Krzysztof Ożóg, Software Developer in Kraków, Poland
Krzysztof Ożóg

Software Developer in Kraków, Poland

Member since November 4, 2014
Krzysztof is a skilled Symfony developer with excellent knowledge of Symfony 2, Symfony 3, PHP, and OOP coding practices and familiarity with continuous integration workflow and continuous delivery. He can work with simple front-end features using TWIG, Twitter Bootstrap 3, LESS/CSS, HTML5 and JS/jQuery. He has a strong knowledge of Git workflow and enjoys working with startups and mobile development.
Krzysztof is now available for hire


  • Codesushi
    Bootstrap, JavaScript, HTML, Symfony 2, PHP



Kraków, Poland



Preferred Environment

Ansible, Vagrant, Git, Vim Text Editor, Ubuntu

The most amazing... I've developed is a video chat feature for RLN corp. It consisted of video streaming, text chat, and time billing features.


  • cofounder

    2010 - PRESENT
    • Created an API for a sports related mobile app using a Slim framework.
    • Built an event promoting site in Symfony2 with heavy usage of a Cloudinary API for image processing.
    • Developed a real-time video streaming solution with various billing options, using Symfony2, Wowza Media Server, Redis and NodeJS.
    • Programmed the API and a back-office panel that powers a mobile app for estimating the cost of LED screens.
    Technologies: Bootstrap, JavaScript, HTML, Symfony 2, PHP


  • Meeting Schedule Application

    A mobile website that allows scheduling of meetings between sales representatives and medical staff of a medical facility. I was responsible for making the API for the AngularJS application as well as creating the admin panel and payment processing features. The project was done in Symfony 3.

  • GetHelp Medical Facility Locator

    This project is a mobile website for people who seek special medical attention. I created the API for the AngularJS application and back-office panel for managing the system, adding new facilities, browsing transactions, and managing users. The project was done in Symfony 3.


    An API that backs its corresponding mobile app with support of multi-currency settings and on-demand PDF generation.


    Modification of registration flow and integration with a Twilio API for confirmation of mobile phone numbers.

  • Pirelli Pzero Club

    A loyalty platform for Pirelli Polska, it embodies complex rules for earning profit. To ease development, I used Sonata bundles for the admin area.

  • ERunner

    Working with a distributed remote team on Symfony2 projects, code reviews were conducted by a former Sensio labs (creators of Symfony 2 framework) employee.

  • JamSesh

    Social network for aspiring musicians that want to broadcast their jam sessions. Rewrote the service in Symfony 2 and fixed problems with Wowza Media server.


    Portal for booking of curated tours and activities in cities around the world. Optimized the source code and integrated it with TourCMS and Rezdy API.

  • Voltstreet

    A solution for comparing power supply plans.


    Integrated Stripe into the gift card platform.

  • Quiltsbyme

    Solution for quilting enthusiasts in which they could share their quilt designs. Rewrote the service in the Laravel 5 framework.

  • FleetClean

    Complex and dynamic forms for estimating costs of cleaning a company fleet.

  • RLN project

    RLN project for a UK based client: A big social platform, the development of which included creating complex profiles, video chat, and video sharing.

  • Forex Gamification

    Forex gamification platform for a Polish client: Developed a platform that enabled users to challenge each other on how well they perform on the Forex market. The project relied heavily on semi real-time data provided by

  • CRM Goldpartner

    CRM for a multi-level marketing company selling financial and
    insurance products.

  • Fonline

    Polish startup for crowd based user-to-user services like accommodations, selling used things, inviting people to events, or car sharing. It relied on mobile technology and SMS for micropayments.

  • EKlient

    A tool which helps people publish used car advertisements on 26 popular used-car trade portals.

  • Wycengo

    Used car value estimation web application. It enables users to get an online evaluation of their car based on big data analysis.

  • Kupgo

    A used car classified listings portal. It’s a platform combining several ad sources including a distributed network of agents and their desktop software.

  • Mobartis

    A four-year cooperative effort featuring integrations with Polish mobile operators.

  • Online Video with Wowza and Amazon Elastic Transcoder (Publication)
    Performance and data interoperability are critical to the success of any web application. For web apps that need to support video processing -- which is inherently compute- and I/O-intensive -- these challenges are particularly acute. In this post, I describe some of my experience successfully incorporating video capabilities into a PHP-based web app, leveraging open source technologies and cloud-based services to the greatest extent possible.


  • Languages

    PHP, JavaScript, HTML5, Bash, HTML, Python, C, YAML, WSDL
  • Frameworks

    Symfony 2, Symfony 3, Bootstrap, OAuth 2
  • Tools

    GitLab, Terminal, HipChat, Redmine, Trello, Wowza, Vim Text Editor, Git, Jira, Ansible, Vagrant, Asana, Mercurial, Pivotal Tracker
  • Paradigms

    Object-oriented Programming (OOP), Agile Software Development, REST, Scrum, Kanban
  • Platforms

    Linux, Ubuntu, Mailgun
  • Industry Expertise

    High-frequency Trading (HFT)
  • Other

    Front-end, Airbnb, Google Latitude, Data Engineering, Web App Development, Mailchimp API
  • Libraries/APIs

    Underscore.js, Facebook API, Doctrine 2, jQuery, Google Maps, Google+ API, Backbone.Marionette, Backbone.js, Balanced Payments API, Mad Mimi API, Mandrill API, LinkedIn API, Instagram API, Foursquare API, Twitter API
  • Storage

    MySQL, PostGIS, PostgreSQL


  • Bachelor's Degree in Computer Science
    2007 - 2009
    Pedagogical University of Cracow - Poland
  • Master's Degree in Philosophy
    2003 - 2009
    Pedagogical University of Cracow - Poland

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