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, 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. Prince Garg

    Prince Garg Agency Contractor

    PHP,MySql,Wordpress,Joomla,jQuery,Json,AJAX,HTML5,CSS3 developer

    India - Last active: 7 days ago - Tests: 6 - Portfolio: 3

    I am a PHP, mysql, wordpress, joomla, jQuery, json, AJAX, bootstrap, html5, css3 expert with more than 5 years of experience in the field of web programming and web designing. I believe in working hard, delivering quality work and adding new skills to my skill set continuously. Looking to work on challenging projects of my domain. I have worked on social media APIs, Google APIs & multiple payment gateways so far.

    Associated with: DotTechnologies Agency

    $14.44 /hr
    66 hours
    0.00
  2. Jaskiran K.

    Jaskiran K. Agency Contractor

    iOS (iPhone/iPad) expert in Swift / Parse /JSON / XML / API / Android

    India - Last active: 1 day ago - Tests: 4 - Portfolio: 13

    Absolutely dedicated to creating top notch mobile applications for my clients, I am a skilled programmer with 4 years of development experience in developing iphone and Android Mobile applications. I love develop apps. I like complex and diverse assignments that keep my mind sharp and allow me to constantly learn new things. _____________________My Technical Skills Swift , Objective-C 2.0 , IPhone iOS-2.X/3.X/4, IDE - XCode-3.X , Interface Builder-3.X, Instruments. _____________________I specialize in : - iOS7.0, 8.0, Android - Objective-C, Swift, Autolayout - PHP, Javascript, CSS3, Json, XML - SQL, Coredata - Xcode(5.1.1, Xcode6.1), SDK FrameWork - Custom API (FaceBook SDK,, Twitter API, ,Instagram API, phpfox API, parse API, FireBase, Foursquare , Amazon S3) ____________________Backend skills - Strong command on versioning control system like Git, branching, tags etc. - Java EE - Strong OOP concepts. - Design Patterns. - Database architecture and management. - Google Cloud Platform - App Engine - Objectify library. - Creating and managing RESTful API using App Engine. - Writing clean and readable code with comments. - Working with other team members. - Issue tracking systems like JIRA, Trello. - Image and Videos caching, manipulation, pagination and optimization. - Strong knowledge of push notification technologies.

    Associated with: CS Soft Solutions Pvt. Ltd.

    $18.00 /hr
    1,182 hours
    4.77
  3. Fatih O.

    Fatih O.

    iOS Developer

    United States - Last active: 1 day ago - Tests: 4

    I graduated from Pace University with a Bachelors of Science degree in Computer Science. I have had a great internship right after graduating, where I improved my iOS app development skills. I am currently a self-employed iOS developer residing in New York. I have over 3 years of experience in iOS development. For over 3 years, I have helped individuals and companies with developing iOS apps and consulted them with mobile app solutions. I am very confident working with XCode, Objective-C and my skill sets also include developing back-ends for iOS apps with Parse and PHP. I believe in creating top quality apps with professional and friendly service. I will be more than happy to assist you with your project. More at http://fatih-ozkul.com

    $50.00 /hr
    382 hours
    5.00
  4. Mahesh J.

    Mahesh J.

    Web Developer/ WebDesigner

    India - Last active: 1 day ago - Tests: 14 - Portfolio: 2

    I have 3.5 years of Experience in Software Development. I have strong Software development skills with experience in Web Application and Web Development in N-tier Client-Server based Internet technology, intranet portal design/development; Web based data reporting system, workflows, Framework development for Internet application. My experience has stretched across various programming languages including C#, ASP.NET, Ajax and Jquery. I am also well versed in RDBMS concepts. My skill sets include the following: Web Design Skills - HTML - CSS - Bootstrap - Psd To Html - Adobe photo shop cs3 Development Skills & Technologies - ASP.NET - MVC 3 - 4 - 5 - C# - AJAX - Web Service - JavaScript - J query - XML - Angular js - WebApi - Json Database Expertise - SQL Server 2005-2008 - LINQ - Entity Framework Deployment, Troubleshooting at Client server, Data Migration, Fix issues at Client end. Proficient in Web Designing, Web Portals, Web Applications, Parallel Programming

    $5.56 /hr
    663 hours
    5.00
  5. Amit Kumar

    Amit Kumar

    ASP.NET and MVC Software Engineer

    India - Last active: 4 days ago - Portfolio: 2

    Over the last 4+ years, I have developed a wide range of websites using HTML, .NET /mvc, using sql server 2008/2012 in C# ,VB and PHP using my-sql including sites for startup companies and small businesses. My core competency lies in complete end-management of a new website development project, and I am seeking opportunities to build websites from the ground up for you or your business. I also have great experience in the following areas: - Javascript/ Jquery/ Ajax & jQuery, jQuery UI - HTML/ XHTML/ CSS - JSON/ XML - MS SQL server 2005, 2008,2012 - Visual Studio 2.0/ 3.0/ 3.5/ 4.0/5.0 – ASP.NET/ VB/ C# - .MVC 2.0/ 3.0/ 4.0/5.0 Razor - Web services, LINQ - Entity Framework - APIs (Twitter, Facebook, Google+, Instagram, LinkedIn,Long Tail) - Core PHP - My SQL Server -Kendo UI -Telerik .NET UI Controls -SVN/TFS

    $11.00 /hr
    24 hours
    5.00
  6. James Chan

    James Chan

    Senior IOS/Android Developer

    Hong Kong - Last active: 6 hours ago - Tests: 7 - Portfolio: 5

    Greetings! I am a professional iOS/Android mobile application and game developer with more than 7+ years experience. I published over 100 apps and games to App Store and Google Play. My product have very high quality and takes short time to complete. My main development method is Agile. Mobile Platforms 1. iPhone 6 plus, iPhone 6, iPhone 5s, iPhone5c,iPhone5, iPhone4s 2. iPad Air, iPad4, iPad3, iPad mini 3. Google Nexus 5, Samsung Galaxy S5, S4, S3 May main skills are : 1. Objective -C ,Swift ,Java, PHP 2. Social Media Integration(Facebook, Twitter, Linkedin, Instagram, Youtube, Pinterest, Vimeo), Vector graphics processing 3. GitHub,Trello, TestFlight 4. Backend (Parse, Firebase,Foodie, Twillio, Plivio) Chat & Messaging Engine: XMPP, Jabber, OpenFire, Ejabberd 5. Web service: XML/JSON, REST/SOAP 6. Bluetooth Low Energy (BLE), iBeacon, Datzing, NFC, credit card reader, MIDI 7. Location Based Service (Google Map, Foursquare, Geolocation, GPS, Open Street Maps) 8. Cocos2D, Cocos2D-x,Box2D,Unity3D 9. Mobile Advertisement integration (iAd,Chartboost, AppNext, Revmob, Admob, Tapjoy, Flurry) 10.Online Payment Gateway: PayPal, Credit Card 11.Speech recognition, text-to-speech, Siri, OpenEar 12.MySQL, SQLite, Oracle, SQL Server, ODBC Thank you for your time. James.

    Groups: Application Developers Alliance

    $33.33 /hr
    437 hours
    4.79
  7. Zhang Tao

    Zhang Tao

    Senior IOS7/8 & Android Social Networking App developer

    Hong Kong - Last active: 6 hours ago - Tests: 7 - Portfolio: 9

    ********* HONESTY + HIGH-QUALITY + FAST SPEED ********* I am a hardworking, results-driven, highly proficient IT professional with 6 years experience and a real passion for mobile application development. Readily embracing cutting-edge technology, I have gained an in-depth understanding of the main mobile platforms and recognize the subtle differences between each. Having helped develop a series of commercially successful apps on iOS, Android and Windows Mobile, I am seeking a new opportunity that will allow me to further expand on these skills. SOFTWARE SKILLS Experience with: 1) Development Platform: - MacOSX 10.8.2+ / XCode4.6+ / iOS5+ - Android SDK 2.2+ - Xamarin 2) Main Skills: - Chatting, Dating - Image Coloring, Captioning, Filtering, Camera & Gallery - OpenCV, OCR, Image Processing - Communication with backend-web server with JSON, XML - Apple Map, Google Map, GPS, Augmented Reality - Parse.com, UrbanAirship, QuickBlox, OpenTok, Twillio - QuartzCore, CoreData, OpenGL ES - Sqlite, Mysql - cocos 2d, ccos 2d-x, Mysql 3) Accessories - Game Center, In-App Purchase, Push notification - Social integrating with Facebook, Twitter, Google+, Youtube, Instagram - iAd, Adwirl, Admob, Revmob, Chartboost, TapJoy, Cerebro - Github, JIRA, bitbucket , Testflight, Dropbox - Bug sense, ACRA Thank you for your reading. Zhang

    $33.33 /hr
    25 hours
    5.00
  8. Marin Antonescu

    Marin Antonescu

    Talented iPhone App Developer with Web Programming Experience

    Romania - Last active: 2 days ago - Tests: 7 - Portfolio: 11

    I'm an iOS developer with over 8 years of professional experience in software engineering, including last 4 years in development of applications for Apple's mobile devices and earlier background in web development. I'm passionate about efficiently creating great software in agile way. Skills and expertise: - Scrum/Agile development experience, - understanding of software release process, - ability to communicate and collaborate efficiently with remote managers and teams (emails, teleconferences, project tracking tools, bug tracking tools, etc.), - experience in work for international customers (USA, UK, Germany) in multinational team, - hands-on code review process, - working with cross-platform code, - understanding of quality assurance process, - focus on getting things done, - ability to learn new technologies quickly, - ability to act as a team leader, - focus on gaining information needed to deliver the work, - ability to design and develop the product satisfying customer needs, - understanding of post-release customer support process, - iOS and Android experience as a user.

    $66.67 /hr
    94 hours
    5.00
  9. Petr Nicolaevich

    Petr Nicolaevich

    Excellent Android & iPhone & Backend Developer

    Czech Republic - Last active: 2 days ago - Tests: 7 - Portfolio: 4

    Hi. My name is Nicolaevich . I have been a professional App Developer for 5 years and counting. My goal is to provide the client with their needs. I have vast experience and knowledge as I have worked on small and large projects. I used to work for a company but have now moved away working as a freelancer for myself. My key skills and abilities include (NOT limited to) - Fast mobile UI programming - iPhone5 / iPhone6 / iPhone6 Plus on iOS 7 / iOS 8, Storyboard, Swift - Text messaging and video/voice chatting - XMPP, OpenTok, Pusher, APN - Integration with - HealthKit, CloudKit, HomeKit, AirPrint - Networking framework - AFNetworking, Web RTC, Socket.io TCP/IP - Motion Tracking - CMStepCounter - GPS - Google Map, MapKit, GeoLocation, CoreLocation, CoreDate, CoreLocation on mobile SDK - e-Commerce payment system - Paypal, Authorize.net, Stripe, Saleforce, card.io - Media manipulation - CoreAudio, CoreVideo, AVFoundation, CoreGraphics - Data and Graph visualization - Core Plot, iOSPlot, JBChartView - Web service integrating - JSON RESTful API, Parse.com - Social integrating - Facebook, Twitter, Pinterest, Tumblr, Google+ - Team Work - SVN, GitHub, Bitbucket - Daily Communication - Skype, Slack, HipChat, Email In addition, I have a talented graphic designer and I can build full application including UI graphics only from your idea or mockup. I am using the Github and SVN to manage my project code and I always made refined and optimized codes. I am available to chat by Skype or eMail and would be happy to set up a convenient time to discuss the project you`re moving and some ideas. If you are expecting such words as "High Quality", "Clean Code", "In-Time Delivery" I would be the right person. If I can not do I'll clearly say "No, it's not my area". My motto is "Be ahead and Be honest!". Thanks very much. Nicolaevich

    $35.00 /hr
    326 hours
    5.00
  10. Akira Matsui

    Akira Matsui

    Fullstack App Developer : iOS/Android/Parse/Node/Sails/Meteor/MongoDB

    Japan - Last active: 1 day ago - Tests: 9 - Portfolio: 1

    As a full stack mobile app developer,I've 5+ experience with iOS and Android app development. Working as a freelancer,I take the latest technology and make the most of it to give my clients one-of-a-kind solutions. I deliver new ways for clients to reach their business objectives and goals, by merging my creative strength with my technical expertise. At the same time,I'm expanding my horizons and bringing new services to clients. Skill Set Mobile:iOS,Android,PhoneGap Web:Laravel,Node.JS,AngularJS,Bootstrap3,HTML5,CSS3 SDKs:Parse,Google Map,Facebook,Twitter,XMPP,Amazon S3 EC2 AWS,iAd,Admob,Chartboost,Paypal,Authorize.net,Stripe,Bitcoin Open Street Maps,MapBox,MapQuest,Instagram,Pinterest,Linkedin I'm committed to clients' success by delivering top service and solutions that exceed expectations time and time again. Guided by my commitment to quality,creativity and good business sense,my work is not done until the client is satisfied. At me,you will find honest and straightforward prefessionalism with amazing programming talents I'm ready and waiting to create your custom solution. If you're looking for innovation,results and programming experts for your business,we should talk soon.

    $45.00 /hr
    361 hours
    5.00