Profile image of okzhang321
Flag of China Dandong, China
Member since November 8, 2018
12 Recommendations


Online Offline
I am an iOS/Android developer with more than 7 years of experience and 150 completed projects. I use native languages for applications development: Objective-C for iOS and Swift, Java and Kotlin for Android. My #1 goal will always be to meet your needs and deadline. Besides, I can easily read and understand other people's code. My slogan is "PROVIDE 24/7 FOR MY CLIENTS!" I have experience in the following spheres (expertise) of mobile development: 1. Social networks 2. Dating apps 3. Messengers/Chat apps 4. Any apps for business purposes (that use different forms/cloud storage of text, images of other data etc). 5. Apps that use audio technologies and processing 6. News apps 7. AR-SLAM Other skills: o Web Development - Backend: PHP, Laravel, Codeigniter - Frontend: JavaScript, jQuery, AngularJS, ReactJS, HTML5, CSS - Databases: MySQL, Sqlite o Desktop Applications - C/C++ - Java/Javafx - VB.NET, C# - Qt o Python - scripts to automate routine tasks Version control: SVN, git
$30 USD/hr
208 reviews
  • 100%Jobs Completed
  • 90%On Budget
  • 94%On Time
  • 11%Repeat Hire Rate


Recent Reviews

  • image of Aaron D. Project for Wanjing X. $500.00 USD

    “Wanjing has been a godsend in regards t deliver the project and recovering from the previous developer. Would work again with him.”

  • image of Rashim K. Connecting the front end of a website to the database and do some changes $240.00 AUD

    “Best Freelancer I have ever worked with. Lives on the slogan in her profile. Will definitely work again with Wanjing. Highly Recommended. Really appreciate her efforts.”

  • image of Shak G. Project for Wanjing X. $70.00 USD

    “the best freelancer i have worked so far , she is so kind and help you in every step , surly will hire her agian and again”

  • image of Stav J. Kotlin Expert for parsing the JSON $50.00 USD

    “Good Job! She is working hard until the job complete. I was so happy to work with her. I recommend her to others. She is a really Kotlin Expert”

  • image of Thomas M. modification of $500.00 USD

    “truly a great freelancer. knows exactly what she is doing. asks all the right questions and gets the job done. will rehire”

  • image of G0mm AI search algorithms $70.00 AUD

    “I highly recommend Wanting X. She is knowledgeable and professional, and delivered my work on time.”


Senior Software Engineer

Jan 2015 - Jun 2018 (3 years)

Very excited work in here and get much experiences of ios and android development.


Bachelor of Computer Information

2010 - 2014 (4 years)

Master of Software Engineering

2015 - 2016 (1 year)


Oracle Certified Association (2017)


The Oracle Certified Associate examination measures a candidate's basic skills in managing Oracle systems.


Android app development introduction

Simple introduction of app development.


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