json Freelancers

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


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.

Last updated: May 1, 2015
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  1. Zotov Ivan

    Zotov Ivan

    The Best Mobile and Web Developer

    Russia - Last active: 7 days ago - Tests: 6

    Hi, Everyone!!! Thanks for visiting my profile. I'm mobile app/game developer from Russia. To build a TOP 1 app, i am the guy for you. I have been developing Mobile apps & games (iPhone/iPad, Android Phone/Tablet) for more than 5 years. I'm very familiar with mobile app development such as iOS(iPhone/iPad/iPod) , Android, Phonegap, Html5. My better services are Fast Work, High Quality, Realtime communication and long term work. Objective C and iOS programming are my main technical parts. My mobile device list: - iPhone 5s, 5, 4s, 4, 3G - iPad Air, 4, 3, 2, iPad mini - Google Nexus, Samsung Galaxy S5, S4, S3, HTC One My skill-set: - Native: iOS, Android, Windows8 (Objective-C, Swift, Java, C#), JNI, NDK (C/C++) - Web service: XML/JSON, REST/SOAP - Device, Kit: Bluetooth Low Energy (BLE), iBeacon, Datzing, NFC, credit card reader, MIDI - Cloud backend: Parse, Amazon, Firebase, Foodie, remoteStorage, Twillio, Plivio - Chat & Messaging Engine: XMPP, Jabber, OpenTok WebRTC, Ejabberd, Erlang - Media Streaming: Wowza, SoundCloud, Red5, Icecast - Video/audio/image processing: OpenCV, GPU Image, CoreAudio, EZAudio, Pitch Control, Bass, AVFoundation - Vector graphics processing: SVG, SVGZ, Illustrator - Video/audio streaming, codec: Wowza, Red5, H.323, MPEG-4 - VOP, Cloud Communication: Twillio, Heroku, Tokbox - Speech recognition, text-to-speech, Siri, OpenEar - MySQL, SQLite, Oracle, SQL Server, ODBC - Facebook, Twitter, Linkedin, Instagram, Youtube, Pinterest, Vimeo - Google Map, Foursquare, Geolocation, GPS, Open Street Maps - Augmented Reality: Vuforia, Metaio - Cocoa - touch, Cocos2D, OpenGL, Corona, Unity3D, Box2D - Game Center, In-App Purchase, RPG server - iAd, Adwirl, Revmob, Admob, Chartboost, Tapjoy, Flurry, Testflight - Mantis, JIRA, RedMine, BaseCamp, Huddle, Sprint.ly, Github, BitBucket, SVN - Cloud services: iCloud, Rackspace, Zoho CRM, Salesforce, Azure, AWS, EC2, Dropbox - Enterprise Resource Planning (ERP), Cloud POS, Warehouse Management - P2P Payments: Bitcoin, Guldencoin, hivewallet, breadwallet - Online Payment Gateway: PayPal, Authorize.net, Stripe, Venmo, Braintree, Payleap - Mobile Game Genre: Casino Slot machine, Poker, Chess, RPG, Arcade I will provide my best for you. Thanks for your reviewing my profile. Zotov

    $44.44 /hr
    0 hours
  2. Nick Bakkum

    Nick Bakkum

    Mobile Expert

    Netherlands - Last active: 18 days ago - Tests: 10

    Hi Everyone, High technical & Strong communication! With the technical background and enthusiasm for mobile, I could achieve the solid knowledge of the iOS & Android platforms and extensive frameworks for 5 years. Also, I learned to follow the International Standards for Quality Assurance and I'm aiming at building the highest quality apps more competitive than others in the market. - My experiences : * iPhone, iPod, iPad, Android, Titanium, PhoneGap * design, cocoa, cocoa-touch, objective-c * Social Media - Facebook, Twitter, Google+ * Camera capabilities for photo and video + social sharing like instagram * iCloud, CoreData, Story board, Newsstand, CoreAnimation * Google Map Service, Foursquare, Geo Location * CoreData, CoreGraphics, Animation * Web Service, Ajax, XML, JSON, RSS, SOAP, WSDL * MySQL, SQLite, HTML5, PHP, JSON * Live Stream Video/Audio * Flurry, Testflight ... I'll do my best for provide mobile product of highly quality. Thanks for reading overview.

    $40.00 /hr
    2 hours
  3. ParthaSarathy Gadige

    ParthaSarathy Gadige

    .Net Lead Developer

    United States - Last active: 1 month ago - Tests: 1

    Master of Computer Applications from Visveswaraiah Technological University, Belgaum, Karnataka, India. Around 9 years of IT experience in Analysis, Design, Development, Testing, Implementation of N-tier Applications and web services using Microsoft technologies. Good hands on knowledge of OOPS (Object Oriented Programming Structure) Scope of excellence entails: Project Management, Software Development, Delivery Management, Requirement Gathering, Client Interaction, E2E architecture and Team Supervision.

    $39.00 /hr
    0 hours
  4. Dastan Tashimbetov

    Dastan Tashimbetov

    iOS developer

    Kazakhstan - Last active: 8 days ago - Tests: 2 - Portfolio: 5

    Good day commander, my name is Dastan. My portfolio consist of some apps that I've developed. I believe my strong points are my Creativeness and Punctuality. My main goal is always to meet your needs and deadline. When working on a new project, I like to speak with the client, so that I can have a clear understanding of his/her needs and vision of the project. I have an about 4 year experience with iOS development and I'm sure that my knowledge has a solid background for making almost any business application. Additionally, I should say that I have a Bachelors in Computer Systems and Software in Kazakh-British Technical University in Kazakhstan. Thank you in advance for your time and consideration. I look forward to working with you soon. Listed below are my experience and skills. — iOS (6.0+): Foundation framework, Core Data, Map Kit Framework, SQLite, HIG (UI); — Programming languages: Objective-C, Swift (just starting); — IDE: Xcode; — Core web: XML, JSON, HTML/CSS, JavaScript; — VCS: Git, SVN; — Bug/Issue trackers: Bitbucket, Crashlytics; — Ad-hoc distribution: TestFlight, Custom; — ArcGIS iOS SDK; — Google maps iOS SDK; — RestKit; — AFNetworking; — SDWebImage; — Google Analytics SDK for iOS;

    $34.00 /hr
    0 hours
  5. Rion Che

    Rion Che

    Mobile Expert

    Malaysia - Last active: 6 days ago - Tests: 5

    Hi sir, May I help you? I'm Mobile Expert that have rich and various experiences in Mobile field. I received a formal education for various programming language.(namely, I have 7+ years experiences for Java, Objective-C, etc.) ------- My experiences ------- * iPhone, iPad, Android, Xamarin * Design, Java, C#, Objective-c * Social Media - Facebook, Twitter, Google+ * Camera capabilities for photo and video + social sharing like instagram * iCloud, CoreData, Story board, Newsstand, CoreAnimation * Google Map Service, Foursquare, Geo Location * MySQL, SQLite, HTML5, PHP, JSON * Live Stream Video/Audio I can achieve the results that you are asking for, because I have good knowledge for Mobile App. I'll do my best for your project. Thanks for your time.

    $35.00 /hr
    0 hours
  6. stefan wessels

    stefan wessels

    Freelacne Mobile Application Developer.

    Sweden - Last active: 14 days ago - Tests: 3

    My expertise is in Objective-C, C++ and C programming on iOS, Mac OS X and Linux with experience in developing mobile and desktop applications. I also have experience of developing Android application for 1+ year. Web technologies are also my interest, like HTML, CSS and javascript. I have a good understanding of object-oriented design and analysis techniques as well as agile process for software development. I am a quick learner with attention for detail, and could quickly pick up any other technologies I might need. I have rich software development experience and extensive R&D skills. More than 10 years software R&D experiences from system level design to partial function implementation. Good teamwork spirit and communication skills.

    $35.00 /hr
    0 hours
  7. Joakim Wiholm

    Joakim Wiholm

    Senior PHP / Zend / MySQL / MongoDB / JS /AJAX Developer

    Sweden - Last active: 4 days ago

    I am a highly qualified and experienced web programmer with 9 years of professional experience in PHP from Sweden. My skills: - PHP / Zend Framework / Yii Framework - Javascript / jQuery / jQuery UI / AJAX / JSON / jQuery plugins - RequireJS / KnockoutJS - MySQL / MongoDB - Twitter API / Facebook API / YouTube API / Google Maps API - HTML / xHTML / CSS - PayPal / eWay

    $48.00 /hr
    0 hours
  8. Wang Tai

    Wang Tai

    Serious iOS/Android/Rest API Developer

    China - Last active: 2 months ago - Tests: 8

    My Development Area :  Photo & Video Sharing App  GPS Location and Google Map Based App  Bar code/QR code Scanner App  Image Marker and GPS Location Based Augmented Reality App  Social Media Integration such as Facebook, Twitter, Google+, YouTube, Instagram, LinkedIn, and Pinterest  Push Notification, In-App Purchase, Admob, Adwhirl, Paypal  UI/UX Design and Customization  Web Service Development using PHP/MySQL, JSON, XML  Testflight, Flurry  Github, Bitbucket, SVN and JIRA  Xcode, Objective-C, iOS 7/8, iPhone 4/5/6/6 Plus, iPad 2/3/4/Mini, iPod Touch My Promise :  Daily Communication  Full Time Working  On time and On Budget  High-Quality and Bug Free App  Clean and Well-Structured Code  Submission to Apple Store

    $36.00 /hr
    0 hours
  9. Qiuling Z.

    Qiuling Z.

    iOS and Web Designer and Developer

    China - Last active: 1 day ago - Tests: 5

    Hi, everyone! It's QiuLing from China. I specialize in Web and Mobile graphic design and iOS programming. Recent years, I have developed good web sites in HTML, CSS, Javascript, Ajax, Api integration and PHP. I am also working on iOS and have worked with APIs like Facebook, Instagram, Paypal, Google. Dedication and Accuracy of work is my strength. I wanna be a best provider for you.

    $36.00 /hr
    0 hours
  10. Tomas Kolam

    Tomas Kolam

    Certified Magento/Responsive Developer

    Finland - Last active: 2 days ago - Tests: 2

    Hello Upwork Clients, I'd like to introduce me as a certified magento developer. Magento/responsive are my major skills and I have really strong skill and rich experiences of it. If you have any magento project, I can help you perfectly. frontend/backend customizing, extension developing/customizing/integrating, responsive, speedup, multi-store/multi-domain setting, ... Also, I can install New Magento Security Patch on your site. As an excellent Magento developer, I guarantee you quick and quality result. Thanks for your care. :)

    $40.00 /hr
    0 hours