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. 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

    $77.78 /hr
    599 hours
    5.00
  2. Johanne Hansen

    Johanne Hansen

    iOS & Social & XMPP Professional

    Norway - Last active: 12 days ago - Tests: 9 - Portfolio: 1

    " Quality Service within deadline " I've got more than 9 years in IT. I've learned professional education and have got plenty experience. Especially I'm an expert in iOS development, social platforms' api, XMPP and WebRTC. My key skills and abilities include + iOS programming languages (X-code, Swift, Objective-C) + iOS SDK (Foundation, UIKit, Core Data,AVFoundation, MoviePlayer,Quartz Core,Core Animation, etc) + Various social platform and their api including Facebook, instagram, twitter, etc. + Text messaging and video/voice chatting - XMPP, OpenTok, Pusher, APN + Networking framework - AFNetworking, Web RTC, Socket.io TCP/IP + Map integration(GPS Location) / Google Map API, MapKit Framework + e-Commerce payment system - Paypal, Authorize.net, Stripe, Saleforce, card.io + ad serving or ad network SDKs (iAds, Google admob, etc) + Web service develop and integrating - JSON RESTful API, Parse.com, Node.js, Ruby, Mean + Various library development using C/C++ + Team Work - SVN, GitHub, Bitbucket

    $50.00 /hr
    10 hours
    5.00
  3. Ferenc Knebl

    Ferenc Knebl

    Senior Mobile Developer for iOS and Android

    Hungary - Last active: 1 day ago - Tests: 9 - Portfolio: 10

    When I am really happy? I love to hear: "You are doing a great job!" Over the last 10 years, I have been working in IT fields. I got very systematical knowledge and skills of producing software products throughout the analysis of requirements, system design, database schema design, construction of code, deploying and testing. Since 2010 I have started the iOS programming and become very familiar about its development. I am able to work for Android mobile app development as well. So now I am very confident to work with potential clients with various mobile app specifications. I will do the best of my abilities and knowledge to build the apps for them. I love to skate where the puck is going to be, not where it has been. Followings are my major skill sets: ✇ Mobile app & game development ➢ PhoneGap : Cordova, Ionic, Jquery Mobile & Angular Mobile UI ➢ Social Networking, Entertainment, Lifestyle, Education, Business Apps ➢ Google Map, Foursquare, Geolocation, GPS, Open Street Maps ➢ Parse.com, JSONKit, RESTKit, TestFlight, AFNetworking ➢ ApplePay, Stripe, Authorize.Net, Paypal, SagePay,WePAY ➢ XMPP, QuickBox, VSee, OpenTok, Skype, WebRTC ➢ Cocos-2D, Box2D, 2D-x, Unity 3D, Admob, Revmob, Chartboost, Flurry ➢ Push notification(iPhone/Android), Local Notification on Mobile app
 ➢ Facebook, Twitter, Linkedin, Instagram, Youtube, Pinterest, Vimeo ➢ Barcode, QR scanner (iPhone/Android)
 ✇ Web Development ➢ CarrierWave, Kaminari, HAML, SASS, Jammit ➢ Laravel, Symfony2, CodeIgniter, Yii, Zend ➢ Parse.com, Windows Azure, Amazon Web services, Heroku ➢ BackboneJS, AngularJS, EmberJS Best Regards. Ferenc.

    $40.00 /hr
    47 hours
    5.00
  4. Alexander Pronin

    Alexander Pronin Agency Contractor

    Expert in Mobile Application Development and Project Management

    Ukraine - Last active: 1 day ago - Tests: 4 - Portfolio: 12

    Region IT company is the team of professionals whose passion is mobile applications. We are experts in Android and iOS apps development and UI design. This is what distinguishes us from others: R — reliability and privacy. E — experience (more then 15 projects during 2 years). G — goal of an project that is common with our partner. I — intelligent managers. O — opportunity of work in terms of fixed price, T&M projects and outstaffing. N — nice rates. I — innovative vision in a work. T — talented team of skilled specialists. We would like to offer you a collaboration on: • Android application development; • iOS application development; • testing of web and mobile applications; • design and UI/UX development; • .NET development.

    Associated with: Region IT

    $18.00 /hr
    341 hours
    5.00
  5. Anton P.

    Anton P.

    Senior PHP developer

    Ukraine - Last active: 11 days ago

    More than 7 years in Web Development, Mostly specialized on back-end and high load, but also good at front-end! System administrator in the past I am able to set up and manage any complex server-side solutions, development enviroments and deployment process.

    $25.00 /hr
    927 hours
    5.00
  6. Shadab Hussain

    Shadab Hussain

    Expert Java Developer

    Pakistan - Last active: 3 months ago - Tests: 1 - Portfolio: 8

    Experienced Software developer with skills Java,XML, C#, Android and C++. I have over 3 years of web development experience in JavaEE, ASP.NET and PHP platforms with different databases SQL Server, Apache Mysql, Oracle and Derby. • Strong OOP and Software engineering concepts. • Very Good Knowledge of Java SE & JSF, JSPs and Servlets • Basic knowledge of Spring Framework • Excellent at application programming in Java and data structures • Have developed Software application following whole life cycle i.e. from requirement gathering to implementation phase keeping agile development practices in mind. • Very good understanding of databases and database modeling • Extensive knowledge of data structures and have implemented myself • Can Model classes from specification and very good at Project Documentation • Very good knowledge of XQuery and SQL • Very good experience of working with RSS and Media RSS • Worked with relational as well as NoSQL Databases • Developing Electronic Medical Record System (Medical Drop Box) according to standards of HL7 as my Final Year project of undergraduate degree. • Excellent communication skills in English both oral and written.

    $22.22 /hr
    5 hours
    4.97
  7. Stanislav K.

    Stanislav K.

    Database expert with PHP and Delphi experience

    Russia - Last active: 10/17/2014 - Tests: 2

    Hi, My name is Stanislav. In my portfolio, there are few of the programs that I've developed. I proud of my Creativeness and Punctuality. I'm free programmer since 2001(Delphi). At the same time, I've bee developing databases (MSSQL and MySQL) and backends/parsers (PHP) for last 5 years. Listed below are my experience and skills. — MSSQL and MySQL (over 1Tb); — PHP; — Delphi; — Core web: XML, JSON, HTML/CSS, JavaScript; — IDE: Eclipse, NetBeans; — Bug/Issue trackers: Mantis, Redmine;

    $10.00 /hr
    0 hours
    5.00
  8. Lorie-Ju Basilio

    Lorie-Ju Basilio

    Freelance Web Designer and Hosting Handler

    Philippines - Last active: 10/03/2014 - Tests: 3 - Portfolio: 2

    I can do mock-up website (Photoshop to HTML). I know (HTML5, CSS, JQUERY and AJAX). I can also maintain web hosting (FTP). I'm a twitter bootstrap user that can make responsive and easy to load websites. I'm easy to contact and accepts feedback. You can also refer this as my website experience (www.noahsarkbuilders.host56.com)

    $3.99 /hr
    29 hours
    4.60