Käyttäjän covernal profiilikuva
@covernal
Maan China lippu Shenyang, China
Jäsen alkaen 18. heinäkuuta 2014
23 Suositukset

covernal

Online-tilassa Offline-tilassa
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
104 arvostelua
8.1
  • 98%Suoritetut työtehtävät
  • 99%Budjetin mukaisesti
  • 96%Ajallaan
  • 19%Uudelleenpalkkaamisaste

Portfolio

Viimeaikaiset arvostelut

  • käyttäjän lappfreelancer kuva Ionic app refinement $220.00 USD

    “Ying Y is a great developer. I am very happy to have worked with him. He is fast, precise and knows very well what he is doing. He communicates very well, and managed to quickly identify the solution to the problems. I would definitely work with him again.”

  • käyttäjän adventiaau kuva Ongoing Ionic 1 and Angular 1 development on existing apps $1980.00 AUD

    “Great - will be again in the future!”

  • käyttäjän app4tourguide kuva 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!”

  • käyttäjän instantbit kuva Python / php API €23.07 EUR

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

  • käyttäjän chomane1982 kuva 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”

  • käyttäjän Bbredtob kuva 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!!!”

Kokemus

Software engineer

May 2006 - Oct 2010 (4 years)

Koulutus

PHD Computer Engineering

2003 - 2007 (4 years)

Todistukset

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

Varmennukset

  • Facebook yhdistetty
  • Suositeltu freelancer
  • Maksutapa varmennettu
  • Puhelin varmennettu
  • Henkilöllisyys varmennettu
  • Sähköposti varmennettu

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