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@covernal
Bandera de China Shenyang, China
Miembro desde 17 de julio de 2014
22 Recomendaciones

covernal

En línea Desconectado
Hi, I have been doing Mobile & Web development for the past 11+ years, I have plenty of experience and a great eye for software development. I had completed all job perfectly on Freelancer.com. I am proud of my 100% Completion Rate!!!. I am able to offer competitive prices and deliver great work. I would like to work with you. I will provide the best product to you as you wanted. My Skills are : - Programming Languages - Objective-C / Swift 1.0 ~ 4.1 / Java /React-Native,Js/ C++ / C# / PHP / Angular. - Mobile Programming * iOS/Objective-C/SWIFT * Xamarin ( MVVMCross for multi-platform) * Hybrid programming (Cordova, Ionic, Accelerator Titanium, React Native) * Android SDK/NDK * BlackBerry * Qt Creator 5.4 (Cross platform) - Software Engineering / Architecture * Windows / Mac OS x / Linux Software * Image processing * E-Learning System - Web * Server management * Popular PHP framework * Bootstrap & * * MySQL/SQLite Thanks for your reviewing.
$50 USD/hr
102 comentarios
8.1
  • 98%Trabajos finalizados
  • 99%Dentro del Presupuesto
  • 95%A tiempo
  • 18%Tasa de recontratación

Portafolio

Comentarios recientes

  • imagen de app4tourguide Cordova GPS multimedia (audio/video/image/text) walking tour app (zip / sqllite / gps / deviceorientation / leaflet maps / local notifications) $1820.00 USD

    “Working with Ying was definitely worth it. Although it was my first time outsourcing a project it was definitely worth the time spent. There is a learning in communication from my side, as you have to really give thought about every instruction you write. Interpreting my communication in a different way then I had intented led to minor differences in project updates, but cannot be blamed on Ying, especially since they where very quickly resolved and in the end the app we are now looking at and using in the wild is wonderful. I am very happy we picked Ying Yi for our app and will definitely work with him again for my next project. Thank you Ying!”

  • imagen de instantbit Python / php API €23.07 EUR

    “THIS GUYS IS PERFECT IN PYTHON PROGRAMMING I WILL CONTACT HIM AGAIN A++++++++++++++++++++ BEST OF THE BEST”

  • imagen de chomane1982 Build an easy to use bot to auto send Twitter direct messages, $50.00 USD

    “It was great to work with Ying. He went out of his way to do above and beyond quality of work. The best freelancer I have used. %100 will use again”

  • imagen de Bbredtob Write an Android application £248.40 GBP

    “It was an absolute pleasure, Ying Y is amazing. I would recommend him beyond words. - Communication is outstanding. Any time I needed him, he would reply quickly. - He really understands the project and perfects it. - He works really hard in getting you the best product. He said 7 days for completion for me and then did it in 2. - Very good English speaking. - He really cares about the customer and went beyond expectations for me. Definitely worthy of his reputation and I will certainly be using his services again. Hire this man!!!”

  • imagen de limsophea95 simple mobile app with immediate complete $250.00 USD

    “Wonderful work”

  • imagen de Olass Improve current iOS app $155.00 USD

    “Outstanding work, will definitely use again :)”

Experiencia

Software engineer

May 2006 - Oct 2010 (4 years)

Educación

PHD Computer Engineering

2003 - 2007 (4 years)

Certificaciones

  • US English Level 1
    90%
  • Preferred Freelancer Program SLA
    89%
  • PHP Level 1
    83%

Verificaciones

  • Conectado a Facebook
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  • Pago verificado
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  • Correo Electrónico Verificado

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