architecture.
Technologies: Java EE (Jakarta EE), Java, Oracle, Oracle PL/SQL, Development
Project History
NDA Marketing Company
A ground-up project, setting up an Ubuntu web server and necessary services, followed by Magento 2 development, heavy customization, third-party API integration, customer segmentation, database programming and optimization, code refactoring, and front-end implementation in JavaScript and CSS3.
Technologies: Magento 2 PHP, JavaScript, CSS3, HTML5, MySQL, Ubuntu, AWS.
Technologies: Magento 2 PHP, JavaScript, CSS3, HTML5, MySQL, Ubuntu, AWS.
NDA Car Company
I worked on upgrading and maintaining a Magento system, enhancing functionality, integrating third-party services, optimizing databases, and programming in a highly complex setup that was integrated with several external systems. I also worked on the conversion from Magento Enterprise to the Magento Community version.
Dwell
http://store.dwell.com/Magento Enterprise edition maintenance work on a large shop with a rigorous development process and heavy, standardized implementation, integrated with Drupal.
Technologies: Magento, PHP, MySQL, Drupal, HTML, CSS, JavaScript.
Technologies: Magento, PHP, MySQL, Drupal, HTML, CSS, JavaScript.
Inventosaur
Magento extension for data mining and sales analytics, which, through complex algorithms, detects slow moving products and offers promotions for them.
Fully developed extension for both Magento v1 and Magento v2.
Fully developed extension for both Magento v1 and Magento v2.
Shop247
I worked on a complex multi-site Magento setup, focusing on code optimization and upgrades, front-end implementation with extensive JavaScript-based UX improvements, back-end development with custom modules and features, implementation of custom product types, third-party system integrations, and database enhancements. I also worked on a migration from Magento 1 to Magento 2.
https://www.fore24.co.uk/
https://www.woodworm.tv/
Technologies: Magento, PHP, MySQL, HTML, CSS, JavaScript, jQuery.
https://www.fore24.co.uk/
https://www.woodworm.tv/
Technologies: Magento, PHP, MySQL, HTML, CSS, JavaScript, jQuery.
Unique SportsTime
https://unique-sportstime.de/A Magento system upgrade and maintenance project involving functionality enhancements, integration with third-party services, responsive design implementation, database optimization, and programming. It also included an upgrade of the “shirt designer” extension, migration from Magento 1 to Magento 2, and integration with WordPress and various APIs.
Technologies: Magento 2 PHP, JavaScript, CSS3, HTML5, MySQL.
Technologies: Magento 2 PHP, JavaScript, CSS3, HTML5, MySQL.
Jewlzie
A Magento front-end and back-end maintenance project involving design and functionality updates, customizations, and extension maintenance. Included multiplatform integration with third-party APIs, core system programming, and the setup of a large-scale system that worked as a drop-shipping hub for multiple eCommerce platforms.
Technologies: Magento, PHP, MySQL, HTML, CSS, JavaScript, DevOps.
Technologies: Magento, PHP, MySQL, HTML, CSS, JavaScript, DevOps.
Golf Division
https://www.golfdivision.com/A complex multi-site Magento setup involving code optimization and upgrades, theme implementation and JavaScript development, creation of custom modules and features, implementation of custom product types, third-party system integrations, a custom add-to-cart flow, and database improvements and optimization.
http://www.teardrop.golf/
http://www.macgregorgolf.com/
Technologies: Magento 2, PHP7, MySQL, HTML, CSS, JavaScript, jQuery, Knockout.js, Bootstrap.
http://www.teardrop.golf/
http://www.macgregorgolf.com/
Technologies: Magento 2, PHP7, MySQL, HTML, CSS, JavaScript, jQuery, Knockout.js, Bootstrap.
Hampden Clothing
A Magento-to-Shopify migration involving a complete Shopify setup, responsive theme creation, customizations, custom app maintenance, Lightspeed integration, and several additional integrations with external services.
Technologies: Shopify, Liquid, PHP, MySQL, JavaScript.
Technologies: Shopify, Liquid, PHP, MySQL, JavaScript.
Alwaysriding
Development and customization of a Magento shop involving database programming, third-party extension upgrades and enhancements, API integrations, front-end UX improvements, and sales process automation.
Technologies: Magento, PHP, MySQL, WordPress, HTML, CSS, JavaScript.
Technologies: Magento, PHP, MySQL, WordPress, HTML, CSS, JavaScript.
SmartyPants Magento Shop
Development and customization of a Magento shop, database programming, and third-party extensions upgrade and expansion, also with external API integration.
Technologies: Magento, PHP, MySQL, WordPress, HTML, CSS, JavaScript.
Technologies: Magento, PHP, MySQL, WordPress, HTML, CSS, JavaScript.
LivingAutism UK Website
Development, adjustment, and upgrading of an inherited custom-built CMS, including database design and programming, Google Maps integration, and search algorithm implementation.
Technologies: PHP, MySQL, JavaScript, HTML, CSS, Google Maps.
Technologies: PHP, MySQL, JavaScript, HTML, CSS, Google Maps.
People Footwear TW
https://peoplefootwear.tw/Implemented a responsive, pixel-perfect designed Shopify store from the ground up, with some custom functionalities and custom Shopify apps for data management.
Technologies: Shopify, CSS3, HTML5, JavaScript, Figma
Technologies: Shopify, CSS3, HTML5, JavaScript, Figma
Regroup
https://regroupwithus.com/Implemented a pixel-perfect WooCommerce system based on the Figma designs, heavily customized with Advanced Custom Fields to facilitate more than 10 different page designs and several different product types.
Technologies: WordPress, WooCommerce, PHP, JavaScript.
Technologies: WordPress, WooCommerce, PHP, JavaScript.
Above Category
Shopify development involving implementation of a custom product type and add-to-cart flow, CMS pages, JavaScript-based UX improvements, optimization, custom app integration, and data updates.
Technologies: Shopify, HTML5, CSS3, JavaScript, PHP, API.
Technologies: Shopify, HTML5, CSS3, JavaScript, PHP, API.
Ucon Acrobatics GmbH Magento Shop
Complete setup and installation of a Magento store, database migration from ZenCart, additional development, extension creation, maintenance, WordPress integration, design, multi-store integration, and third-party software integration.
Some of the stuff I developed: Ajax add to cart, barcode module, email notifier, credit discount module, reporting tools.
Technologies: Magento, PHP, MySQL, WordPress, HTML, CSS, JavaScript.
Some of the stuff I developed: Ajax add to cart, barcode module, email notifier, credit discount module, reporting tools.
Technologies: Magento, PHP, MySQL, WordPress, HTML, CSS, JavaScript.
Flippa Online Business Valuation
https://wordpress.org/plugins/flippa-estimate-your-business/A WordPress plugin that integrates WordPress sites with the Flippa business evaluation platform. The plugin shop-owners on the WooCommerce can evaluate the base worth of their business and start the selling process in case they are interested.
Xola Bookings for Tours Activities
https://wordpress.org/plugins/xola-bookings-for-tours-activities/WordPress plugin which integrates WordPress sites with the Xola booking platform, enabling all their clients to offer users booking through their own website.
Technologies: WordPress, PHP, MySQL, HTML5, CSS3, JavaScript.
Technologies: WordPress, PHP, MySQL, HTML5, CSS3, JavaScript.
Education
2004 - 2008
Graduated Engineer of Computer Science Degree in Computer Science
Computing School Belgrade - Belgrade, Serbia
Certifications
NOVEMBER 2013 - PRESENT
M1 Developer
Magento
OCTOBER 2013 - PRESENT
M1 Front-end Developer
Magento
Skills
Libraries/APIs
jQuery, WooCommerce API, Liquid, REST APIs, Facebook API, Google Maps, Shopify API, React
Tools
Terminal, Adobe Photoshop, MAMP, Git, PhpStorm, Eclipse IDE, TextMate, Figma to HTML
Languages
CSS3, HTML5, JavaScript, PHP, Delphi, C++, Ruby, Java, Pascal, HTML, CSS, C
Frameworks
Zend Framework, Laravel, Ruby on Rails (RoR)
Paradigms
Responsive Web Design (RWD), Agile Software Development, Extreme Programming, Concurrent Programming, DevOps, Business Intelligence (BI)
Platforms
Magento, WordPress, Shopify, WooCommerce, Magento 2, MacOS, NetBeans, Linux, Windows, Oracle, Java EE (Jakarta EE), Eclipse, Magento API, Ubuntu
Storage
Oracle PL/SQL, MySQL, PostgreSQL, Database Modeling, Databases
Other
Front-end Development, Mega, Machine Learning, Full-stack, Web Development, Development, Payment APIs, Full-stack Development, WordPress Plugins, WordPress Themes, APIs, Computer Science, IT Project Management, Optimization
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