Profile image of ybxqch8888
Flag of China Yanji, China
Member since October 5, 2015
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I am a Senior Mobile App Expert and have been building iPhone/iPad/Android applications since the release of the iPhone SDK in 2008, working on over 50+ applications in my career. I hold a Master's Degree in Computer Science from the Suzhou University of Science and Technology. EXPERIENCE: Objective-C, 7 years Swift, 5 year Core Data, 5 years AV Foundation, 5 years Git, 8 years Xcode, 7 years iOS, 7 years SKILLS: Languages: Objective-C, Swift, C/C++, HTML5, Java, CSS, Ruby, Javascript Frameworks: Core Foundation, Core Data, UIKit, AV Foundation, Map Kit, Core Motion, Core Location, CFNetwork, Ruby on Rails Libraries/APIs: Facebook iOS SDK, AFNetworking, Facebook API, SQLite, Twitter API Tools: GitHub Pages, Git, Xcode, Adobe Photoshop Platforms: iOS, Parse, Mac OS X, iAd, Google Ad mob, iCloud, Amazon Web Services Misc: Keychain, JSON, Refactoring, Product Management, Product Development, Security, Computer Graphics, UI Design Storage: MongoDB, NoSQL, Amazon S3, EC2, MySQL
$40 USD/hr
13 reviews
  • 77%Jobs Completed
  • 100%On Budget
  • 100%On Time
  • 17%Repeat Hire Rate


Recent Reviews

  • image of Greaves D. app develop ar $180.00 USD

    “Very good, and excellent work, am happy to use again, many thanks. we got the App we asked for.”

  • image of theCodeGatorz Project for Hong J. £100.00 GBP

    “First we spoke he said he could do the project and will start working on the project. Then i said lets have a call with my team but he said he is currently speaking with his team and told me it would take him 2 hours hence okay lol. So i sent 100 messages to him or her no reply, messages where read but no response. doesn't reply to your messages and takes jobs he can't even complete or do!”

  • image of Billy B. React Native App update $155.00 USD

    “Hong is not reliable guy. He said that he can do it surely, but he did nothing and never response. Bad experience.”

  • image of Dumitru T. Project for Hong J. $20.00 USD

    “She is real Expert Developer. Good communicator and understands all requirements easily. 
And she delivered the job in time with full requirements perfectly. I appreciate her effort for this job.
I plan to work with her further. I Highly recommend her for your business success. 
Thanks a million.”

  • image of Valentin J. iOS App prototype with ARKit and Swift $100.00 USD

    “Hong is a brilliant programmer. It is a pleasure to work with her, She is hard working and an excellent communicator. She explained all materials thoroughly and assisted us with changes and edits in the prototype. :)”

  • image of Andrea M. Publish an IOS app in Itunes €55.00 EUR

    “Very professional developer! With very great comunication that make the different”



Apr 2010

I've built this project as individual contributor in GIS. I take a this job in UI/UX, back-end API, database side. I used xcode as IDE for UI/UX version and used codeIgniter for building back-end API. I also designed database with detail logic using mysql. I currently work as swift/obj-c expert in my company......


Master\'s Degree

2004 - 2008 (4 years)


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