Ivan I. Parfenchuk
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Ivan I. Parfenchuk

iOS/Ruby on Rails Top Rated Developer


St. Petersburg, Russia

Overview Play video

Hello and thanks for considering hiring me for your project! My iOS experience includes expert-level proficiency in all the core iOS components and frameworks like UIKit, Core Data, MapKit, Core Animation, Quartz 2D and so on, integration with various APIs and web services. I usually use Cocoapods for managing libraries, both Storyboards and xibs for the interface, KIF/specta/expecta for tests and specs. I also switched to Swift for my new projects. My Ruby on Rails skill set includes working with MySQL/PostgreSQL, MongoDB, RSpec/TestUnit/Capybara, Slim/Haml/ERB/RABL, JavaScript/CoffeeScript, Ember.js, Sidekiq, Redis and other numerous gems and technologies. Feel free to contact me for any kind of ... morework. less

Ivan I. Parfenchuk has added 11 portfolio pieces. Create an account to review them.

Work History and Feedback

  • Oct 2012 - Jun 2015

    ios-developer needed to develop new apps, update existing apps
    105 hours
    $29.00 / hr
    $3,039.78 earned

  • Aug 2012 - Nov 2012

    iOS Developer Needed (Urgent)
    Ivan is one of the best developers I have worked with. Always on time, available, and his submits high quality work. He is a pleasure to work with and I highly recommend him and we will work with him again.
    29 hours
    $28.00 / hr
    $802.48 earned

  • Jan 2012 - Jul 2012

    Simple iphone app required

    No feedback given

    20 hours
    $25.00 / hr
    $504.25 earned

  • Aug 2011 - Sep 2011

    iPhone Mobile App Foto...
    Perfect job, I highly recommend working with Ivan.
    $666.67 earned
    Fixed Price

  • Aug 2011 - Sep 2011

    Need Xcode development for app
    Ivan did a great job on this app. He was timely and efficient with what was provided. He is an excellent resource and we will use him again!
    2 hours
    $20.00 / hr
    $30.00 earned

  • Aug 2011

    Really basic iPhone app - just a booking form
    Perfect iPhone app, developed in a record time
    $30.00 earned
    Fixed Price

  • View More (3)

Ivan I. Parfenchuk has more jobs to show. Create an account to review them.


Name Score (out of 5) Time to Complete
Xcode 4.x Test 3.50 1st Place! 14 mins
iOS Programming Test 4.60 Top 10% 21 mins
Objective C Test 4.60 Top 20% 17 mins
Ruby on Rails Test 4.00 Top 20% 33 mins
iPhone Programming OS 4.0 Test 4.50 Above Average 40 mins
Adobe Photoshop CS3 Test 3.60 Top 20% 35 mins
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Work History

100% Job Success
1,791 hours worked
35 jobs


Less than 30 hrs/week
3 days response time


Phone Number: Verified

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1,339 hours

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