Miroslaw Maziarz

Miroslaw Maziarz

Senior Ruby on Rails Developer with Passion

Sandomierz, Poland



What's the difference

I have more than 8 years of experience in commercial web development. Over the last 7 years I have developed a variety of applications using Ruby On Rails, JavaScript, TDD, SASS, PostgreSQL, MySQL, Amazon EC2, Rackspace and Heroku.

I am focus on productivity and quality; I am among the top 10% freelancers who passed the tests in RubyOnRails, PostgreSQL and Internet Security.

I am interested in building the best quality software that means well designed, easy to maintain, easy to extend to a n…


Miroslaw Maziarz has added 7 portfolio pieces. Create an account to review them.

Work History & Feedback

Ruby on Rails developer for custom web app

216 hrs @ $36.67/hr
Earned $7,915
“Our project manager was extremely happy with Mirek's code. He met deadlines, made himself available whenever we needed to reach him, and has been extremely helpful.”


Senior Ruby on Rails Developer for SaaS Project

642 hrs @ $27.78/hr
Earned $17,931
“Mirek is a responsible and diligent contractor, but not the right long term fit for our project.”


Ruby on Rails code interview for Learner Management System

8 hrs @ $36.67/hr
Earned $299
No feedback given

FAST AND EXPERIENCED DEVELOPER WANTED (Javascript, Ruby on Rails, Chrome Extensions)

202 hrs @ $36.67/hr
Earned $6,368
Job in progress

Tests Taken
Name Percentile Score

Internet Security Test


PostgreSql 8.1.3 Test


Ruby on Rails 2.3 Test


Ruby on Rails Test


Ruby on Rails Test v1 (Old)


U.S. English Basic Skills Test


Unix Test


oDesk Readiness Test for Independent Contractors and Staffing Managers