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I have a passion for taking the web and making it mobile. Over last 6 years I got mobile development experience in a broad range of industries, including social gaming, education, sports entertainment, dating, restaurant management and rental solutions. I have solid understanding of full mobile and software development life cycles, UIX, web analytics, changing web standards, and Agile methodologies. Dedicated to continuously developing, implementing, and adopting new technologies to maximize development efficiency and produce innovative applications. [login to view URL] app development using Xcode/Objective-C & Swift, [login to view URL] app development using Android Studio & Eclipse/Java, [login to view URL] development(front end, back end) using HTML5/CSS3, AngularJS, ReactJS, Meteor, Backbone.js, [login to view URL], Ember.js, Node.js, Ruby on Rails, Django, with languages such as PHP, Ruby, JavaScript, etc. 4.Cross-platform development using Xamarin and hybrid frameworks including PhoneGap/Cordova, Titanium Alloy, etc. Thanks
$50 USD/hr
  • 100%完工率
  • 99%预算內
  • 89%准时性
  • 17%重雇率



  • robsongoncalves3的图片 Driver to run a dll $100.00 USD

    “great freelancer!”

  • noskcaja的图片 XSLT for transformation of XML files $235.00 AUD

    “Excellent work & highly recommended. I'd have no hesitation in working with Valentin again.”

  • brayden22wilmoth的图片 Angular 5 SASS Assistance $176.00 USD

    “Valentin was a great guy and always had an open line of communication for us to discuss the project. Would highly recommend both him and his work.”

  • aungthura78的图片 Project for Valentin J. $1890.00 USD

    “In all regards a good experience to work with Valentin. He is diligent, hard working and easily understands what client wants. Highly recommended”

  • Tu T.的图片 SaaS Web Application that syncs with api server $200.00 USD


  • Nari Y.的图片 Project for Valentin J. $100.00 USD

    “Valentin was delivered correct result as fast so I am really satisfied about this. I will hire him again soon. Thank you”


Mobile applications and Web Developer / Project Manager / Service Provider

Sep 2008 - May 2016 (7 years)

I've developed so many mobile applications and websites in this company. Also I've managed several big projects.


Master of Computer Applications (M.C.A.)

2004 - 2008 (4 years)


  • Preferred Freelancer Program SLA
  • US English Level 1
  • WordPress
  • PHP Level 1


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