Profile image of YouSheng
@YouSheng
Flag of China Shenyang, China
Member since May 4, 2017
3 Recommendations

YouSheng

Online Offline
✨ 100% SATISFACTION & BEST QUALITY ✨ Main Expertise; - Design and develop Native iOS/Android applications using Swift, Obj-C, Java - Hybrid app development using React native, Xamarin Native & Forms, Ionic - Expert in OOP, 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, etc - 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, Bugsnag)
$50 USD/hr
45 reviews
7.3
  • 100%Jobs Completed
  • 100%On Budget
  • 99%On Time
  • 17%Repeat Hire Rate

Portfolio

Recent Reviews

  • image of ksemonche18 food sector phone application $1000.00 USD

    “Very open, speedy and prompt communication. Good visual designs and made exactly what was described.”

  • image of justintwhite Make some Changes to an App -- 2 $1555.00 USD

    “Great product faster than expected.I will be using him on all future app projects”

  • image of kaseypt Develop mobile app $7000.00 AUD

    “Jin did an amazing job developing my app. He worked very fast and was easy to communicate with. Very happy with the end project!”

  • image of RuiSync Front End Custom Native App (IOS and Android) $4500.00 CAD

    “Jin Y. is fast and efficient. Excellent knowledge of backend and frontend app development. I would definitely recommend anyone to work with him. Excellent Work! :)”

  • image of razzagtaylor QR code apps $200.00 USD

    “good price”

  • image of Coderise Build a mobile app backend and first stage native for iOS and Android $1850.00 USD

    “Jin Y. is an excellent professional, gave very good feedback and suggestions, great communication, and I can only recommend him for anyone who wants the best freelancer out there.”

Experience

Senior Software Engineer

Sep 2010 - Jun 2014 (3 years)

SoftWare Development, Service & Consulting and Technical Support.

Education

Bachelor of Computer Engineering

2006 - 2010 (4 years)

Qualifications

Graduation certificate (2010)

Liaoning University

Graduation certificate of the Liaoning University

Publications

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.

Certifications

  • iPhone Development 1
    100%
  • US English Level 1
    100%
  • Android 1
    97%
  • PHP Level 1
    95%
  • Preferred Freelancer Program SLA
    94%

Verifications

  • Facebook Connected
  • Preferred Freelancer
  • Payment Verified
  • Phone Verified
  • Identity Verified
  • Email Verified

My Top Skills

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