json Freelancers

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json Job Cost Overview

Typical total cost of Upwork json projects based on completed and fixed-price jobs.

Upwork json Jobs Completed Quarterly

On average, 127 json projects are completed every quarter on Upwork.

127

Time to Complete Upwork json Jobs

Time needed to complete a json project on Upwork.

Average json Freelancer Feedback Score

json Upwork freelancers typically receive a client rating of 4.64.

4.64
Last updated: June 1, 2015
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  1. Csaba Toth

    Csaba Toth

    High-Skilled Mobile Developer for IOS & Android

    Hungary - Last active: 8 hours ago - Tests: 9 - Portfolio: 11

    Hello *****Best Quality and Fast Speed******* I am Csaba Toth, a talented Mobile application developer. I have a good experience of Mobile application and games. Also, I have developed a lot of Desktop applications and web development. Mobile device platform: - iPhone 6 plus, iPhone 6, iPhone 5s, iPhone5, iPhone4s - iPad Air, iPad4, iPad3, iPad mini - Google Nexus 5, Samsung Galaxy S5, S4, S3, HTC One My skill-set: - Native: iOS, Android, Windows8 (Objective-C, Swift, Java, C#), JNI, NDK (C/C++) - Hybrid: PhoneGap, Xamarin, Titanium (HTML5, jQuery Mobile, C#) - Web service: XML/JSON, REST/SOAP - Cloud backend: Parse.com, Parse SDK, Parse REST, Parse Cloud Code, Amazon S3 EC2 AWS, Firebase, Twillio, Plivio - Chat & Messaging Engine: XMPP, Jabber, OpenFire, OpenTok WebRTC, Ejabberd, Erlang - Video/audio/image processing: OpenCV, GPU Image, CoreAudio, EZAudio, Pitch Control, Bass, AVFoundation - Video/audio streaming, codec: Wowza, Red5, H.323, MPEG-4 - VOIP, Cloud Communication: Twillio, Heroku, Tokbox - HTML5, PHP, ASP, JSP, C# and their frameworks - MySQL, SQLite, Oracle, SQL Server, ODBC - Facebook, Twitter, Linkedin, Instagram, Dropbox, Youtube, Pinterest, Vimeo - Google Map, Foursquare, Geolocation, GPS, Open Street Maps - Cocos2D, OpenGL, Corona, Unity3D, Box2D - Game Center, In-App Purchase, RPG server - iAd, Adwirl, Revmob, Admob, Chartboost, Tapjoy, Flurry, Testflight - Cloud services: Parse.com, iCloud, Rackspace, Zoho CRM, Salesforce, Azure, AWS, EC2, Dropbox

    Groups: Application Developers Alliance

    $44.44 /hr
    288 hours
    4.80
  2. Vitaly Sas

    Vitaly Sas

    Expert Android developer

    Belarus - Last active: 5 days ago - Tests: 3 - Portfolio: 3

    I specialize in developing Android apps and have over 4 years of experience in commercial app development. I'm looking for a interesting projects to do a really good job. Challenge me and I'll do my best to create high-quality app in order to meet your wishes. I look forward to working with you. Thank you for reviewing my oDesk resume. Best regards, Vitaly Sas.

    $33.33 /hr
    1,375 hours
    4.90
  3. David B.

    David B.

    Senior Mobile App (iOS/Android) & Server Back-end Developer

    Netherlands - Last active: 1 day ago - Tests: 17 - Portfolio: 16

    *** Your Journey into Native Mobile App Development (iOS/Android) starts with me *** Full-Stack Native Mobile Apps & Web Services Expert Full Time support(40~60 hrs/week), Daily progress report & Skype live chat Long-term relationship contract & Money-back guarantee *** iOS/Android Application Development *** - iOS Native (XCode): Objective-C, Swift, Cocoa Touch, iOS7 & iOS8 Kitkat - Android Native (Studio/Eclipse): Java - Hybrid Apps: Phonegap by Ionic (Angular JS), Cordova SDKs, JQM, Kendo UI - Xamarin (.NET) - Mobile Games: Cocos2D, Cocos2DX, Unity3D, Board SDK *** Mobile Application Services Support *** - Analytics and Testing : Google Analytics, Apptentive, Flurry, KIF testing framework - Back-End: JSON-RESTful APIs built on PHP MVC Frameworks for CRUD as well as 3rd Party SDK integration like Parse, Twillio - Services: Cloud, iBeacon, FB, Twitter, LinkedIn, Twitter, Google, Audio/Video (Wowza) Streaming *** Web Services Support *** - Main Tools: PHP, MYSQL, HTML5, DHTML, JQuery, CSS3 (Bootstrap & Responsive & Parallax) - JS Templates: AngularJS(Ionic), BackboneJS, NodeJS(XMPP), RequireJS - Common Templates: WP, Joomla and PHP MVC frameworks : CodeIgniter, Laravel, CakePHP, Yii and Kohana - Ecommerce: Magento, OpenCart, WooCommerce, Shopify and Prestashop I work as individual, supporting full time. I'm here to analyze your ideas and requirements and offer our vision of project realization. Rough quote will be ready within 48h. If it is acceptable for you, I'll prepare detailed project development plan indicating timeline and budget. I always make sure to bring you upon successive results of highly and creatively qualified results before your deadline and guarantees refunding for any unsuccessful results or issues which are responsible for me. I am seeking an opportunity to become a business partner with long-term relationship forever.

    Groups: Application Developers Alliance

    $70.00 /hr
    503 hours
    5.00
  4. Peter R.

    Peter R.

    Senior iOS Developer

    Romania - Last active: 1 day ago - Tests: 7 - Portfolio: 7

    Thank you for viewing my profile! I am a professional iOS developer with over 5 years experience in this field, but worked with other technologies as well in the last decade. Since developing apps for the iPhone and iPad I had the pleasure of both working in a large company, but also as a successful freelancer on small and medium size projects. I am new to oDesk, so far I have been working on other freelancer websites. You can see some reviews of my previous work on the following link: https://www.elance.com/s/p_r_861027/job-history/?t=1. My portfolio lists only a handful of apps I've had the chance to work on. I'm looking for clients that are seeking experience and quality in iOS development. I took 2nd place in the iOS Programming Test. Looking forward to working with you!

    $35.00 /hr
    34 hours
    5.00
  5. Viktor Naryshkin

    Viktor Naryshkin

    Windows Phone expert

    Ukraine - Last active: 1 day ago - Tests: 3 - Portfolio: 18

    Tons of successfully developed Windows Phone projects. I'm TOP-rated Windows Phone expert on stackoverflow (http://stackoverflow.com/users/820813/ku6opr) and I'm open for new projects I'm degreed in Computer Science and have 5 years of background in C#., NET , Silverlight, WPF (oDesk verified). I'm interested in Windows Phone, Windows Phone Universal apps that target Windows and Windows Phone and Windows 8 projects If you need a skillful mobile developer, I will be glad to work with you. I'm provide safe outsourcing services, secure processes, and top quality results for your business. Technologies: Windows Phone 8 / 8.1 Windows Store / Windows Phone 8.1 Universal app Windows Store Strongest skills: A deep familiarity with C# and XAML Experience working with push notifications, live tiles and Windows Phone SDKs Experience with third-party libraries and APIs Solid understanding of the full mobile development life cycle

    $33.00 /hr
    469 hours
    4.98
  6. Aleksandr Kondrik

    Aleksandr Kondrik

    Senior iOS Developer

    Russia - Last active: 2 days ago - Tests: 5 - Portfolio: 7

    Hello, With 3+ year of experience in I get expertise in iOS and .Net development. I love develop apps. I like complex and diverse assignments that keep my mind sharp and allow me to constantly learn new things. Have some apps in AppStore: 1) iDrom - mobile client for site www.drom.ru 2) Autoservice 717 - business application for car service

    $33.33 /hr
    231 hours
    5.00
  7. Stefano A.

    Stefano A.

    Senior Mobile App (iOS & Android) Developer

    Portugal - Last active: 1 day ago - Tests: 13 - Portfolio: 11

    Over the last 8 years, I have developed so many iPhone, iPad, Android apps including social networking app, dating app, chat app, shopping app, fitness app, video/photo app, games and etc... I mastered all parts of mobile technologies & skills with lots of experiences. And I have rich experiences in web-backend * web-apis development for mobile apps. I have an extensive knowledge of ObjectiveC/Java/C#/Ionic-AngularJS languages, broad experience in a number of professional products such as mobile apps, cross platforms solutions, embedded systems, networking and multithreading solutions, algorithm development. Mobile device platform: ✔ iPhone 6 plus, iPhone 6, iPhone 5s, iPhone5, iPhone4s ✔ iPad Air, iPad4, iPad3, iPad mini ✔ Google Nexus 5, Samsung Galaxy S5, S4, S3, HTC My skill-set: ✔ Native: iOS, Android (Objective-C, Swift, Java), JNI, NDK (C/C++) ✔ Hybrid: Xamarin (C#), Phonegap Cordova(Ionic, AngularJS) ✔ Web service: XML/JSON, REST/SOAP ✔ Web development: PHP MVC frameworks, MySQL, CodeIgniter ✔ Cloud backend: Parse, Amazon, Firebase, Foodie, Twillio, Plivio ✔ iAd, Adwirl, Revmob, Admob, Chartboost, Tapjoy, Flurry, Testflight ✔ Facebook, Twitter, Linkedin, Instagram, Youtube, Pinterest, Vimeo ✔ Google Map, Foursquare, Geolocation, GPS, Open Street Maps ✔ Chat & Messaging Engine: XMPP, OpenTok ✔ Video/audio/image processing: OpenCV, Pitch Control ✔ Cloud Communication: Twillio, Tokbox ✔ Speech recognition, text-to-speech, Siri, OpenEar ✔ MySQL, SQLite, Oracle, SQL Server, ODBC ✔ In-App Purchase ✔ JIRA, Github, BitBucket, SVN, GitLab ✔ Cloud services: iCloud, AWS, EC2, Dropbox ✔ Online Payment Gateway: PayPal, Stripe, Braintree I’m looking for long-term business relationships with customers.

    $66.67 /hr
    116 hours
    5.00
  8. Bruno Marek

    Bruno Marek

    Senior Mobile(iOS&Android) Developer with Best Web experience

    Czech Republic - Last active: 1 day ago - Tests: 11 - Portfolio: 11

    I've been a senior mobile app developer in the mobile space for 7 years with a proven track record of completing projects on time and exceeding client expectations. During this course, I was responsible for bringing several high profile apps and Web site on the market. I'm here to bring your ideas and vision to mobile, web market with success and I have lots of experiences in software building from scratch. I also have some experience in the following areas; 1) Mobile (iOS/Android) - Social network application ( Chat, Dating, Instagram, Facebook, Twitter integration ) - Push Notification( APNS, GCM ) - Google Map, Geo-location, Barcode/QR Code scan - Business application - Backend web service, REST API+ 2) Web - Javascript, jQuery, KendoUI, DHTMLX, Html5 - CMS: Wordpress, Joomla - eCommerce: Magento, Shopify, PrestaShop - MVC: Codeigniter, CakePHP, Laravel, Zend - CVS: Git, SVN I am always trying to give the good quality and high speed to my clients. Do you want to save your money and time? Contact me. I can give the best result to you. Don't hesitate to get in touch if you have questions!!! Regards, Bruno

    Groups: Pro Web Designers

    $42.00 /hr
    92 hours
    5.00
  9. Anton Myagotin

    Anton Myagotin

    Scientific programming

    Russia - Last active: 28 days ago

    Anton Myagotin was born on 27 September 1979 in Khabarovsk (Russia). He received the Dipl. Ing. degree in electrical engineer-ing in 2002 from the Khabarovsk State Technical University (Russia). He received the master degree in computer science in 2003 from the Saarbrücken University (Germany). From 2003 to 2006, he was a PhD student at Saarbrücken University (Germany). From 2006 to 2008, he was a lecturer in the Russian-German Institute of Computer Science at the Pacific State University (Russia). He received the PhD degree in the field of informational, measuring and control systems in 2011 from Institute of Mechanical Engineering Problems (Russian Academy of Science). Now, he is a dean of foreign student educational programs at the Saint-Petersburg State University of Civil Aviation. His research interests include signal and image processing, foam physics and parallel reconstruction algorithms.

    $38.00 /hr
    1 hours
    4.98
  10. Yuri Cheryshev

    Yuri Cheryshev

    iOS/Android/Web/Parse/AWS Expert

    Russia - Last active: 8 hours ago - Tests: 5 - Portfolio: 6

    Over the last 5 years, I have developed a wide range of mobile apps for both mobile and web platforms including small projects for startup companies and big projects for rising businesses. My core competency lies in all kind of services needed in mobile app and web development including design and wireframing and publishing, and I am seeking long term relationship for successful projects. I'm available full time for the work including the weekend. You can expect highly responsive service. My experiences & skills : ★ iOS programming (iOS 6.0 and above) ★ Android programming (Android 2.1 ~ Android 5.0 ) ★ Photo and camera app for mobile. ★ Database management with SQLite, MySQL. ★ Google Map, GPS, GEO location Service. ★ Integrate REST API, JSON/XML parsing ★ Push notification. ★ Design UI/UX and custom UI component for Android ★ Barcode and QR code Reader. ★ Emoji Application ★ Integrating Social Network (Facebook, Twitter, Instagram, Google+, Flickr) ★ In-app purchase, iAd, Admob, Revmob, BeachFront, Chartboot ★ Integrating Analyse tool in App (Flurry, Google Analytics) ★ Integrating Tracking crashes tool in App (Crashlytics) ★ Delivery binary for App with TestFlight App. ★ Source code management for GitHub, Mercurial, Bitbucket ★ Submit App to Google Play and AppStore. ★ Web development based on PHP, ASP.NET, Javascript, Jquery ★ Web Framework including Laravel, Codeigniter, CakePHP ★ Wordpress, Joomla, Drupal, Magento

    $50.00 /hr
    0 hours
    5.00