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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, 122 json projects are completed every quarter on Upwork.

122

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 4.67.

4.67
Last updated: September 1, 2015
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  1. Adrian Janek

    Adrian Janek

    Experienced Web/Mobile Guru

    Poland - Tests: 9

    I am a senior Web/Mobile developer who has 6 years of experience in this field. My aim is to set up your business, structure it, bring to life and make successful. Later to expand it and bring to an entirely new level of performance. I generate new fresh ideas and implement them, design the concepts, system, interface and plan the process flow. Based on the business needs, to gain the best quality and performance, incredible user experience and full customer satisfaction. About my skill set: 1) Web Development - from scratch development; - CMS based; - Framework based; Symphony 2, Zend Framework, CakePHP, Yii, Codeigniter, Joomla, WordPress, Drupal, Magento, Prestashop, Opencart, SalesForce using: HTML/HTML5, XHTML, Javascript, AJAX, jQuery, ExtJs, Bootstrap, CSS2/CSS3 PHP, Perl, Python Oracle, MySQL, MariaDB, MongoDB, MSSQL Ruby on Rails. 2) Mobile development - iOS, Android (Objective-C, Swift, Java, C/C++) - PhoneGap, Titanium, Xamarin, (HTML5, jQuery Mobile, C#) - Cloud backend: Parse, Parse REST, Amazon, Firebase - Video/Audio/Image processing: OpenCV, GPU Image, CoreAudio - MySQL, SQLite, Oracle, SQL Server - Instagram, Youtube, Pinterest, Vimeo - Google Map, Foursquare, Geolocation, GPS, Open Street Maps - Cocos2D, Box2D, Unity3D, OpenGL, Corona - Game Center, In-App Purchase, RPG server - iAd, AdMob, ChartBoost, MoPub, Tapjoy, Flurry - JIRA, RedMine, BaseCamp, Github, BitBucket, SVN - Cloud services: iCloud, Salesforce, AWS, EC2, Dropbox I will do my best to give you the best satisfaction. Thank you, Adrian

    $35.00 /hr
    206 hours
    5.00
  2. Maks G.

    Maks G.

    Senior Java Developer

    Ukraine - Portfolio: 6

    Java, OOP, J2SE, J2EE, Spring MVC, Spring Security, Spring Data, Maven, Tomcat, Hibernate framework, Servlet/JSP, Freemarker, Thymeleaf, JDBC, Javascript, JQuery, Ajax, Knockout.js, Web-Services, Oracle, PostgreSQL, My SQL An experienced software developer with experience in designing and developing innovative solutions using Java. Excellent analytical, design and problem solving abilities. Extremely motivated and committed to delivering the highest standard of work. My CV: http://www.toptal.com/resume/maksym-goroshkevych My LinkedIn profile: https://www.linkedin.com/in/goroshkevych/en

    $30.00 /hr
    1,224 hours
    5.00
  3. Mitton Pienaar

    Mitton Pienaar

    Software Developer

    South Africa - Tests: 4 - Portfolio: 3

    I am a talented software developer with an IT Management background. I am an analytical thinker with the ability to address a wide variety of business and engineering challenges using appropriate Information Technology. I am passionate about cloud computing and the changes it is likely to bring in the Information Systems industries.

    $34.00 /hr
    18 hours
    5.00
  4. Ben M.

    Ben M.

    Sr. iOS/Android Mobile Developer

    Australia - Tests: 5 - Portfolio: 3

    Hi, I am the Senior iOS/Android developer with rich experience from enterprise to small level mobile app development. I am well versed in Objective-C, Swift, Java, as well as working with Xcode and Eclipse - Over 8 years of experience in software engineering - Have extensive experience in iPhone/iPad application/game using objective-c and swift - Have extensive experience in Android/Tablet application/game using Java - Expert in GIT/BitBucket/Jira - Extensive work in Web service development using ASP.NET, PHP, SOAP, Ajax, Jquery, JSON - Extensive work experience in e-Commerce website development and financial API development including Xero, BigCommerce - Have been excellent team member - Self-starter for finding technical solutions

    $45.00 /hr
    77 hours
    5.00
  5. Zheng Wei

    Zheng Wei

    HTML5|Phonegap|AngularJs|Ionic|PHP|CodeIgniter

    China - Tests: 1 - Portfolio: 18

    I have solid experience with web and mobile development. I can provide High Technology, High Speed, High Quality. - Technology : WordPress, Magento, Codeigniter, Kohana, CakePHP, Zend, PHPFOX, Laravel, Joomla, Drupal, OsCommerce, vBulletin, RubyOnRails, ... HTML5, CSS3, Javascript, JQuery, XML, JSON, LESS, Angular.js, Ionic, JQuery-mobile, Kendo UI, Sencha-Touch, Zepto, Bootstrap, Create.js, Fabric.js, Raphael.js, ImpactJs, html5-cocos2d, lime.js, three.js, Node.js, Socket.io, MongoDB, ... Iphone, Android, Phonegap, Cocos2d, Box2d,Unity-3D, ... Facebook, Twitter, LinkedIn, Googlemap, .. PHP, JSP, Objective-C, Java, J2ME, C#, C++, Online game, Web service, Image processing, Sound processing, Graphics Design, ... Full time working are available. ( 10 ~ 12 hours per day, 60+ hours per week. ) Best Regards, Zheng.

    $45.00 /hr
    4,491 hours
    4.81
  6. Tyler M.

    Tyler M.

    Full-stack Web Developer (MEAN)

    United States - Tests: 2

    First, I'm a problem-solver in every sense of the term and my job descriptions have only ever served as the short and succinct answer to the question of what I do for a living. On paper, I might simply be a Software Developer, but in practice, I strive to be much more. Second, I have a deep interest in nearly everything - not an exaggeration. I believe that this varied interest gives me a unique and insightful perspective that a lot of people perhaps lack. I have an interest in understanding the vision - that is, the big picture of any given problem and this makes it much easier for me to work towards solutions that are not only quicker (by way of eliminating unnecessary work) but also smarter and more enduring. Lastly, I am driven by a desire to be the best. This doesn't always pan out but the desire remains, none-the-less, to be the best at whatever I am working on. I like to own the job at task and I like to treat every experience as a chance to become an 'expert' at something new. Skills/Highlights: JavaScript, MongoDB, Express, Angular, Node, JSON, REST, HTML5, CSS3, Less, Sass, Bootstrap, and Material Design

    $50.00 /hr
    19 hours
    5.00
  7. DF-Studio LLC

    DF-Studio LLC Agency Contractor

    Account Manager at DF-Studio

    Ukraine - Tests: 2 - Portfolio: 2

    DF-Studio is a team of professionals from Ukraine. "Websites are born here!" - that is our slogan. While ordering a service at our studio, you can retrace every single stage of web-development: starting from tracking the thought-flow and idea generation, going through the stage of its gradual practical implementation, and finishing with the observation of visible and comprehensive results. We permanently strive to perfect our skills every day, adjusting our current skills and knowledge to the cutting-edge requirements of current market. The core services provided by the company are as follows, but are not limited to website development from the scratch; programming in pure PHP or involving the following PHP frameworks: Yii, ZF, CakePHP, Symfony, Kohana ; using our own CMS ; in technologies we can mark PHP (4,5), HTML(4,5), CSS(2,3), JavaScript (jQuery, ExtJS), MySQL, Ajax, JSON, XML, Git/SVN, decent competence in OOP.

    Associated with: DF-Studio

    $16.00 /hr
    30 hours
    3.15
  8. Eric C.

    Eric C.

    D3 Data Visualization Expert

    United States - Tests: 1 - Portfolio: 5

    I have 15 years of experience developing interactive web-based platforms and my extensive academic work has focused on data visualization and interface design. An expert in all things HTML5, I specialize in using D3.js to develop engaging, interactive experiences. My work history includes creating rich web applications and visualizations for Fortune 500 corporations (Ernst & Young, Abbott Labs) and world renowned universities (Case Western, Boston Univ, Tufts). My academic degree's have focused on usability and data visualization, having passed PhD qualifying exams in human computer interaction and algorithms. Whether you know exactly the type of visualization you want or just have an idea and need some guidance, clients can rest assured that I will work with them every step of the way to turn their idea into a polished product.

    $80.00 /hr
    12 hours
    0.00
  9. Andreas Braun

    Andreas Braun

    Senior Developer in Frontend / Ruby on Rails / WordPress / MVC

    Germany - Tests: 11 - Portfolio: 7

    Hi, I am a senior web developer with 10+ years experience. I have developed a wide range of websites. I am always trying to deliver high quality solutions before deadline. I have strong skills and good experience in the following areas. - Ruby - Ruby on Rails Refinery CMS, Spree RSpec,Cucumber,TDD,BDD Various Ruby Gems, - PHP ( OOP ) MVC : Symfony, Laravel, CodeIgniter, Zend CMS : WordPress ( Theme development & customization, Plugin modification ) - Front-End: HTML/CSS, Twitter Bootstrap, Foundation JavaScript, Ajax, Coffeescript, HAML, - JS Framework: AngularJS, D3JS, NodeJS, EmberJS - Database: SQLite, MySQL, PostgreSQL, MongoDB I am looking forward to work with you!! Thanks for your time and consideration.

    $40.00 /hr
    45 hours
    4.91