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, 118 json projects are completed every quarter on Upwork.

118

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: July 1, 2015
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  1. Johanne Hansen

    Johanne Hansen

    iOS & Social & XMPP Professional

    Norway - Last active: 14 days ago - Tests: 9 - Portfolio: 1

    " Quality Service within deadline " I've got more than 9 years in IT. I've learned professional education and have got plenty experience. Especially I'm an expert in iOS development, social platforms' api, XMPP and WebRTC. My key skills and abilities include + iOS programming languages (X-code, Swift, Objective-C) + iOS SDK (Foundation, UIKit, Core Data,AVFoundation, MoviePlayer,Quartz Core,Core Animation, etc) + Various social platform and their api including Facebook, instagram, twitter, etc. + Text messaging and video/voice chatting - XMPP, OpenTok, Pusher, APN + Networking framework - AFNetworking, Web RTC, Socket.io TCP/IP + Map integration(GPS Location) / Google Map API, MapKit Framework + e-Commerce payment system - Paypal, Authorize.net, Stripe, Saleforce, card.io + ad serving or ad network SDKs (iAds, Google admob, etc) + Web service develop and integrating - JSON RESTful API, Parse.com, Node.js, Ruby, Mean + Various library development using C/C++ + Team Work - SVN, GitHub, Bitbucket

    $50.00 /hr
    10 hours
    5.00
  2. Alexander Pronin

    Alexander Pronin Agency Contractor

    Expert in Mobile Application Development and Project Management

    Ukraine - Last active: 3 days ago - Tests: 4 - Portfolio: 12

    Region IT company is the team of professionals whose passion is mobile applications. We are experts in Android and iOS apps development and UI design. This is what distinguishes us from others: R — reliability and privacy. E — experience (more then 15 projects during 2 years). G — goal of an project that is common with our partner. I — intelligent managers. O — opportunity of work in terms of fixed price, T&M projects and outstaffing. N — nice rates. I — innovative vision in a work. T — talented team of skilled specialists. We would like to offer you a collaboration on: • Android application development; • iOS application development; • testing of web and mobile applications; • design and UI/UX development; • .NET development.

    Associated with: Region IT

    $18.00 /hr
    341 hours
    5.00
  3. Matt Vaughn

    Matt Vaughn

    Principal Software Engineer

    United States - Last active: 12/30/2014 - Tests: 1 - Portfolio: 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
    0.00
  4. Jasim Ali Khan

    Jasim Ali Khan

    PHP,MySql, CodeIgniter, Laravel, Cakephp,Wordpress, Ajax, jQuery, JSON

    Pakistan - Last active: 1 month ago - Tests: 2 - Portfolio: 14

    I'm a freelance Web Developer / Designer for 5 years. My best asset is that i'm multi-purpose. I can respond to a lot of demands, concerning web in his all aspects and also admin support and windows issues. I have a large panel of skills for web programming and webmastering, especially PHP, CodeIgniter, laravel, WordPress,Xataface, Jquery and HTML with CSS. I drive my customers projects from end to end (administration, developpement, design, content, formation and so on). I'm particularly skilled for fixing issues for website for a large panel of languages and tools (CMS & other). I'm also qualified for windows admin support and office work as well. I have a full respect for my work, i do it quick, clear and polished. I'm available full-time a day (all day long connected on skype). I'm open for propositions that correspond to my skills and so on.

    $10.00 /hr
    0 hours
    4.98
  5. Dmitry Kazakov

    Dmitry Kazakov

    Android developer

    Russia - Last active: 1 month ago - Tests: 3 - Portfolio: 11

    Dear Client, My name is Dmitry, I am software engineer with focus on Android development. I have been developing Android applications for a five years -- it is big enough for young technology such as Android. I got this experience working in software outsourcing company when I had finished my Master degree at the Voronezh State University. I am goal oriented and deeply believe in mutual trust and respect relationships between people. Here what my clients and colleges says about me: "Dmitry is a rare breed and surely stands out in his detailed understanding of Android application development process and components..selfless in his approach he makes an excellent team player . I highly recommend Dmitry and look forward to working with him again." S Koundinya, Director –Client Relationship ,Methodology & Operations at Riskmatics https://www.linkedin.com/pub/s-koundinya/38/bb8/421 "To whom it may concern, Dmitry Kazakov is a very detail oriented, experienced software engineer. Dmitry was essential to improve our TeleRetail Platform. We therefore can recommend Dmitry for any software development project and we hope to be able to work with him again in the not too distant future. " Torsten Scholl, President, CEO, TeleRetail Corporation. Investor https://www.linkedin.com/in/torstenscholl "Having worked with Dmitry on various Android development projects, I can say that the quality of his work is excellent, his commitment outstanding and his knowledge and initiative bring value to every project." Florian Kriechbaumer, Product Development Director at iRiS Software Systems Ltd https://ae.linkedin.com/in/floriank "Dmitry is very enthusiastic developer passionate for learning new technologies and improving his skills. He always feels responsibility for the work he's tasked with and makes his best to make it in time and with great quality. He is also contributing to teaching young students about android development." Alexander Osmanov, Android Developer at Spotify https://se.linkedin.com/pub/alexander-osmanov/30/4a7/52a A short summary of my experience: - develop applications for Android since 2010 - more than 10 completed projects - takes roles of senior developer\technical leader and project manager - organize events such as Android school, speaker on events of technical groups Domain expertize: travel, telematics, e-learning Provide full-cycle software development for Android smartphones & tablets, wearables and Android TV: - requirements gathering and business analysis - software project advisory - lead, design, develop and implement new functionality of product - manage, coordinate and control the Team - manage change requests, demo and acceptance phase I also help my clients with introduction to Russian based talents with great engineering skills and reasonable costs attractive for offshore development. Please feel free to contact me if you are interested in any of my service. Here is more details about me and my experience ru.linkedin.com/pub/dmitry-kazakov/26/618/979/en and some of my apps which are not under NDA: https://play.google.com/store/apps/details?id=com.geogame.event https://play.google.com/store/apps/details?id=com.conducivetech.android.traveler.

    $24.44 /hr
    0 hours
    5.00
  6. Denis Patin

    Denis Patin

    Senior Ruby on Rails Developer, Technical Writer, Translator

    Russia - Last active: 12/27/2014 - Tests: 6 - Portfolio: 4

    Hi, my name is Denis. In a nutshell, I am senior Ruby on Rails developer with hankering and aptitude for creating user-friendly and highly-functional websites using the vast array of state-of-the-art yet already proven technologies. I am experienced in both back-end and front-end levels. Chiefly, I follow the MVC approach utilizing Ruby for controllers, MySQL or MongoDB for models, and HTML5/CSS3/JS for views. I also ably utilize the following technologies: — CoffeeScript — HTML and CSS template engines (HAML, Slim, SASS) — JavaScript libraries (jQuery, AngularJS) — Database engines (SQLite, Oracle) — Version Control Systems (git, mercurial) Besides, I have been working as a technical writer and translator for over 3 years. This experience substantially helps me in my website development activities because producing user's guides and manuals helps me better perceive users' preferences and needs so my end product is always highly customer-oriented. Thank you in advance for your time and consideration. I look forward to working with you soon!

    $25.00 /hr
    0 hours
    5.00
  7. Milam D.

    Milam D.

    Mobile developer and web content creator

    United States - Last active: 09/30/2014 - Tests: 2 - Portfolio: 2

    I hold a Bachelor of Science in Computer Science with a minor in English. I have worked developing native iOS and Android mobile applications for the past two years. Employers include Fortune 5 oil companies as well as small start ups. I have also freelanced during this period writing content and creating websites. My goal on this site is to use the experience to help broaden my scope as a developer. As such I'm flexible on payment amount as long as the project is interesting.

    $40.00 /hr
    0 hours
    4.01
  8. Anastasia Shtripling

    Anastasia Shtripling

    PHP developer

    Russia - Last active: 5 months ago - Tests: 5 - Portfolio: 3

    Hi, my name is Anastasia and I'm web-programmer. I have an engineering degree in the Automated systems of information processing from Omsk State Technical University. Since 2012, I worked on Drupal-projects for US customers. Also from 2013 I'm developing the back-end of the high load web projects. Listed below are my experience and skills/ - Web tools: PHP, JavaScript, HTML/CSS, JSON, XML - DataBase: MySQL - VCS: Git - Bug/Issue trackers: Redmine, Basecamp

    $10.00 /hr
    0 hours
    0.00
  9. Nikos Gyparis Volakis

    Nikos Gyparis Volakis

    Java / Big Data Senior Software Engineer

    United Kingdom - Last active: 08/04/2014 - Tests: 1 - Portfolio: 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
    0.00