Profile image of sunnysmile911
@sunnysmile911
Flag of China Shenyang, China
Member since September 5, 2014
15 Recommendations

sunnysmile911

Online Offline
Top Level Developer with highest quality and fast communication on Mobile(iPhone, Android, Balckberry and Windows phone) Web and PC Application Area. I am professional software engineer with over 8 years rich experience in various fields of software development, especially all Mobile project, Image and Video Processing engines, Online Game engines, Desktop Projects and Websites for big commercial companies since 2005. I studied software at Beijing University of Technology for 4 years. I graduated from university in 2007 and I got Software Engineer Diploma. When I studied at university I made several Desktop applications and after graduated university, since 2007, I‘ve been creating high quality and excellent mobile applications and Web sites for the last 6 years. While making mobile applications and web sites for over 6 years I have got various high mobile development techniques, rich experience and in depth understanding of mobile field. For the last 6 years I’ve created large of apps for big companies an individual customers in mainly US, UK, Canada, Australia, Denmark, China and Japan. And no matter anywhere you are in the world, and no problem for communication because my English is native and I am always using phone, Skype and Email for communications with all my employers. My skills and experiences are following: -Social networking, SDK -Cocos2D -Photo processing, filtering and effect, Custom Camera using AVFoundation and OpenGL. -Video/Audio Streaming and Processing, Pattern recognition. -OpenGL ES, OpenCV, Animation, Core image, Core Graphics, Core Data, GPUImageFramework -Web services, HTTP, JSON, XML, RSS, SOAP, PHP, HTML, HTML5, Joomla, Wordpress, Codeigniter -GPS & Google Map -SQLite and MySQL database -FaceBook, Twitter, Youtube, Tumbir, Fickr, Instagram, Google plus -Push and local notification, Calenda, Alarm -iAd, Adwirl, Admob, Chartboost, TapJoy, Cerebro, RevMob -Flurry, Testflight, Girhub, SVN Also I promise following things with client : - Highest Quality. - Fast Development speed and keep deadline. - Best Communication everyday.
$40 USD/hr
84 reviews
7.3
  • 98%Jobs Completed
  • 90%On Budget
  • 90%On Time
  • 18%Repeat Hire Rate

Portfolio

Recent Reviews

  • image of shoplancaster Nutrition Tracking Software (70% Completed already) $2000.00 USD

    “We had very high hopes working with Xingjun. Our project was roughly 70% completed before hiring him to finish the work. After he reviewed the current source code and APIs, he was confident he could complete the work in 30 days or less. 3 months later, many missed deadlines, he wasn't able to deliver the project as planned. I understand the lifecycle of development and that certain things can cause delays. However, an additional 60 days is not acceptable. Especially when there is very little communication. What really disappointed us was that after missing multiple deadlines, he stated he was leaving the country for almost 3 weeks without any notice. That is when decided to part ways and find another developer to finalize the project for us. I'm definitely not trying to be harsh with this review. I'm only stating the facts and that our project didn't go as planned. I'm sure he is a great developer and has many good reviews of people praising his work. So, I'm sure he does come through with other projects. Unfortunately, we didn't have a good experience.”

  • image of DerekPT Project for Xingjun H. £529.12 GBP

    “Great service as before, made sure to understand the requirements, made himself available and was able to provide good explanations of the solution. Hope to work with Song again in future :) [22 January, 2018] Great service as before, made sure to understand the requirements, made himself available and was able to provide good explanations of the solution. Hope to work with Song again in future :)”

  • image of svishaksh Fix bugs and updates for existing website $1375.00 USD

    “It was an excellent experience...he is super reliable, dependable and trustworthy. He is very skilled and professional. Definitely on the top of my list.”

  • image of chonderwild Project for Xingjun H. €800.00 EUR

    “Xingjun did really great work and handled a complicated task by iterating over different approaches until arriving at a solution we were both satisfied with. Clean & performant code.”

  • image of DerekPT Python project modification £132.00 GBP

    “Happy with the results, next time I need a Python guru, I'll give him a call :)”

  • image of shootingstar92 Project for Xingjun H. -- 2 $20.00 USD

    “Perfect as always, thank you.”

Experience

Developer

Jan 2013 - Dec 2013 (11 months)

I made several mobile apps in this company

Education

Software Engineer

2008 - 2012 (4 years)

Certifications

  • US English Level 1
    90%
  • Preferred Freelancer Program SLA
    89%

Verifications

  • Facebook Connected
  • Preferred Freelancer
  • Payment Verified
  • Phone Verified
  • Identity Verified
  • Email Verified

My Top Skills

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