Profile image of jiangjiabao
Flag of China Yanji, China
Member since November 27, 2018
1 Recommendations


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⭐⭐⭐⭐⭐ MAIN SKILLS⭐⭐⭐⭐⭐ ---------- Mobile App Development-------- ♦ iOS Mobile App Development, Swift, Objective-C, RxSwift ♦ Android Mobile App Development, Java, Kotlin ♦ Ionic, React Native, Flutter, Native Script, Unity 3d ♦ Firebase, Google Map, Social login, Stripe Payments ♦ Image Processing, Video/Audio Processing ----------Web Development---------- ♦ React.js, Vue.js, Angular.js, Node.js ♦ Python, Flask, Django, Ruby on Rails ♦ Shopify, Wordpress, Woocommerce, Wix, Squarespace ♦ MongoDB, Mysql, MSSQL, Oracle ♦ Laravel, Codeigniter ♦ CSS, JAVA-SCRIPT, JQUERY, BOOTSTRAP, HTML, HTML5 , MYSQL ♦ Web Scraping, Selenium web driver -------- Windows Application Development-------- ♦ C++/C#/.Net Framework ♦ OpenCV, Computer Vision, AI, Metatrader, Deep Learning
$30 USD/hr
28 reviews
  • 97%Jobs Completed
  • 95%On Budget
  • 96%On Time
  • 19%Repeat Hire Rate


Recent Reviews

  • image of Lim K. Project for Yong Wen J. -- 19/07/04 20:16:34 $1200.00 USD

    “He is good and problem committed.”

  • image of Luis R. Aplicación móvil para pizzerías $150.00 USD

    “Actually I lost my money with this freelancer, you can check the chat conversations. I hurried and released the money without corroborating the work and I feel that he scammed me. The problem was: I had an application in IONIC which I tried on some occasions and generated the test apk. After a while I could not generate the apk and so I looked for a freelancer to help me with that. The freelancer I hired worked and generated the apk, as it did ?, I have no idea. But I imagine that he deleted, added, modified things, that allowed him to generate the apk, but in turn that apk does nothing on my phone, I can't even login. Why did I release the payment? Because when I generated the apk, the server was down and I could not prove, so I assumed that was why. When I raised the server the problem remained the same, I could not login. To get out of doubt, I deleted that apk and installed the previous one and that if I can enter. I kept discarding options and got another phone to try and the problem persists. The freelancer tells me: "I did your job, generate the apk", but at what cost?, That the project does not do what it did. In any case, I know that I will not recover my money, but I write, because the truth was a very bad experience, working with him and in the end, I did not get the results.”

  • image of Diego R. Protect my hls/m3u8 links from browser debugging $150.00 USD

    “He did a great job”

  • image of Cormac H. Update Sprite Builder App $200.00 USD

    “Worked around the clock to finish the app.”

  • image of Ivan P. Cordova App running even in background $75.00 USD

    “The project was not completed because of the framework. However YF did a great job dealing with the source code attempting in several ways to make it work. Thank you!”

  • image of Andrew N. Project for Yong Wen J. $1000.00 USD

    “Great job working on my website. Was very quick and finished the project super fast.”


A team manager for Mobile App & Unity & Web Development

Oct 2016

We have developed many website and android , iphone , unity projects. I can show you my projects.

A member of &

Jan 2016

I have solved the many difficult problems.

Android & iPhone Development

Apr 2013 - Mar 2016 (2 years)

I developed many android & iphone app. For example: driver app, rider app for Uber taxi, many mobile game such as "Tank Strong Emotion"



2009 - 2013 (4 years)


Research about Compressive of Image and Video

I published a graduation thesis "Research about compressive of Image and Video". I researched the H.264 and H.265 format.


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