Käyttäjän YouSheng profiilikuva
@YouSheng
Maan China lippu Shenyang, China
Jäsen alkaen 4. toukokuuta 2017
3 Suositukset

YouSheng

Online-tilassa Offline-tilassa
✨ 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 arvostelua
7.3
  • 100%Suoritetut työtehtävät
  • 100%Budjetin mukaisesti
  • 99%Ajallaan
  • 17%Uudelleenpalkkaamisaste

Portfolio

Viimeaikaiset arvostelut

  • käyttäjän ksemonche18 kuva food sector phone application $1000.00 USD

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

  • käyttäjän justintwhite kuva 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”

  • käyttäjän kaseypt kuva 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!”

  • käyttäjän RuiSync kuva Front End Custom Native App (IOS and Android) $4000.00 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! :)”

  • käyttäjän razzagtaylor kuva QR code apps $200.00 USD

    “good price”

  • käyttäjän Coderise kuva 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.”

Kokemus

Senior Software Engineer

Sep 2010 - Jun 2014 (3 years)

SoftWare Development, Service & Consulting and Technical Support.

Koulutus

Bachelor of Computer Engineering

2006 - 2010 (4 years)

Pätevyydet

Graduation certificate (2010)

Liaoning University

Graduation certificate of the Liaoning University

Julkaisut

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.

Todistukset

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

Varmennukset

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