Janusz Paśkiewicz, Software Developer in Rzeszow, Poland
Janusz Paśkiewicz

Software Developer in Rzeszow, Poland

Member since February 13, 2019
Janusz is a senior and lead web developer with a Magento 2 expert certification and more than a decade of professional experience. He is a quick learner with a flexible and enthusiastic personality and can work on his initiative or in a team. Janusz is always hungry to learn more and loves challenges. Currently, he is focused on the Magento platform.
Janusz is now available for hire


  • Sintra Consulting Poland
    Magento, Magento Enterprise, Magento Extension Development...
  • G2A.com
    RabbitMQ, Solr, Node.js, MongoDB, MySQL, Magento, PHP 7, Laravel, APIs...
  • PGS Software
    OXID, Symfony, Zend Framework, jQuery, JavaScript, CSS, HTML, MySQL, PHP...



Rzeszow, Poland



Preferred Environment


The most amazing...

...thing I've developed is a lottery portal that is the second most popular site in the industry in Poland.


  • eCommerce CTO

    2019 - PRESENT
    Sintra Consulting Poland
    • Led the eCommerce development team that was working on Magento projects.
    • Supported project development and troubleshot issues.
    • Fostered the expansion of the team's technical skillset and the adaptation of new technologies and solutions.
    Technologies: Magento, Magento Enterprise, Magento Extension Development, Object-oriented Programming (OOP), Back-end
  • Senior Magento Developer | Team Leader

    2014 - 2019
    • Led the Magento software development team with scrum methodology.
    • Created many different features, mainly involving the Magento back-end.
    • Contributed to many integrations with microservices around Magento.
    • Supported G2A whenever necessary, as it is a jam-packed website, so there were many performance challenges to overcome.
    Technologies: RabbitMQ, Solr, Node.js, MongoDB, MySQL, Magento, PHP 7, Laravel, APIs, JavaScript, New Relic, NGINX, Git, REST APIs, Object-oriented Programming (OOP), Back-end Development, Back-end
  • Senior PHP Developer

    2010 - 2014
    PGS Software
    • Worked for a software house as a PHP web developer, working closely with various clients.
    • Migrated a client's shopping cart based on an old OXID engine to an entirely new OXID engine, which involved porting many custom modules.
    • Provided long-term support of a CRM system. This system was created with a custom PHP framework, so creating many new features and fixing existing bugs was necessary.
    • Worked using PHP Frameworks like Zend and Symfony.
    • Upgraded WordPress CMS website to its newest version, preparing layout including all CSS custom changes to match the received design.
    Technologies: OXID, Symfony, Zend Framework, jQuery, JavaScript, CSS, HTML, MySQL, PHP, WordPress, PHP 5, HTML5, REST APIs, Back-end Development, Back-end, CakePHP
  • Technical Architect | Lead Developer

    2008 - 2010
    • Led and managed various projects, mostly custom eCommerce engines.
    • Created solutions from scratch and modify existing websites and eCommerce solutions.
    • Architected with Magento 0.8 Beta.
    • Ensured that the projects met high SEO standards as this was a mainly SEO company.
    Technologies: osCommerce, X-Cart, Magento, jQuery, JavaScript, MySQL, PHP, SEO Tools, Search Engine Optimization (SEO), CubeCart, Object-oriented Programming (OOP), Back-end Development, Back-end
  • Java and Delphi Programmer

    2006 - 2007
    • Contributed to the build of a data warehouse for a big insurance company.
    • Programmed in Delphi and Java. Developing custom software to manage the data warehouse.
    • Created Oracle packages and procedures in PL and SQL.
    • Identified and resolved bugs or errors reported by the client in the current release of the program.
    Technologies: PL/SQL, Oracle, Delphi, Java, Object-oriented Programming (OOP)


  • G2A.com Website

    I created many features on G2A.com as a Magento 1 full-stack developer during my 5-year full-time position there. For example, I worked as the lead developer who implemented the option of selling electronics in the marketplace.

  • Maintenance of Magento Websites

    I developed several improvements and bug fixes for a family of websites that I was maintaining in 2011-2012:

    • https://viviscal.com

    • https://viviscal.co.uk

    • https://viviscal.es

    • https://viviscal.pt

  • Portal for Lottery Games Fans

    In 2004, I created a portal for enthusiastic fans of Polish lottery games. Over time, the portal became this category's most popular independent website. It has about 100,000+ visits daily, and 10+ million page views monthly.

    I am still the portal's owner, developer, and admin.

  • Migration from Magento 1.9 into Magento 2.4

    I handled the full migration of a very successful eCommerce shop from Magento 1 to the newest Magento 2.4. I did the whole migration alone as a freelancer, starting with preparing the new hosting server, continuing with data migration, and handling all the required third-party modules' customization.


  • Languages

    PHP, PHP 5, HTML5, PHP 7, JavaScript, CSS, Java, HTML, Delphi
  • Libraries/APIs

    jQuery, REST APIs, Node.js
  • Tools

    Magento Modules, NGINX, Jira, Git, RabbitMQ, Solr, PhpStorm, CubeCart
  • Paradigms

    Object-oriented Programming (OOP), Search Engine Optimization (SEO)
  • Platforms

    New Relic, Magento 1, Magento, Magento 2, Magento Extension Development, Magento API, Magento Enterprise, X-Cart, osCommerce, Oracle, Linux, WordPress
  • Storage

    MySQL, MongoDB, Redis, PL/SQL
  • Other

    Web Development, eCommerce, Back-end, APIs, Websites, Data Structures, Web Scraping, OXID, Computer Engineering, Leadership Development, SEO Tools
  • Frameworks

    Laravel, Symfony, CakePHP, Zend Framework


  • Master's Degree in Computer Engineering
    2001 - 2006
    Politechnika Rzeszowska - Rzeszów, Poland


  • Adobe Certified Expert — Magento Commerce Developer
  • Magento 2 Professional Developer
    Magento, Inc.

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