Janusz Paśkiewicz, Developer in Rzeszow, Poland

Janusz Paśkiewicz

Software Developer

Rzeszow, Poland
Toptal 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 available for hire
Hire Janusz


Sintra Consulting Poland
Magento, Magento Enterprise, Magento Extension Development...
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.

Work Experience

2019 - PRESENT

eCommerce CTO

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
2014 - 2019

Senior Magento Developer | Team Leader

  • 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
2010 - 2014

Senior PHP Developer

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
2008 - 2010

Technical Architect | Lead Developer

  • 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
2006 - 2007

Java and Delphi Programmer

  • 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.



PHP, PHP 5, HTML5, PHP 7, JavaScript, CSS, Java, HTML, Delphi


jQuery, REST APIs, Node.js


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


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


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


MySQL, MongoDB, Redis, PL/SQL


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


Laravel, Symfony, CakePHP, Zend Framework


2001 - 2006

Master's Degree in Computer Engineering

Politechnika Rzeszowska - Rzeszów, Poland



Adobe Certified Expert — Magento Commerce Developer



Magento 2 Professional Developer

Magento, Inc.