Profile image of dlpigpen
Flag of Vietnam Nha Trang, Vietnam
Member since June 27, 2014
2 Recommendations


Online Offline
Over 5 years of experience in development, deployment and test environment of applications for mobile platform. (Linkedin profile: [login to view URL] ) I always support best quality and fast speed to my customer. I promise following service for my employer : - Highest quality. - Fast Speed. - Best Communication for every day. - After Service Service Description • Great experience in releasing and maintaining applications for iPhone or iPad in the App Store. • Experience and proficiency with C/C++, Java Android, Objective-C, Swift, PHP, CakePHP framework, basic Zend framework. • Good understanding JS, HTML, Photoshop… • Good knowledge and experience in working with iOS platform, OPP, SQLite, design patterns, Code, Interface Builder, iPhone SDK, OS/X Platform, Cocoa Framework; UIKit, CoreQuazt, OpenGLES, Cocos2d, Android SDK, Android NDK. • Good understanding Lua, Corona SDK Thanks for reading!
$30 USD/hr
26 reviews
  • 88%Jobs Completed
  • 100%On Budget
  • 100%On Time
  • 20%Repeat Hire Rate


Recent Reviews

  • image of loveofbiz Project for dlpigpen $2600.00 USD

    “I love working with Duc. He's the best person I've worked with on freelancer”

  • image of loveofbiz Write an iPhone application update $200.00 USD

    “I love working with Duc. He's saved a couple of projects for me. He's favorite provider on freelancer.”

  • image of loveofbiz help with push notifications $155.00 USD

    “One of my favorite providers on Freelancer. I absolutely love working with Duc. He does great work and he's always available.”

  • image of brodiej Project for dlpigpen -- 8 $100.00 AUD

    “Another fantastic effort from Duc - consistently delivers quality work first time everytime.”

  • image of fightclub1 Help me on Skype TODAY with Xcode, SWIFT, Cocoapods, and Paid per hour $385.31 AUD

    “Loved working with Ngyuen on this IOS XCODE app development.. he is very proficient and helpful and likes to do things very thoroughly.. he created back up on bitbucket and worked from there and kept me updated on the project.. Would love to work with again. BIA HOI! [19 July, 2016] Was a great treat to work with Nguyen.. super helpful and VERY proficient in Xcode and Iphone app development.. very helpful and mapped out a storyboard, and backed up to BitHub.. Would happily employ again. Bia Hoi :-)”

  • image of judodr22 Project for dlpigpen $375.00 USD

    “Duc deliver a outstanding project in no time. We will definitely work with him again.”


Mobile Team Leader

Nov 2012 - Dec 2013 (1 year)

* Development experience of Objective-C, XCode and Cocoa * App Store or Enterprise deployment. * Strong skills in Video Streaming server and client technologies, mobile encryption and security. * Knowledge of UNIX * Experienced with Shell scripts * Good knowledge of Interface Builder, iPhone memory management & Instruments. * MVC and source code control experience (e.g. Subversion) * Client-facing ability, articulate with excellent verbal and written communication.

iOS developer

Oct 2010 - Nov 2012 (2 years)

- UIKit, Core Foundation, Memory Management (ARC), Core Data, Software design patterns, Interface builder, KVC/KVO. - Experience in Obj-C, knowledge of C/C++ would be an advantage - Technical skills in web and database technologies - Knowledge of C/C+



2006 - 2010 (4 years)


iOS Developer (2010)


Duolingo Proficiency Exam in English (2015)


Affordable and convenient language certification from Duolingo Test Center.

CB140i Intro to Mobile NoSQL Apps (iOS) (2016)


This free online course, comprised of 19 video lessons with related hands-on labs, efficiently teaches learners the fundamentals of how to implement an iOS application relying on the features of Couchbase Mobile.


Wallpaper Fix - Best Editing Tool for iOS 7

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  • Numeracy 1
  • US English Level 1


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