Изображение профиля KimHyonJun
Флаг China Hunchun, China
На сайте с 24 декабря 2018 г.
0 Рекомендации


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I have over 10 years of experiences in iOS & Android application development with Backend web services. My core skills: - Native(iOS, Android): Swift, Java, Kotlin, Flutter, Objective-C, React Native, Ionic, SQLite, Realm - Web service & Backend: XML/JSON, REST/SOAP, PHP, HTML5, Python, Ruby on Rails, MySQL - Cloud backend: Firebase, QuickBlox, Digital Ocean Cloud, Parse, Amazon, Heroku, Back4app, Twilio, XMPP As a full stack mobile developer, I have experienced in mobile applications development in various categories like as Social networking apps, Business apps, Lifestyle apps, Education apps, Entertainment apps, Utilities apps, Travel apps. I promise following terms for our long term relationship - 16/7 available for live communication - App Store submit and approval - 6 Month of FREE after-service for any bug fixing - Documentation for the product and source codes - Progress update once a day - Dedicate 40+ hours per week Best Regards!
$50 USD/hr
7 отзыва(-ов)
  • 100%Выполненные работы
  • 100%В рамках бюджета
  • 100%Своевременность
  • 40%Рейтинг повторного найма


Последние отзывы

  • изображение John O. Project for Hengjun J. -- 19/07/25 07:31:59 $125.00 USD

    “Another great experience!”

  • изображение John O. Simple iOS App that converts images into videos $350.00 USD

    “Hengjun was an incredible partner on this project. We were able to bounce dev solutions as well as problem solve a few holes in the UX in near real time despite a large time difference. I very much appreciated his partnership in this project. Will hire again without question.”

  • изображение Hushang J. Android and ios app customize for E commercial $1100.00 USD

    “"Jin was fast and straight to the point, always offering insight to what might be a better option, thank you for the quailty app. I look forward to continue working with you on further jobs.””

  • изображение ideunkr 안드로이드 앱 개발이 필요합니다. $1250.00 USD

    “Jin completed a complex application project for us for iOS and Android and he provided good solutions to development challenges. He is a very capable developer and he always delivered when prompted, despite a language and time zone barrier. We have contracted him again for the maintenance of the applications and he assisted in uploading the applications for us on the AppStore and on Google Play. Jin is a hard working, willing and able guy and we can recommend him. Thank you Jin!”

  • изображение Mohamed S. Develop a Mac Application for imessage $120.00 USD

    “He is a very good freelancer and doesn't give up fast. he don't care about money as much he care about keep client satisfied i recommend him.”

  • изображение Ammar K. Project for Kim H. $40.00 USD

    “He did excellent job. Very professional.”

Опыт работы

Social Networking Mobile App Development

Nov 2010 - Sep 2017 (6 years)

Highly skilled team


Masters Degree

2003 - 2006 (3 years)


Google Certification, iOS Certification (2012)

Google, Apple


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  • Электронный адрес подтвержден

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