Jin Jinwang

Jin Jinwang

Experienced Android | iOS | Web Developer

Dandong, China



What's the difference?
Jin Jinwang

Jin Jinwang

Experienced Android | iOS | Web Developer

android-app-development ios-development facebook-api objective-c xml iphone-app-development sqlite google-maps-api twitter-api apple-xcode forum-posting html5 javascript phonegap corona-sdk gps-development game-development box2d-game-engine web-content-management xml-web-services google-apps video-streaming jquery-mobile skype-development video-conversion radio-show-hosting youtube-api database-programming yahoo-search-marketing pattern-recognition textpattern facebook-marketing facebook-games-development urban-design email-technical-support ajax css jsp mobile-app-development blackberry-app-development cocos2d cocoa-touch website-development jquery google-docs google-calendar-development vpn payment-processing paypal-integration embedded-systems zoomla wordpress php ui-design apple-uikit-framework web-design game-design game-testing translation-armenian-english english-tutoring google-places-api google-plus github graphic-design graphics-programming motion-graphics rss windows-phone frontend-development jdeveloper twitter-bootstrap google-searching google-app-engine opengl opengl-es dropbox-api pdf-conversion git svn html sencha node.js amazon-web-services phpmyadmin xhtml web-testing frontpage mysql css3 codeigniter kohana java xml-rpc asp.net tortoise-svn non-disclosure-agreements skype security network-security database-design database-modeling database-administration manual-testing ruby ruby-on-rails perl web-os-app-development c# .net-framework c++ sql asp delphi borland-c++-builder eclipse 00 more less

✪✪✪✪✪ Mobiles will make the WORLD beautiful!✪✪✪✪✪

I am a skilled mobile developer with 4 years of experience developing on both the Android platform and on iOS. I have developed on Java for many years and obtained Sun Certification in 2000. I can get a lot done in a short time, and I'd welcome the chance to complete a high quality project for you.

Currently, iPhone/Android/Blackberry development is my core area of interest. I am very fluent in Objective-C/Java application development. I have m…


Jin Jinwang has added 16 portfolio pieces. Create an account to review them.

Work History & Feedback

Android developer for imaging and document safety app

“Jin did great job delivering in a tight timeline. Thank you!”
15 hrs @ $33.33/hr
Earned $500

Android mobile application

“Jin is a great developer.Highly recommended!!”
498 hrs @ $33.33/hr
Earned $13,515

Experienced Android Developer

“Jin is one of the best Android programmers I've ever dealt with.I was working with another team that had spent months trying to resolve some issues but with no luck. Jin to joined the team, and within days, he was able to learn their codes, resolve all outstanding issues, and improve app.Jin is a workaholic who doesn't mind sacrificing his time to make a client happy. I'm already lining up more projects for him.”
69 hrs @ $29.00/hr
Earned $2,006

Android app development

“Jin has done a good job for me. I am very happy working with him, and I can recommend him to all that needs a good android programmer. I will hire Jin for any of my future android applications.”
25 hrs @ $33.33/hr
Earned $833

Android/Apple Developer

“Jin is an amazing programmer to work with and his quality of work is amazing. His ability to make your vision come to life is unmatched and he takes the time to make sure he gets it right no matter how many revisions. Jin communicated well with me throughout the process and ensured that all of my request were completed.Jin is a joy to work with and I highly recommend him to others. I hope to establish a long term relationship with Jin as working with him was great. Jin was also very understanding and didn't hesitate to explain parts of the process that I was unfamiliar with. He is very eager and willing to work hard and produce an exceptional application.I hope to do many more projects with him in the future and plan on hiring him again.”
113 hrs @ $33.33/hr
Earned $3,766

iPhone App Development

“Cutomer joy gives Jin joy”
164 hrs @ $33.33/hr
Earned $5,466
Tests Taken
Name Percentile Score

Cocoa programming for Mac OS X 10.5 Test


Facebook Connect Test


Google Android Programming Test


Objective C Test


U.S. English Basic Skills Test


XML 1.0 Test


iPhone Programming OS 4.0 Test