json Freelancers

Browse json job posts for project examples or post your job on Upwork for free!

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, 126 json projects are completed every quarter on Upwork.

126

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 4.65.

4.65
Last updated: May 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: Xamarin (.NET), Phonegap by Ionic (Angular JS), Cordova SDKs, JQM, Kendo UI - 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
    455 hours
    5.00
  2. Alex A.

    Alex A.

    Mobile/JS/Vision(GLSL/OpenGL/WebGL) Expert - Ready for iOS8

    Ukraine - Last active: 2 days ago - Tests: 8 - Portfolio: 21

    Dear Clients. I'm finding my pleasure in customer's dream! I would like to help you with my high skill and experiences. Especially I have got certification on iOS application development and Android application development area and my customers verified my skill on that as a senior level. I can give you everything in my major programming area such as: - Mobile Social Networking/Social Media App Development - Mobile Video/Image Processing, Video Editing, Video Streaming, Speech Processing, OCR - Search Engine Optimization - Google Analytics Algorithm Development - JIRA,Bitbucket,SVN,Git,GitHub,... - RESTFul/RESTKit/MapKit - Mobile GPS Location Tracking, Google Map App - Real Estate App && Website Development - Cocos2D/Box2D/Unity3D Game Development - GPUImage Framework,CoreData,CoreAnimation,OpenCV library, Dirac library, CoreJava. - Storyboards, Xib, Mobile App UI/IX development - Javascript--Angular.js,Node.js,Backbone.js,Knockout.js,Three.js,D3.js - PHP/MySQL/SASS/RubyOnRails-based Website Development - Python/Django - Symfony/MongoDB - WebGL/GLSL programming - XML/JSON/HTML/XHTML - Various Search Algorithm, Mathematics, Physics, other likes.. ... ... ... Note : I have iPhone4S, iPhone5S,Android Samsung GalaxyS3 and S4, iPad, Android Pad for testing apps. I can adjust my time zone to my customer. I can even provide my service for weekends as well. Actually while working with you. I don't need any holidays or weekends. I am a result oriented person, fully dedicated to my work. I am also a person to be trusted, honest and reliable, as well as I don’t need to be trained and have a proven track record. The best chance for you and for me is just my QUALITY certificated skills in my major area, and my FAST speed in programming and the best service for you by my hard working. Please let's go forward to make your idea to deal, then this try will become your pleasure and happy soon. Of course, it will be my happy as well. Sincerely. From Alex Adam.

    Groups: Application Developers Alliance

    $33.33 /hr
    952 hours
    5.00
  3. Vigorous Web

    Vigorous Web

    Web Developemt, SEO, Data Entry Services

    Pakistan - Last active: 1 day ago - Tests: 1 - Portfolio: 10

    Vigorous Web conveys everything you need to communicate effectively on the web. We understand how users interact with digital media, so we have usability at the foundation of our services. We give great importance to fresh ideas and crystal clear goals. Vigorous Web developing team is made up of multi-talented illustrators, designers, writers and software developers, delivering the right mix of creative finesse. Our team can create everything from single-page online brochures to interactive database applications for large companies or applications. We build and maintain high quality web site design and e-commerce web development solutions for a wide a range of businesses and individuals. We provide professional-level programmer and customized web development solutions in PHP, Open Source, Wordpress, Drupal, CakePHP, YII, Mobile UI, Responsive Sites, ASP, ASP.Net, AJAX, ATLAS, Flash Actions Script Programming, JAVA etc to our clients. We provide SEO and Data Entry services.

    $10.00 /hr
    10 hours
    5.00
  4. Oswald Daumiller

    Oswald Daumiller

    Senior Android Developer

    Norway - Last active: 3 months ago - Tests: 7 - Portfolio: 6

    Do you need great Android App developed with high quality and tight deadline? You came to the right place. Last 5 years I have developed various apps for Android including but not limited to social networks, clients apps for various web-based solutions, custom firmwares, complex solutions involving working with Bluetooth and USB hardware connected to android device. I always try to find the way to improve my skill in programming without impacting working performance and things to make client happy. In each project I try to use best practices to make code runs fast and let project became bigger without additional effort to rewriting parts of the application in future. My projects have a lot of technologies used: - Connection to the server and receive JSON , XML, PLIST files and .png and .jpg images. - Parse/Upload large data from/to server. - Working with camera, streaming video data, apply various effects to real-time video. - Bluetooth communications. - Connecting android devices to USB accessories. - Optimize loading big images into device memory. - Different layouts to show complex content to user. - Asynchronous work everywhere its required to load data dynamically and lets UI run data. - Animations. - Push notifications - Ads Don' hesitate to contact me any time, and lets make this word easy with quality applications. I will help you! Thanks.

    $38.89 /hr
    171 hours
    5.00
  5. Joseph Delgado

    Joseph Delgado

    Sr. Email Marketing Expert | Web Developer | BigCommerce | SEO

    United States - Last active: 07/08/2014 - Tests: 3 - Portfolio: 35

    I have the experience and abilities that you're looking for. Since 2000, I have worked in web development through owning my own web services company and through acting as a sub contractor for larger firms. Most of my work has been from the ground up - from design to SEO optimization. Therefore, I have extensive experience in every aspect of designing and programming websites. Since I have experience working as a sub-contractor and as a direct-to-customer service provider, I understand your concerns about hiring someone trustworthy and personable while still being efficient and self disciplined. Bilingual English / Spanish.

    Groups: BigCommerce, BoonEx...

    $50.00 /hr
    0 hours
    4.96
  6. Lakshman singh G.

    Lakshman singh G.

    Sr. Software Developer

    India - Last active: 21 days ago - Tests: 9 - Portfolio: 3

    Over the last 3 years I have been working on • iOS/Objective-C • XMPP • SpriteKit • JSON • PHP/MySql • HTML • CSS • Javascript I have also have good amount of experience in Mobile Application too as I worked in past 1 year Seeking a position to utilize my skills and abilities in the Information Technology Industry that offers professional growth while being resourceful, innovative and flexible.

    $10.00 /hr
    22 hours
    5.00
  7. Pankaj C.

    Pankaj C.

    I am expert web developer with html5 and jquery ajax skills. Mysql DB

    India - Last active: 6 days ago - Tests: 1 - Portfolio: 1

    I have 4+ year experience with developing various kind of websites/web applications. I have a good experience with PHP, Symfony 2.0 , Cakephp (Framework), Wordpress , Codeigniter, MySql, Ajax, Jquery, Javascript, CSS3 and HTML. API & Payment gateway: Google API, Paypal, Payment gateways, Google charts, Google maps, Full Calendar, SMS API. Web designing, Web development, Jquery and HTML services, Payment gateway, Paypal, Authorize.net, Google Map, Google charts, SMS API (Twilio)

    $5.00 /hr
    19 hours
    5.00
  8. Atif Majeed

    Atif Majeed

    Creative UI/UX/GUI Designer & Front End Developer

    Pakistan - Last active: 1 day ago - Tests: 9 - Portfolio: 13

    I am good in Web development, Designing, PSD Web Template Making, PSD to HTML(HTML5+CSS3 with cross browser capability) Photoshop Editing and Data Entry.(7 years of experience in Adobe Photoshop+Adobe Illustrator) I am well intimate with Prestashop platform for custom websites, themes & modules development. I have expertise in handling big projects in Prestashop and developing custom / complex sites & modules. I have delivered high quality work to my clients in timely manner

    $10.00 /hr
    175 hours
    4.94
  9. Simon R.

    Simon R.

    Php /Mysql web developer ,Database expert.

    India - Last active: 4 days ago - Tests: 3 - Portfolio: 5

    I am a professional web developer specializing in PHP+MySQL/HTML5/CSS3/Jquery/BootStrap. I offer services like web developing, optimizing websites for search engines. I am familiar with all the latest trends and technologies in the web development industry. When it comes to experience, I've been working in web development since 2010 which is 4 years as of now(2014). I have worked on numerous projects in all these years creating a big list of happy clients. Technologies I use in my projects: 1. PHP. 2. MySQL for backend. 3. HTML5/CSS3/JQuery. 4. Ajax /JSON 5. API's(Facebook,Linkedin,Google,Twitter) 6. Wordpress. 7.Google API's Charts,Custom Maps etc. 8.Dropbox API. 9.Twilio API. 10.Tokbox (Opentok) API Features of my work: 1. Responsive design. 2. Simple and elegant design. 3. Secure programming. 4. Hassle-free upgrades. 5. After sales support like installation and troubleshooting. I would like to highlight here that I am the right person if you are looking for a PHP developer for taking your business online i.e. Developing an online store. I love working with friendly and feedback giving people and I try my best to complete their work well within the due date without compromising quality of work. I hope that you will find me eligible to work for you. Thank You!

    $6.00 /hr
    248 hours
    4.74