Profile image of chengcaijin
Flag of China Dandong, China
Member since March 28, 2017
8 Recommendations


Online Offline
Welcome to my profile !!! Producing the "Highest Quality" work for my clients and to satisfy them 100% completely with work. My Top skills ✅ iOS (iPhone, iPad), Object-C, Swift, XCode ✅ Hybrid, React Native, Ionic, Angular ✅ Android, Java, Android Studio, Eclipse ✅ Web: Node, React, PHP, Laravel, Python, Ruby on Rails, Javascript, jQuery, CSS , AJAX I’ll provide the following service to you during work with you. 1. Daily Report. 2. 100% client ongoing satisfaction with perfect quality of product. Thank you :)
$45 USD/hr
95 reviews
  • 99%Jobs Completed
  • 99%On Budget
  • 100%On Time
  • 33%Repeat Hire Rate


Recent Reviews

  • image of D-Side A. Project for Wang F. -- 5 $13421.00 USD

    “if you want confirmation see all my last comment :) very nice guy”

  • image of D-Side A. Project for Wang F. -- 4 $240.00 USD

    “days after days, every time amazing, thanks”

  • image of D-Side A. Project for Wang F. -- 3 $200.00 USD

    “Like Every day i'm verry happy to work with him. thanks”

  • image of D-Side A. Project for Wang F. -- 2 $220.00 USD

    “Thanks for this second day Work. This man is very nice he understand everything we say and works verry fast. like i said in my last comment, is sure i work with him again. thanks buddy”

  • image of D-Side A. Project for Wang F. $220.00 USD

    “Like Work With Him, verry pro, and work is verry nice. Is sure i work with him again. Thanks MAN”

  • image of Sherif S. Project for Wang F. $9200.00 USD

    “excellent work, will continue to work with him. Great communication and work”


IT Manager

Jun 2015 - Feb 2017 (1 year)

I've worked as a Project Manager.

Mobile Developer

Apr 2012 - May 2015 (3 years)

I have got lots of experience iOS/Android application development with Objective-C, Swift, iOS SDK, Cocoa, Local and Push-notification, In-App purchases, Core Image, CoreData, CoreAnimation, CoreGraphics, Image Processing, Video Processing, Social Network, REST-API, JSON, CocoaPods, git I have developed lots of iOS apps perfectly and they are available in Apple Store.


Bachelor Degree

2003 - 2007 (4 years)


  • Preferred Freelancer Program SLA
  • US English Level 1


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My Top Skills

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