Profile image of zhengzhe120
Flag of China Yanji, China
Member since June 22, 2014
5 Recommendations


Online Offline
Welcome to my profile! I have been working on mobile application development for 5 years over. During my tenure as a mobile app developer, I have acquired a multitude of skills and experience. My Expertise: - Blockchain Expert - iOS App Development (ObjectiveC, Swift, XCode) - Android App Development (Java, Android Studio, Gradle) - Web Development (PHP, Node.JS, Angular, Larave, .NET) - Database (MySQL, SQL Server, MongoDB, Firebase) - 3rd Party SDK Integration ○ Payment Gateway (PayPal, Braintree, Stripe, InApp purchase) ○ Messaging Platform (QuickBlox, Websocket) ○ Social Platforms (Facebook, Twitter, Google+, Linkedin) Why Me? - I am a fullstack developer with Mobile and Web skills - I can work on UI/UX design(Mockup & Wireframe) - I can configure Hosting Server and design database - I am very easy to communicate As demonstrated through the projects I have completed, I can build any type of mobile app or web page, even if your project is just an idea. Thanks, Zheng.
$35 USD/hr
26 reviews
  • 72%Jobs Completed
  • 82%On Budget
  • 100%On Time
  • 13%Repeat Hire Rate


Recent Reviews


Project Manager & Tech Lead Developer

Jul 2015 - Aug 2016 (1 year)

I have good experience with Project management & offering technical solutions. Before, I have been worked as the project manager of big project and I have leaded most of projects to success perfectly. Source control (Git, Bitbucket), Team management & Communication & Task management(Trello, Ansana, JIRA, Slack, etc), UI/UX design (providing creative & flexible ideas).

Web Backend & UI/UX design

Apr 2014 - Feb 2015 (10 months)

- Have developed the backend REST APIs on mobile App project using [login to view URL] , PHP/Mysql - UI/UX graphic design using Photoshop , Sketch , InvisionApp.

Experienced Mobile App Developer

May 2013 - Apr 2014 (11 months)

I have developed several Mobile Apps such as Social Networking App, Photo/Video editing/sharing App, On-Demand Ordering/Delivery App, Google Map, GPS tracking, Chat & Message etc. I am specialized in - Objective-C/Swift, Java - Social Networking, Payment gateway integration - Hardware & Bluetooth , iBeacon. - Google map, MapKit, Geo-locating. - Messaging implement using XMPP(Quickblox), Firebase and AWS - Push notification(APNS, FCM) - AWS, Parse, Firebase, Azure - Php, Mysql, AngularJS.


Bachelor of computer science

2007 - 2011 (4 years)


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