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Find the World's Best json Freelancers

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Adil S. - Mobile Developer (Android)

Adil S.

Mobile Developer (Android)

1,500 hours
“Adil is easily among the top Android developers on Upwork. I have been working with him on an Android project since february 2015 until now and it has been a pleasure. He works...”
  • Android App Development
Stefan V. - Senior iOS Developer (Objective-C, Swift) / iOS Architect

Stefan V.

Senior iOS Developer (Objective-C, Swift) / iOS Architect

2,179 hours
“It was nice to work with Stefan. He knew how to deal with a quiet complexe project involving several languages, and multiple algorithm and cases depending on this languages. The...”
  • iOS Development
  • json
  • XML
Andrei S. - Top iOS/Android Developer

Andrei S.

Top iOS/Android Developer

793 hours
“Andrei was excellent. He is very skilled developer who was responsive around the clock. He quickly understood the scope of the problem I was addressing, and nailed the end product....”
  • iOS Development
  • Cocoa
  • json
Amit S. - Expert Native iPhone and Android App Developer

Amit S.

Expert Native iPhone and Android App Developer

4,458 hours
“Great team work! Finished a job that would have taken longer then a week in two days. Constantly available to communicate with and implement all changes we had. Thanks Guys! Will...”
  • jQuery
  • Node.js
  • json
  • Java
  • PHP
Keyur A. - Full Stack App Developer

Keyur A.

Full Stack App Developer

1,008 hours
“I have used Keyur for several mobile app projects and have always received outstanding work. I will definitely continue using him for my future projects.”
  • Android App Development
Igor T. - Certified Magento / iOS / Android Developer

Igor T.

Certified Magento / iOS / Android Developer

0 hours
“Igor is a positive thinker, and an excellent do-er. I will rehire him. And better, I am rehiring him!”
  • Magento
  • PhoneGap
  • PHP
  • json
Karel S. - Senior iOS & Android Developer

Karel S.

Senior iOS & Android Developer

0 hours
Czech Republic
“It was my pleasure to work with Karel. Karel provided a work of good quality, he has great skills as a programmer. He is an excellent communicator and follows through on all...”
  • Android
  • iOS Development
  • C#
  • C
Evgheni P. - Senior PHP Developer (10+ years experience)

Evgheni P.

Senior PHP Developer (10+ years experience)

40 hours
“Top quality freelancer, excellent communication skills and very hard-working. Always available to speak on Skype and can come up with his own ideas and opinions to assist the project. I...”
  • Zend Framework
  • PHP
  • Git
  • HTML
Luke S. - Award-Winning Marketing & Sales Strategist

Luke S.

Award-Winning Marketing & Sales Strategist

322 hours
United States
“Luke was a great asset to my project! He was very fast and very good about answering all of my questions. He got me set up with some great affordable manufacturers and has been...”
  • Advertising
  • Copywriting
Andrei I. - Java/Grails Developer

Andrei I.

Java/Grails Developer

5,631 hours
“Andrej is an awesome freelancer. We worked over 1 year together, in total more than 1900 hours. Definitiv one of the best you can hire at upwork, we will continue our collaboration...”
  • Grails
  • Java
  • Hibernate
  • Git
Chirag P. - Expert in Mobile Application Development

Chirag P.

Expert in Mobile Application Development

553 hours
“Well done job! Great developer with very good technical skills. solved any problem during the project. Wonderful service and personal communication. Sure I will hire him again...”
  • iPhone App Development
  • PHP

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