json Freelancers

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json Job Cost Overview

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Upwork json Jobs Completed Quarterly

On average, 126 json projects are completed every quarter on Upwork.


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Time needed to complete a json project on Upwork.

Average json Freelancer Feedback Score

json Upwork freelancers typically receive a client rating of 4.65.

Last updated: May 1, 2015
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  1. Matt Vaughn

    Matt Vaughn

    Principal Software Engineer

    United States - Last active: 12/30/2014 - Tests: 1

    I build amazing software...right the first time. Period. I distinguish my process by communicating proactively with my clients and understanding their needs. I deliver what is expected and there are no surprises at the end of the project. I have over 15 years of technical and business experience taking concepts to reality for a variety of industries. As a hands-on developer I deliver high-quality solutions that increase and/or create product revenue immediately using Microsoft technologies like: .NET, ASP.NET, C#, Web API, and SQL Server. I use my creativity and diverse technical skills to build application solutions and frameworks that provide the real solution. I continue to focus on quality so that the end result is an extensible, maintainbable, and performant software solution. My most recent project includes building the backend for a mobile application. The backend includes Web APIs for mobile and web applications. This allows your web UI or mobile developers to focus on usability while I provide the implementation of the entire backend of the system. This includes the API, business logic, and business rule processing - and the implementation of the backend database. I can also provide technical guidance and/or perform the configuration, deployment, and hosting of the application so that it is ready to deliver the solution.

    $52.80 /hr
    0 hours
  2. Oleg Suzanovich

    Oleg Suzanovich Agency Contractor

    Web Developer | PHP | CSS3 | JS | Yii | Wordpress | EXPERT

    Belarus - Last active: 1 month ago - Tests: 3

    Do you need a reliable, hard working, highly professional web-developer with deep knowledge of: PHP - especially OOP, MVC; CodeIgniter, Kohana, CakePHP, Laravel frameworks MySQL, SQLite db WordPress(WooCommerce), Joomla!, Opencart, Drupal Javascript ( jQuery, jQuery UI ), AJAX, JSON APIs (Google Maps, Google Places, Google+, Twtter, Facebook, PayPal etc) numerous libraries and tools, web services, VCS (git, svn), tasks management systems able to -- create fast, reliable and scalable applications, -- work with your *nix server (CLI, SSH), -- tweak Apache configs, -- write beautiful code and figure out any bug that troubles you, -- make code and database design solutions, -- work sole or as a part of a team, communicating efficiently Then contact me.

    Associated with: Bubble

    $20.00 /hr
    0 hours
  3. Maciej Cupial

    Maciej Cupial

    iOS & Mac OS developer

    Germany - Last active: 10/06/2014 - Tests: 1

    My main skills lie in programming for Apple’s iOS. For a long time now I have been developing myself in iOS and expanding my knowledge. I have even started to offer lessons on YouTube (http://www.youtube.com/user/maciejcupial) as well as on my blog (http://cupial.com.pl and http://cupial.eu). New followers join me continuously. Working for Infusion and Harvard Business Review brought me further experience as well as running my own startup, which allowed me to work on my own private projects and develop applications for clients. I managed simple & advanced projects in the area of marketing that were responsible for product sales or product communication. I specialize in Apple’s software environment and continuously raise my qualifications while working on iOS/Mac OS. With this, Xcode (Objective-C) comes to me easily and understandably. I strive to be on-top of Apple’s latest technologies, this is why I am able to use each standard that Apple introduces with ease. Working as an iOS developer I, above all, truly appreciate the ability to develop further. Without a doubt I’m someone who just can’t stand in one place. Being a part of interesting and creative projects motivates me. My strengths include responsibility and punctuality. Whether it is a small or big project, I will always be aware that they are highly important to the client and I work at 110%.

    $45.00 /hr
    0 hours
  4. Ygor Gonzalez

    Ygor Gonzalez

    Software Engineer /.Net Developer

    United States - Last active: 09/24/2014

    Experienced Developer with a proven track record of 15+ years; Recognized as a passionate for technology and hardworking with strengths in decision-making facilitation and problem resolution. Over last 2 years I work on the design and development of multi-tenant Application allowing multiple customers get their own website in one sharing the same application and database. Technical Skills Used: SQL Server 2008, XML, XML Web Services, C#, ASP.net MVC, Ajax, jquery, html5 and css3, cXML (ecommerce XML), Authorize.net (AIM Method) , InfusionSoft API,

    $35.00 /hr
    0 hours
  5. Prabhjeet K.

    Prabhjeet K.

    Android Developer

    India - Last active: 11/12/2014 - Tests: 1

    I have developed many desktop applications using java and many Android Applications using Ecllipse and Android Software Development Kit.My core competency lies in Android development project, and I am looking forward to seek opportunities to build Projects from the square one for you or your business. I also have experience in HTML,C++.

    $33.33 /hr
    0 hours
  6. Joe Wilmoth

    Joe Wilmoth

    Web Developer

    United States - Last active: 09/11/2014

    "A ship in port is safe; but that is not what ships are built for. Sail out to sea and do new things." -Admiral Grace Hopper Software Development is more than typing or mastering algorithms. For me, it's understanding the needs of those around you and molding them into existence. Fun Stuff: Ruby, JavaScript, HTML5, CSS, ServiceNow Development

    $42.00 /hr
    0 hours
  7. Nikos Gyparis Volakis

    Nikos Gyparis Volakis

    Java / Big Data Senior Software Engineer

    United Kingdom - Last active: 08/04/2014 - Tests: 1

    Highly motivated individual with a strong academic background, various skills in Information Technology and Software Engineering as well as a solid understanding of financial and managerial concepts. I was currently working as a lead back end developer and business development officer for a start-up, which I co-founded. During my working experience in Barclays I was committed to deliver solutions by assuming both leadership and participator roles in. Easily adaptable at pressurized and challenging working environments in association with excellent communication and interpersonal skills

    $38.89 /hr
    0 hours
  8. Thulani Shabangu

    Thulani Shabangu

    Software Developer/Webmaster

    United States - Last active: 11/18/2014 - Tests: 1

    Hello, I have trained professionally as a software developer,my expertise lies in PHP, MySQL, HTML, HTML5, CSS, CSS3, jquery-mobile and JavaScript. I can help and work with any web-related projects written in any of the languages above. I love custom projects and long-term commitments. Please find my portfolio here http://webbynovations.com/.

    $45.00 /hr
    0 hours
  9. Serena Rizzo

    Serena Rizzo

    iOS/Android/mobile developer

    Italy - Last active: 10/06/2014 - Tests: 8

    Hello I Have been creating high quality and excellent mobile applications for 5 years. During the period, I acquired many experiences that I use various mobile development frameworks and I became an expert engineer with expertise of the mobile applications. -iPhone/iPod/iPad, Android, Web Service,Ajax,XML,JSON,RSS,SOAP,WSDL -Social Photo/Video/Music App(Video/Audio Streamming,Photo/Video Editing) -MySQL,SQLite,HTML5,PHP,JSP -Facebook,Twitter -Location Based App(Google Map Service,Foursquare) -CoreData,CoreGraphics,Animation -Flurry,Testflight, lira, Basecamp, Dropbox If you are expecting such words as "High Quality", "Clean Code", "In Time Delivery" I would be the right person. If you can stand with "Memory Leaks", "Often Crash", "Low Quality", "Postponing the delivery" then I'm not your choice. I always try my best to be in the same line with the high technologies. You will be reported with the intermediate deliveries and project status every day and you will be able to take control over the whole progress. I can provide you with free bug-fix support for 1 month after submission of the app to the App Store. And if my project is not satisfied for you, you will be guaranteed 100% money back soon. Best Regards.

    $38.89 /hr
    0 hours
  10. Luis Katxi

    Luis Katxi

    Senior IOS & Android Expert

    Japan - Last active: 12/02/2014 - Tests: 2

    Over the last 5 years, I've been developed many mobile applications in various categories.I specialize in development of iPhone / Android apps of Social network apps , dating , shopping , fitness app and etc... I have strong knowledge of IOS programming languages, and I also ready building backend of mobile apps.I have been doing my best and contributing additional services for my clients. Look forward for your good response. Thanks and Best Regards

    $40.00 /hr
    0 hours