Ivan I. Parfenchuk

Ivan I. Parfenchuk

iOS/Ruby on Rails Top Rated Developer

Novosibirsk, Russia



What's the difference?

Hello and thanks for considering 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 interface, KIF/specta/expecta for tests and specs. Also, I'm already using Swift components in my production apps.

My Ruby on Rails skill set includes w…


Ivan I. Parfenchuk has added 14 portfolio pieces. Create an account to review them.

Work History & Feedback

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 hrs @ $28.00/hr
Earned $802

iPhone Mobile App Foto...

“Perfect job, I highly recommend working with Ivan.”
Fixed Price $667

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 hrs @ $20.00/hr
Earned $30

I need a simple, interactive child's toy made for the iPhone (quickly).

“I enjoyed working with Ivan, he was enthusiastic about the project and that attitude made working with him a pleasure. Ivan has excellent English language skills and was very cooperative and helpful. We expanded the scope of the job to include graphic design and I was very happy with the results.He is very knowledgeable in creating iPhone apps. I will definitely hire Ivan again for future projects.”
42 hrs @ $22.22/hr
Earned $1,013

Really basic iPhone app - just a booking form

“Perfect iPhone app, developed in a record time”
Fixed Price $30

Simple iPhone App

“Ivan is the man! His work was high quality and very impressive!”
Fixed Price $278
Tests Taken
Name Percentile Score

Adobe Photoshop CS3 Test


Objective C Test


Ruby on Rails Test


iOS Programming Test


iPhone Programming OS 4.0 Test