Profile image of rjr121
@rjr121
Flag of China Yanji, China
Member since May, 2013
1 Recommendations

Alex Kim 

I have started programming with c/c++ language from April 2006 and have started programming for mobile application development from March 2009. Every time new mobile devices and new technical was released, I purchased the new devices and I studied them very hard and I have been working with mobile app development so far. All the while, I have developed many Android and IOS application for many previous clients. For High Quailty, For None Bug Product, Supportting After Service, It's my rule in developing the product. I always will keep good communication on skype and via email during processing the project and I always will suggest many good ideas to make your project run successfully. I believe my skills would be ideal for your project. I have technical skills as following. - JAVA, Objective-C/Swift, C/C++, C#, Python, PHP, Javascript - Mobile Application Development (IOS, Android, PhoneGap, Xamarin) - Web Service (REST API, MySQL/MSSQL/Oracle, Amazon EC2/S3 Service) - Messaging App Development (XMPP, Parse SDK) - Game Development - Music Social Technical. - Face Recognition Technical. - Project Revision Control System (SVN, GIT) - Custom Desktop Application (Windows/Mac/Linux) - Windows Kernel Driver Development (Network Drivers, File System Drivers, Plugin Device Drivers) Thank you for considering my overview. Best regards David Weng.
$30 USD/hr
26 Reviews
6.0
  • 76%Jobs Completed
  • 100%On Budget
  • 94%On Time
  • 29%Repeat Hire Rate

Recent Reviews

  • image of satinsoftware Utility to program MSR90 Magnetic Card swipe reader USB device $736.00 AUD

    “Handed a difficult and unusual task to tame and harness a limited hardware device, RJR just stuck at it and was flexible enough to adapt as limits were encountered.”

    satinsoftware Flag of Australia 9 months ago.
    • C Programming
  • image of mgglabs Ajax Dialog with js $210.00 USD

    “Very great job and very very fast. I will hire again without doubt”

    mgglabs Flag of Chile 1 year ago.
    • Javascript
    • HTML
    • jQuery / Prototype
  • image of livelenz Virtual OPOS Service - repost $2041.10 CAD

    “Excellent knowledge of C++ and Windows Programming. Completed a challenging project.”

    livelenz Flag of Canada 1 year ago.
    • C++ Programming
  • image of Zhats Private project for BlueSky $105.00 USD

    “Very professional programmer. Recommend to anyone who wants to get the high quality work.”

    Zhats Flag of Ukraine 1 year ago.
    • C Programming
    • .NET
    • C++ Programming
  • image of ihc061202 james wang $10.00 USD

    “great great Freelancer.”

    ihc061202 Flag of United States 1 year ago.
    • Visual Basic
    • .NET
    • SQL
    • C# Programming
    • C++ Programming
    • Hire me
  • image of venkatjasti Test applications support $160.00 USD

    “outstanding support and skills.”

    venkatjasti Flag of United States 1 year ago.
    • C Programming
    • C# Programming
    • C++ Programming
    • Hire me
    • Assembly
    • x86/x64 Assembler

Education

Doctor

2005 - 2009 (4 years)

Bachelor

2002 - 2005 (3 years)

Badges

  • Smooth Operator

    Complete 10 projects on time.
  • Perfectionist

    Receive 5-star ratings in 90% of your completed projects (minimum 10 projects).
  • Simply the Best

    Complete 5 or more projects, with a 95% completion rate.
  • Mover and Shaker

    Create 50 Milestones.
  • The Spartan

    Bid on 300 projects.
  • Deck the Halls

    Participated in the 2013 twelve days of Freelancer Festivities
  • The Regular

    Log in every day for 1 week.
  • The Economist

    Complete 10 projects on budget.
  • Feedback Guru

    Receive 10 reviews
  • Warren Buffet

    Complete a project worth over $1000 USD.
  • High Roller

    Complete a project worth over $500USD (or equivalent) on Freelancer.com.
  • The Critic

    Post 10 Reviews.
  • Quick Pick

    Award your project within 24 hours of posting
  • The Giver

    Award your project to a Freelancer.
  • Smart Money

    Create 10 Milestones.
  • The Biller

    Create an hourly invoice.
  • US English Qualified

    Pass the US English Exam (Level 1)
  • Fast Responder

    Bid within 2 minutes of a project being listed.
  • The Seeker

    Bid on 20 projects.
  • All Star

    Receive a 5-star rating for a project.
  • The Adventurer

    Complete your first project.
  • Nine-to-Fiver

    Win a project and accept the offer.
  • The Perfectionist

    Edited a bid.
  • Mover and Shaker

    Create 50 Milestones.
  • Deck the Halls

    Participated in the 2013 twelve days of Freelancer Festivities
  • Warren Buffet

    Complete a project worth over $1000 USD.
  • Smooth Operator

    Complete 10 projects on time.
  • Perfectionist

    Receive 5-star ratings in 90% of your completed projects (minimum 10 projects).
  • Simply the Best

    Complete 5 or more projects, with a 95% completion rate.
  • The Spartan

    Bid on 300 projects.
  • The Economist

    Complete 10 projects on budget.
  • High Roller

    Complete a project worth over $500USD (or equivalent) on Freelancer.com.
  • Smart Money

    Create 10 Milestones.
  • All Star

    Receive a 5-star rating for a project.
  • The Regular

    Log in every day for 1 week.
  • Feedback Guru

    Receive 10 reviews
  • The Critic

    Post 10 Reviews.
  • Quick Pick

    Award your project within 24 hours of posting
  • The Giver

    Award your project to a Freelancer.
  • The Biller

    Create an hourly invoice.
  • US English Qualified

    Pass the US English Exam (Level 1)
  • Fast Responder

    Bid within 2 minutes of a project being listed.
  • The Seeker

    Bid on 20 projects.
  • The Adventurer

    Complete your first project.
  • Nine-to-Fiver

    Win a project and accept the offer.
  • The Perfectionist

    Edited a bid.

Exams

  • Freelancer Orientation
    80%
  • C 1
    86%
  • C++ Level 1
    78%
  • Numeracy 1
    88%
  • US English Level 1
    78%

My Top Skills

  • C Programming 9
  • .NET 7
  • PHP 4
  • Javascript 1
  • SQL 1
  • XXX 1
  • Algorithm 1
  • Java 0
  • Python 0
  • Translation 0
  • Banner Design 0
  • Data Processing 0
  • Engineering 0
  • Excel 0
  • iPhone 0
  • Android 0
  • Social Networking 0
  • Testing / QA 0
  • Facebook Marketing 0
  • Cloud Computing 0

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