Leo Chang
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Leo Chang

Game Developer


Tainan, Taiwan


Developing game application has always been my habit over the last 10 years, and I have developed many small game projects using various technologies. My core competency lies in system design and implementation of game development. I am seeking challenging projects that require exceptional skills and tie deadline. I have experience in the following areas: C/C++ Objective C AS 3.0 C# Php MySQL Unity 3D OpenGL/ES 1.x/2.0 SDL Cocos2d-iphone Smartfox

Leo Chang has added 10 portfolio pieces. Create an account to review them.

Work History and Feedback

  • Aug 2012 - Nov 2012

    Icon Artist

    No feedback given

    12 hours
    $11.11 / hr
    $133.32 earned

  • Aug 2012 - Sep 2012

    iphone app programmer
    What can I say? Leo was fantastic! I asked him to take over updating an app written by another programmer. Leo more than met my expectations, he updated and improved the function of my game "Gumball Words" immeasurably. It is now a much smaller file and a much more responsive game. Additionally, we had many problems with uploading to the app store because of certificates, keys, provisioning files, etc all previously managed by someone else. Leo took the extra time, without complaint and got it uploaded. I will absolutely use him again!
    18 hours
    $22.22 / hr
    $459.30 earned

  • Oct 2011

    Complete Survey on Assertion Failures
    Great Job
    $40.00 earned
    Fixed Price

  • May 2011 - Sep 2011

    iPhone Genie Effect

    No feedback given

    25 hours
    $13.33 / hr
    $328.86 earned

  • Jul 2011

    Online Game Tester
    Leo was very easy to work with and very knowledgeable
    $5.00 earned
    Fixed Price

  • Jun 2011

    Unity3D Game Board Prototype Proof of Concept Test. Easy Money
    Did a good job. Was happy for this quick project.
    2 hours
    $33.33 / hr
    $110.66 earned

  • View More (2)

Leo Chang has more jobs to show. Create an account to review them.


Name Score (out of 5) Time to Complete
Kernel Programming Test (Solaris 2.x internals) 2.75 Top 10% 33 mins
OpenGL Programming Test 4.25 Top 20% 12 mins
Game Programming Concepts Test 4.10 Top 10% 23 mins
System Programming Test 3.50 Top 30% 31 mins
Action Script 3.0 Test 3.90 Top 20% 37 mins
Programming with C Test 4.25 Top 10% 26 mins
Data Structures Test 3.40 Top 20% 40 mins
Programming with C++ Test 4.00 Top 10% 39 mins
Call Center Skills Test 4.40 Top 10% 19 mins
Java Test 3.60 Top 20% 36 mins
Objective C Test 2.75 Below Average 38 mins
Networking Concepts Test 3.50 Above Average 26 mins

Work History

1,715 hours worked
21 jobs


More than 30 hrs/week

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