Profile image of coco50511
Flag of China Dandong, China
Member since July 12, 2018
1 Recommendations


Online Offline
Senior developer with experience in Blockchain, Mobile app and Web service, Android firmware(AOSP & custom ROM), linux(script & driver), network(protocol & app). I have skilled in C++, Golang, Java, Python, Ruby, Node.js and so on. I want to help you and your project to success with passion and frankness. EXPERIENCE 1) 3 years in blockchain and financial trading - Blockchain coin fork - Cryptocurrency Exchange System - Smart Contract based on ERC20 token - Wallet for web and mobile - FIX (Financial Information eXchange) and Tradingview 2) 7 years in mobile app + Web service, Android firmware. - Ionic, Android SDK, CodeIgniter, Ruby on Rails, Wordpress - AOSP(Android source code, firmware) for android phone, tablet, tv box - Rasberry Pi 3) 4 years in development of NOS(network operating system) for network L2/L3 switch and openwrt for Wifi AP. SKILLED DEVELOPMENT LANGUAGE - C/C++, Java, Golang, assembly, C# - Python, PHP, Ruby, Node.js, Javascript, AngularJS - Solidity
$30 USD/hr
7 reviews
  • 100%Jobs Completed
  • 93%On Budget
  • 100%On Time
  • N/ARepeat Hire Rate


Recent Reviews


Software Engineer

Apr 2017

I have been developing blockchain, mobile and web based software.

Software Engineer

Jun 2010 - Mar 2017 (6 years)

I had worked for the customization of Android os and the porting it to the devices such as android phone, tablet pc, tv box and so on. I have experience in MediaTek, Allwinner, Rockchip, AMLogic soc. And I have experience in the secure booting for firmware on Rockchip and AMLogic soc.

Software Engineer

Dec 2006 - May 2010 (3 years)

I worked as a software engineer which develop the NOS (network operating system) of network equipments. We ported the NOS to the new type of equipment and developed the network functions according to network protocol standards.



2002 - 2006 (4 years)


  • HTML5 Basics 1
  • PHP Level 2
  • Android 1
  • Preferred Freelancer Program SLA
  • US English Level 1


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