Jang Qiang Tong

EXCELLENT MOBILE DEVELOPER - Android, iOS

DanDong, China

$33.33/hr

(4.97)

What's the difference?
Overview

Now, I have full experience and expertise in delivering high performance mobile applications on platforms like iPhone, iPad, Android and Windows Phone.I usually used to make an effort to keep the high quality and exact time frame. Most of clients like this work.

My skills and experiences are following

- iPhone/iPod/iPad, Android
- Video/Audio Streaming, Video Editing, Decoding/Encoding
- MySQL, SQLite
- Google Map Service
- Cocos2D, OpenGL
- Box2D, Chipmunk
- Game Center, In-App Purchas…

more

Jang Qiang Tong has added 7 portfolio pieces. Create an account to review them.

Work History & Feedback

Simple one page iPhone, iPad, iPod and Android App

“Very Good Work”
5.00
Fixed Price $450

Jang development

“Another great job by Jang!”
5.00
3 hrs @ $33.33/hr
Earned $100

Android Payment Gateway Implementation

“A fine man to deal with, was able to do what most people could not with our app store”
4.85
51 hrs @ $33.33/hr
Earned $1,711

Looking for an iOS developer

“Great job overall. It was a difficult project but Jang managed to accomplish his tasks and find ways around obstacles. Will use again. Excellent!”
5.00
Fixed Price $600

Android Developer

“I was very happy with Jang's work and will definitely use him again in the future.”
5.00
35 hrs @ $33.33/hr
Earned $1,161

Android App Source Code - XML Parsing from the web resource

“Jang was an excellent developer. I don't know where to start on his qualities. Jang is very professional, prompt whenever you ask a question or want some clarification. He did my project within no time and also, had a lot of knowledge on the subject. He is one of the person you want in your team. Working with him in the future? Yes, it is no doubt.”
5.00
Fixed Price $44
Tests Taken
Name Percentile Score

Cocoa programming for Mac OS X 10.5 Test

27

Facebook Connect Test

90

Google Android Programming Test

96

Java Test

91

MySQL 5.0 Test

90

Objective C Test

84

PHP5 Test

99

Programming with C++ Test

91

U.S. English Basic Skills Test

98

UK English Basic Skills Test

97

XML 1.0 Test

72

iPhone Programming OS 4.0 Test

72