Profile image of YouSheng
Flag of China Shenyang, China
4 Mayıs 2017 den beri üye
3 Tavsiyeler


Çevrimiçi Çevrimdışı
My Main Expertise; - Design and develop Native iOS/Android applications using Swift, Obj-C, Java - Hybrid app development using React native, Ionic - Have extensive knowledge and experiences in OOP(Object Oriented Programming) Architecture - Expert in Multi-Threading, Client/Server Programming, Database Programming, Networking - Building backend service using Php(Laravel, Codeigniter), Node.JS, Python. - Database Programming (MySQL, Sqlite, Realm, MongoDB, Dynamo, PostgreSql) - Social Media Integration, Geo-Location, GPS tracking, Payment gateway integration. - Cloud Backend service integration such as Firebase, AWS, QuickBlox ... - Image/Video processing using OpenCV, OpenGL, 3rd party plugins. - High Web development skill in HTML5, Javascript, BootStrap, Php, Angular. - Server Management (AWS EC2, Digital Ocean, Heroku) - Source Version Control(Git/Bitbucket/SVN and etc) - Task/Team Management tool (Github, Trello, Jira, Slack) - Bug tracking system(Instabug, Sentry, Bugsnag)
$50 USD/sa
33 değerlendirme
  • 100%Tamamlanmış İşler
  • 99%Bütçe Dahilinde
  • 98%Zamanında
  • 24%Tekrar İşe Alım Oranı


Son Değerlendirmeler

  • image of Justin T. Project for Jin Y. -- 5 $1600.00 USD

    “I have very much enjoyed my working relationship with Jin. Time after time he has impressed me with his work and speed. I will not be looking for any other developer anytime soon.”

  • image of Omaralawar Project for Jin Y. $200.00 USD

    “speaks good english and easy to communicate”

  • image of Maxxen iOS & Android App - Development €4500.00 EUR

    “It was a pleasure working with Jin. He not just delivers on time and budget, he also gave us good advices through the development process. After we changed some functions for the app he directly implemented it. The communication also went perfectly, he was always reachable and friendly. His long experience in development makes him to my number #1 choice when I have more projects to be done. Highly recommend Jin Y. to all!”

  • image of ABChelp Help me finish my App €376.00 EUR

    “Jin is an excellent programmer, we highly recommend Jin for his expert knowhow in Xcode! He is innovative and impulsiv, that meaning he will an answer quickly and work fast! Our work in abchelp as/corp. is to digitalise medical emergency care for very sick people, thank you Jin for saving lives with us! <3”

  • image of pbidev Project for Jin Y. $100.00 USD

    “Jin is Very knowledgeable.”

  • image of liranaba Android app developer $200.00 USD

    “Well experienced skillful app developer. He is willing to work hard to complete the project on time and deliver top quality result on time! On top of that, Yousheng understands a customer need and can explain the process to new app developers like me.”


Senior Software Engineer

Sep 2010 - Jun 2014 (3 years)

SoftWare Development, Service & Consulting and Technical Support.


Bachelor of Computer Engineering

2006 - 2010 (4 years)


Graduation certificate (2010)

Liaoning University

Graduation certificate of the Liaoning University


Semantic validation of environmental observations data Environmental Modelling and Software.

In this paper, we focus on one such language, the Water Data Transfer Format (WDTF), and present an approach for validation of WDTF data contents. We show that by using Semantic Web technologies, we can express those constraints not captured by WDTF and check their consistency with respect to data through a query reduction technique that allows existing reasoners to be used for data validation.


  • iPhone Development 1
  • US English Level 1
  • Android 1
  • PHP Level 1
  • Preferred Freelancer Program SLA


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