Profile image of goldsea808
Flag of China Yanbianchaoxianzu Zizhizhou, China
Member since November 1, 2016
6 Recommendations


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I am a software engineer with a B.S. in Computer Science and ten years of professional experience in building web and mobile applications. I am skilled in all aspects of the full software development cycle, from requirements gathering and planning through development, release, and maintenance. In other words, I can do everything you need to build your app from scratch and get it on the market. I can typically dedicated between 40 hours a week to a client depending on the needs of the project. SERVICES: *Full-cycle mobile application engineering --Cross-platform development for iOS and Android --Design of interface and graphics (if required), with mockups --Development of clean, efficient code, customized to your application's needs --Responsive user interface code that looks good and works well on any screen size/aspect --Communicate with client on development progress and milestone completion, including providing testable builds to the client as work progresses
$30 USD/hr
84 reviews
  • 95%Jobs Completed
  • 90%On Budget
  • 94%On Time
  • 15%Repeat Hire Rate


Recent Reviews

  • image of Arnaud R. Android studio, Ionic & Unity €350.00 EUR

    “Very good job, we had a very efficient support”

  • image of Developer A. Project for Hailong J. €200.00 EUR

    “this is a awesome freelancer, he knows a lot about 3D projects and is always avaialbe. He could help us on time with the project, we will defently hire him again on our next project.”

  • image of Kyeong Min L. Designing game levels. $1200.00 USD

    “He is very professional, punctual, and quick of communication. I am satisfied with his work.”

  • image of Clayton D. Modify windows (c++) source for a high performance windows Event Log to Syslog agent $1010.00 USD

    “Hailong did a great job with what he was able to. Some of the things we asked for were just not possible - we learned later that the code we asked him to fix was very outdated and needed to be rewritten, but this was not his fault. He did have some trouble with understanding syslog, but was able to overcome it. In all, he did not give up and did deliver what he could, so we are happy with him.”

  • image of Allan J. Project for Hailong J. $150.00 USD

    “Very good programmer!”

  • image of Sunny A. Parser implementation2. $80.00 USD

    “good job!!”


AR | VR Contents developer

Jan 2016 - Jun 2017 (1 year)

This company was focused in AR|VR contents development.

Mobile Engineer

Dec 2014 - Dec 2015 (1 year)

This is US company. The company is focusing on High quality products. I'm a leader developer there.

Xamarin Leader Developer

Jan 2014 - Nov 2014 (10 months)

This is Denmark software company. I built the Software for them as Xamarin.


Master of Computer Applications, Computer engineering

2007 - 2011 (4 years)


Appcelerator Titanium Certified Application Developer (2014)

Titanium Certification

Tsinghua University

Top Virtual Reality Software Builders Award (2016) (2016)

BeiJing Culture & Education Department

Winner in AR/VR Stage, ShangHai Information Tech Event in 2016.



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  • Android 1
  • iPhone Development 1
  • US English Level 1
  • PHP Level 1
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