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.


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. Prince Garg

    Prince Garg Agency Contractor

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

    India - Last active: 9 days ago - Tests: 7 - 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
  2. Izudin Avdibasic

    Izudin Avdibasic

    Software Developer / Web Developer

    Bosnia and Herzegovina - Last active: 16 days ago - Tests: 4

    Over the last few years I have developed many sites in php, sql (mysql), joomla2.5 based code. Have gained a lot of experience in jQuery, and javascript dinamical evironment in a lot of projects. Managed a few big projects from UI and Logo design, over coding their background dynamics to the SEO in many ways.

    $10.00 /hr
    45 hours
  3. Boris Kovac

    Boris Kovac

    iPhone & Android Developer

    Hungary - Last active: 23 days ago - Tests: 2 - Portfolio: 1

    ********************TOP IOS/ANDROID Expert******************** Welcome to Boris's World! Over last 6 years I have successfully developed various mobile applications, using Web Services, Push Notifications, Core Data/SQLite databases, Animations etc. I have experience and skills in -Social Networking with GPS, Maps,Chat, Event,Comment,Media Sharing -Photo/Video Editing&Sharing with Social, Effect, Filter -Health & Fitness App with GPS, Social, Map -Fashion Shopping App and Travel App with Deal for Hotels -Order&delivery Food and Drink in restaurant -SQLite , MethodAPI , AFNetworking , RSS Feed , CoreLocation framework, Twilio api,Parse.com,VOIP My goal is to create the perfect product based on a vision of the client's business requirements. My role is to satisfy client’s needs. I hope to be any help to you. Thanks, Boris

    $33.33 /hr
    130 hours
  4. Martin Karasek

    Martin Karasek

    iOS/iPhone/iPad/Android/Objective-C/Swift/Java Expert

    Czech Republic - Last active: 4 days ago - Tests: 4 - Portfolio: 1

    I have developed a wide range of iPhone/iPad/iOS Apps using xCode/Objective-C/Swift/Java including Photo & Video Sharing Apps, Dating Apps, Location Based Apps, Augmented Reality Apps, Utility Apps and Trivia Quiz Games for over the last 5 years. As a freelancer, My Objective is to deliver "High-Quality" and "Bug Free" App which you and your customers like. My highlight projects and my roles in 2014. 1. Healthcare / Fitness iOS app developer as Core iOS developer. - iPhone / iPad UI programming - RESTful API integrating - iOS 8 HealthKit integrating - Created iOS framework for custom widgets - Connected with several 3rd-party health/fitness apps - Worked with good team play - Trello / Slack experience 2. Social / Messaging iOS app developer as Senior iOS developer. - iPhone / iPad UI programming - RESTful API integrating - iOS device compatibility - XMPP text messaging - Opentok video conference - Great git / jira experience 3. Fun / Social photos game developer as iOS developer. - Improved game UIs - Fixed / Updated game front-end - Parse back-end - AppStore / iTunes experience 4. Sports iOS app developer as Lead Swift programmer. - Swift programming - Converting Objective-c to Swift - Cocoapods experience 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 - GPS - Core Location, MapKit, MapBox, GooglMap - 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 - 3D programming - OpenGLes, NinevehGL, Cocos3D, PVRGeoPOD - Web service integrating - JSON RESTful API, Parse.com - Social integrating - Facebook, Twitter, Pinterest, Tumblr, Google+ - Good team play - Git, Bitbucket, Trello, Jira - Daily Communication - Skype, Slack, HipChat, Email I own an iPhone 4S, iPhone 5, iPad 3, and iPad 2 to test on. My workstation is a Mac Pro with Xcode 6, Adobe Photoshop CC, and Microsoft Office installed. I'm now seeking opportunities that will allow me to further develop my skills by providing creative and high quality solutions to my clients. I enjoy new challenges on a daily basis, looking to overcome my own high standard goals I will always do my best to realize your idea into application perfectly. Please feel free to contact me anytime with your idea. Thanks.

    $55.00 /hr
    11 hours
  5. Bogdan S.

    Bogdan S.

    Software Developer - Java, Android

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

    Hi, my name is Bogdan Stadnyk. In my portfolio, are a few of the programs that I've developed. I believe my strong points are my Punctuality and Knowledge. My #1 goal will always be to meet your needs and deadline. When working on a new project, I like when I can have a clear understanding of client needs and vision of the project. I'm honest and fair. Listed below are my experience and skills. Programming languages: Java, Android, С, C++, Python; IDE: Eclipse, Idea; DBMS: PostgreSQL, SQLite, MySQL; Standards / Protocols: TCP/IP, UDP, HTTP, XML, HTML; VCS: Git; OS: Windows, Linux; Other Skills: OOP, design patterns, anti-patterns, client-server design. I'm looking for new interesting job, new experience and opportunities for grows. I also interesting in team working with other freelancers and in remote work.

    $4.44 /hr
    38 hours
  6. Eric C.

    Eric C.

    D3 Data Visualization Expert

    United States - Last active: 9 days ago - 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
  7. Nikola Ivanovic

    Nikola Ivanovic

    FrontEnd developer

    Serbia - Last active: 2 days ago - Tests: 1

    Currently, I am employed at Emisia Consulting, in the position of QA Web Engineer and Team Lead for second shift for OneLink Translations (part of TransPerfect group). My work as a web engineer has included the site maintenance (on daily, weekly and monthly basis) for some of the world's largest brands, such as Citrix, Disney, Fairmont Hotels, Volkswagen, Puma, Johnson & Johnson Healthy Essentials, American Eagle, Lululemon, Starwood Hotels and many more. And as a Team Lead to organize and re assign daily jobs my team, provide them with necessary informations so they can complete tasks on time, helping them to overreach problem that they have occurred etc. My duties include preparing new sites for production, optimization target(translated) sites for the most frequently used web browsers (Firefox, Chrome, Internet Explorer) and mobile devices, bug-fixing, communication with PMs (Project Managers), IMs (Implementation Managers) and Clients etc. I am experienced in using FireBug, Photoshop, SVN, HTML/CSS, JavaScript, jQuery, Shell Scripting, Jira project tracker, UNIX, MySQL,PHP, working with Linux, iOS, Windows...

    $20.00 /hr
    1,199 hours
  8. Rodion Stukalo

    Rodion Stukalo Agency Contractor

    Senior iOS Developer

    Russia - Last active: 4 days ago - Tests: 5 - Portfolio: 4

    Hi, I am Rodion. I have an experience in mobile development more than 5 years. I'm full of knowledge of all steps in applications development process. I have solid skills in C/C++, Objective-C, Java, iPhone and Android SDK. I want to improve my knowledge in this sphere as much as possible. And my main aim is to present perfect application.

    Associated with: Modern Software

    $27.78 /hr
    296 hours
  9. Ilya Torop

    Ilya Torop Agency Contractor

    Belarus - Last active: 3 days ago - Portfolio: 1

    Hello, my name is Ilya Torop. I'm finishing a Bachelor's degree in Computer Science from Belarusian State University of Informatics and Radioelectronics this year. I have 1+ year experience in developing Android apps. I have 1 finished product, which I'm now supporting. Also I've worked on a few apps and recieved a good experience in Fragments API, GCM, and OSM APIs. I've been working closely with Google Maps API, Stripe, Card.io, Jenkins. I prefer to work with Android studio and Gradle. I am responsible and sociable and i think it will help me and my customer, that I'm working with, to have a good impressions about each other and the work that I'm doing. Here are some more skills that I have: Multithreading, Collections API, REST API, XML, JSON, Git, Jira, SQLite I forward to working with you.

    Associated with: Panda Systems

    $22.22 /hr
    574 hours