Profile image of KongHyanJa
Flag of China Longjing, China
Member since December 29, 2018
2 Recommendations


Online Offline
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!
$30 USD/hr
23 reviews
  • 92%Jobs Completed
  • 93%On Budget
  • 93%On Time
  • 14%Repeat Hire Rate


Recent Reviews

  • image of Maria P. Project 20147668 has been deleted €150.00 EUR

    “Professional tutor online and expert data analyst with python, hadoop, machine learning, software architecture. She's very consistent with communications always on time. I would work with her again. Highly recommended.”

  • image of S Z. Project 19973552 has been deleted $150.00 AUD

    “On time and ultra responsive! Very happy!”

  • image of Waqas A. Hadoop and python experts $130.00 USD

    “good person, did things perfectly”

  • image of Sathik K. Need Python Developers for quick Analytics script $60.00 USD

    “Done good work and deliver it on time.”

  • image of Maria P. Project 19918930 has been deleted €150.00 EUR

    “She's a real professional expert and tutor with programming R and Python, software architecture, machine learning, statistics. Great with clear communication, quick results, and deep knowledge. Highly recommended.”

  • image of Klara I. Project 19905487 has been deleted €50.00 EUR

    “perfect job. Also deliver on time. She is really good with python”


OCR,Regular Regressions,Al,ImageProcessing

Feb 2019 - Feb 2019 (1 month)

All aspects of Machine Learning and Ocr using Python.

Powerful-Personal Mail checking Program

Feb 2019 - Feb 2019 (1 month)

using selenium webdriber and validate email packages and connect the powerful mail checking websites,design powerful python Gui interface,I can check the personal email safely and correctly.

Web Scrapping App

Jan 2019 - Feb 2019 (1 month)

Using selenium webdriver and beautiful soup,multi thread,python recatpcha function,it can scrape data and save into database and summerise the result.

Python Data Mining

Jan 2019 - Jan 2019 (1 month)

Using python pandas and scipy and numpy,compute Gower distance similarity coefficient of all variables.


Professional Education for mathematics and Computer science

2006 - 2011 (5 years)