PROGRAMMING

PHP /7.*,8.*
90%
Symfony framework
80%
Sonata bundles
70%
Mysql/MongoDB
70%
JavaScript/Jquery
95%
HTML/CSS/SASS/SCSS/LESS
90%
Node.js/Grunt
70%

WEB SOFTWARE AND API

Prestashop
95%
Wordpress
95%
WooCommerce
85%
Facebook / Instagram API
80%
Twitter API
80%
Youtube API
80%
Google Web Services
80%
Video Streaming: (Wowza, Opentok)
70%
REST API
80%

SOFTWARE

PHPStorm
75%
Adobe Photoshop
90%
GIT
60%
Putty
90%
Linux
70%

FOREIGN LANGUAGES

Angielski
60%

Balcerzak Radosław Programista Prestashop WordPress

I have been programming for over 15 years in this way, I have combined my passion for computers with paid work. I am working with clients from around the world (including Poland, Germany, USA, England, Spain). Inter alia: Endava, Exozet Berlin, Espeo.eu, Fastdeal, Intersynergy, Ogicom, Politechnika Krakowska, Pantare S.L. and many others ...

  • live:kratekk
  • +48609880234
  • office@balcerzak.it
  • https://www.facebook.com/kratekk
  • https://www.linkedin.com/in/rados%C5%82aw-b-17a47a132/ https://www.linkedin.com/in/rados%C5%82aw-b-17a47a132/

I have extensive experience in implementing/modifying and developing projects based on the Symfony, Prestashop, Wordpress, Woocommerce engines.

As a freelancer programmer, I am creating websites, online stores, portals with various levels of proficiency. I am using the programming languages known in the world: PHP, JavaScript, CSS3, HTML5. In my work I often use Symfony framework with its additions like Sonata. I am workinf for clients around the world. I do my job as a programmer in a reliable and timely manner. In cooperation with agencies, I rely on ticket systems and git repositories. If you are looking for a web developer for cooperation - just contact me!

I have been gaining experience as a Web technology developer for 15 years. During this time, I have worked with hundreds of projects of varying degrees of advancement. Starting as a Prestashop and WordPress developer, I developed large newspaper projects and migrated their content between different CMS systems.

In the history of my experience, I have had the pleasure to work with:

A large factory of carbonated drinks
I delivered an application made in JavaScript and fully configurable with JSON for production management (management of the production line from a tablet or smartphone by the operator, as well as acquisition and exchange of production stage data)

VOD video provider
Project for a large customer from Switzerland. VOD portal for selling Movies based on Symfony and REST API extension for communication with the client's internal system.

A system for servicing of railway employees
The German recipient of the software needed a system to support and manage railway employees. The whole system is made in Symfony based on the Sonata Bundle and Custom Bundle.

Real estate sales system
I have done integration with several API systems of data providers about available real estate for sale or rent and integrated them with the recipient portal.

Development of the leasing portal
For over 4 years I have been developing and improving the portal for servicing the sale of leasing for one of the German clients. The portal was connected to the customer's database user system via REST API. Managers were able to handle their clients' leasing contracts from the panel level. Backend + Frontend.

Development of a video streaming platform
For over 2 years I have been developing a backend (API + user management portal) for a client who needed support to operate his application (Android and iOS). I made Integrations with Wowza Streaming Engine, Opentok, Integral API, Google Cloud, Twitter API, Facebook API

Austria's tourism portal
For over 3 years I have been working on the development of Austria's national tourism portal. Development in the field of Backend and Frontend. Support for over 100,000 users daily.

Backend for the social platform
I participated in the development of the API (Symfony) backend for iOS and Android Applications, a new social platform (similar to Facebook) based on microservices to handle hundreds of REST API queries.

Prestashop
I have over 10 years of experience in the development of the Prestashop sales platform (in each version). I have migrated stores from over 100,000 products. I implemented custom solutions for large stores handling over 10,000 orders per month. I integrated the store with external APIs to handle orders, shipments, import products and export orders to warehouse systems.

programer freelancer

SERVAL EXAMPLES OF IMPLEMENTATION