Profile image of jangjinmei728
Flag of China Dandong, China
Member since July 28, 2017
3 Recommendations


Online Offline
I have been developed many parts of software for over 11 years. Major areas of my expertise include: ✅ Mobile App development (iPhone, Android, Hybrid, Unity3D, Cocos, ...) ✅ Web development (PHP, Python, NodeJS, AngularJS, Wordpress, Shopify, Laravel, AWS, Heroku) ✅ Desktop Application (C/C++, C#, Java, QT, ...) ✅ Database (Firebase, MySQL, MS SQL, Oracle, SQLite, ...) I always aim to maintain a long-term relationship with my clients. Whether you've lost your original developer, need additional resources, or want a brand new app, I can step in and take over wherever you need. For now, I am a manager of a team that has 5 full stack mobile&web developers. We guarantee clients high-quality code and fast speed. We also provide free maintenance 6 months after finishing the project. Please kindly touch us here and get success from there! Thank you for reading.
$30 USD/hr
62 reviews
  • 100%Jobs Completed
  • 100%On Budget
  • 100%On Time
  • 19%Repeat Hire Rate


Recent Reviews

  • image of abdirashidmohamm Build Android mobile app $500.00 USD

    “Very professional Finished the project very quickly. Highly recommended freelancer. Will definitely work with him again.”

  • image of ymhossein I want an android app with firebase backend $150.00 USD

    “At first I was a bit nervous on whether the person I award will satisfy and fullfill my requirements or not (as I had a bad experience with a developer team), but then with one day sooner than the expected date he delivered the app as how I wished and wanted. He spent time in knowing exactly what I wanted before starting the project and asking for milestone, excellent service,extremely polite, solved issues quickly and accepted the project with a very economical price. I will definitely next time chose him.”

  • image of tomwalters01 Create a ios and android app $1659.50 AUD

    “Great Freelancer! Fast and good communication. Will hire again”

  • image of snapu Another Project for @jangjinmei728 IOS Development $933.00 USD

    “I have been working with him for about a month and his work is always on time and on target. Quality is excellent. Very trustworthy and will be sending more projects to him. He is amazing. Thanks”

  • image of ziom9 Convert xcode to android app $200.00 CAD

    “I paid an extra amount but he got it done perfectly ! Very hard working ! He worked day and night to get this to work”

  • image of falcaobrunno Upload iOs App R$466.00 BRL

    “He is fast and available! Nice and easy to work with him”


Senior Mobile and Web developer

Mar 2010 - Jun 2017 (7 years)

I have deleloped mobile and web in this company for 7 years. Since 2014, I was a leader of mobile solution team and made a lot of websites&mobile production using different framework in various platform. Since July 2017, I became a full time freelancer.


Bachelor of Computer engineering

2006 - 2010 (4 years)


C++ Fundamentals (2010)




A new edge detection algorithm for flame image processing

Digital image processing is playing an increasingly important part in imaging based flame monitoring systems. A crucial step in flame image processing is to detect the flame edge, a dividing boundary between the area where there is thermo- chemical reaction and those without. The determination of flame edges is a precursor to flame image processing and measurement of flame parameters.


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