Dariusz Urbanczyk

Dariusz Urbanczyk

Ruby, Rails, TDD, jQuery MySQL, PostgreSQL, Redis, Elasticsearch, Node

London, United Kingdom



What's the difference

Ruby On Rails - Freelancer

I am a full stack Ruby developer focused on Ruby, JS, Rails and Sinatra. You want to build an awesome application with high quality standard? you came to the right person.I have experiences with web application development from scratch to production with linux & OSX skills. Database experiences: MySQL, PostgreSQL, Mongodb;
Test frameworks: FactoryGirl, Rspec, TestUnit, Capybara.
Infrastructure experiences: Heroku, Amazon Web Service (EC2), Rackspace, Engineyard; Payme…


Dariusz Urbanczyk has added 14 portfolio pieces. Create an account to review them.

Work History & Feedback

We are currently seeking help on a variety of projects working with Ruby on Rails.

“Dariusz was a pleasure to work with and very fast learner. He communicated very well and went above and beyond expectations. I would hire him again for another project in a second!”
92 hrs @ $17.00/hr
Earned $1,567

Check RoR code

“Dariusz is a great RoR developer. He comleted the urgent task very quickly and in a professional manner. Definitely will turn back to him in future!”
2 hrs @ $22.22/hr
Earned $33

Web Programming

“Dariusz Urbanczyk has excellent programming abiltiy and fantastic communication skills ,his reachability, politeness,”
Fixed Price $6

Ruby on Rails programmer

No feedback given
Fixed Price $200

Ruby on Rails Web Application Developer

Job in progress

331 hrs @ $20.00/hr
Earned $6,610

Ruby on Rails jack of all trades

Job in progress

108 hrs @ $15.00/hr
Earned $1,690
Tests Taken
Name Percentile Score

Advanced PHP Test


Knowledge of Ruby Skills Test


Knowledge of jQuery 1.3.2 Skills Test


Mac OS X 10.5 Test


Ruby on Rails 2.3 Test


Ruby on Rails 3 Test


Ruby on Rails Test v1 (Old)


Ruby on Rails Test v2 (Old)


Upwork Readiness Test for Independent Contractors and Company Managers