Ruby on Rails Full-Stack Developer

Freelance Ruby on Rails Developer
Company: Alternative Media, Australia
January 2013 - April 2013
Ruby on Rails - I made the project from scratch and deployed to production designing the database first with PostgreSQL. The task was to allow users to browse through different CSS themes with extensive back-end end front-end (Javascript + jQuery) functionality. Also among other things there is a user authorization with Devise/Omniauth and authorization with Facebook, Google+ and Twitter, user history tracking with JavaScript, algorithm to present only wanted themes to the users, permalinks, guest users functionality, theme preference tracking, sending emails option with SendGrid/Heroku.

Freelance Ruby on Rails Developer
Company: Bonofa, Germany
October 2013 - November 2013
Ruby on Rails - developing Ewallet personal banking system using Ruby on Rails, jQuery, HAML, CSS, Bootstrap

Freelance Ruby on Rails Developer
Company: SmartCheckups, Belgium
September 2013 - November 2013
Adding new features and fixing bugs using Ruby on Rails 3, jQuery, HTML, CSS, Bootstrap 3

Freelance Ruby on Rails Developer/Project Manager
Company: Discovery Channel
May 2013 - August 2013
Ruby on Rails - I coordinated international team from Russia, Norway and Poland. I was responsible for developing Customer Relationship Management system (Ruby on Rails), assigning tasks to the rest of the team and making sure that everything is working and inside the deadline requirements

Freelance Ruby on Rails Developer
Company: Ballinger Consulting
March 2013 - May 2013
Ruby on Rails, HTML, CSS, jQuery, JavaScript, RSpec, Bootstrap, PostgreSQL

Ruby on Rails Developer
Company: minus5
November 2011 - November 2012
Responsibilities:
- Development of a mathematical game based web page (graph
theory, combinatorics) - Ruby on Rails, jQuery, HTML, Java Script, CSS, SQL, Unix
- Participation in development of KenKen web page (mathematical puzzles) ; cooperation with the company from New York (www.kenken.com) - Ruby on Rails, jQuery, HTML, Java Script, CSS, SQL, Unix
- Web based application for mobile providers and clients interaction in Sports Betting Industry - Ruby on Rails, jQuery, HTML, Java Script, CSS, SQL, Unix
- Web based application for creating profit reports on hundreds of betting machines around the country – Ruby on Rails, jQuery, HTML, Java Script, CSS, SQL, Unix

Software Developer
Company: QuaMatik
June 2011 - October 2011
Responsibilities:
- Participation in software development of FORMIT application for Android mobile phones(http://formit.t-com.hr), Java/Eclipse
- Participation in development of Mailing Service software (sending/receiving email software) - Microsoft VB .NET

Software Developer
Company: Institute for Nuclear Technology
August 2009 - April 2011
- Signal/Image processing algorithms development for finding flaws/damage on the nuclear power plant \'s steam generator tubes - MATLAB, C# .NET

- Using the minimization of energy deformation functional, a certain kind of deformation has been introduced, which represents the difference between similar signals. Distinguishing the signals is necessary to determine which signal comes from detection of flaw in the steam generator tubes, and which signal comes from the presence of the tube holder - Microsoft C# .NET

- Signal matching algorithms using correlation and other signal matching
techniques. Their purpose was searching for the center of tube holders; Microsoft C# .NET

- Optimal path planning algorithms for robot with two degrees of freedom in the discrete two-dimensional space coordinates. Application of the algorithm is in the flaw inspection inside steam generator tubes. The work included prototype testing of possible configurations. Microsoft C# .NET

- C # application that calls an SQL database with the purpose of keeping record of employees and clients of the company. This work was conducted as part of the test for the acquisition of title ‘Developer of Business Applications’ - C #. NET.