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. Vitaly Sas

    Vitaly Sas

    Expert Android developer

    Belarus - Last active: 6 days ago - Tests: 3 - Portfolio: 3

    I specialize in developing Android apps and have over 4 years of experience in commercial app development. I'm looking for a interesting projects to do a really good job. Challenge me and I'll do my best to create high-quality app in order to meet your wishes. I look forward to working with you. Thank you for reviewing my oDesk resume. Best regards, Vitaly Sas.

    $50.00 /hr
    1,453 hours
    4.90
  2. Peter R.

    Peter R.

    Senior iOS Developer

    Romania - Last active: 10 days ago - Tests: 7 - Portfolio: 7

    Thank you for viewing my profile! I am a professional iOS developer with over 5 years experience in this field, but worked with other technologies as well in the last decade. Since developing apps for the iPhone and iPad I had the pleasure of both working in a large company, but also as a successful freelancer on small and medium size projects. I am new to oDesk, so far I have been working on other freelancer websites. You can see some reviews of my previous work on the following link: https://www.elance.com/s/p_r_861027/job-history/?t=1. My portfolio lists only a handful of apps I've had the chance to work on. I'm looking for clients that are seeking experience and quality in iOS development. I took 2nd place in the iOS Programming Test. Looking forward to working with you!

    $35.00 /hr
    41 hours
    5.00
  3. steve matheson

    steve matheson

    Technology & Design For Your Business

    Canada - Last active: 1 day ago - Portfolio: 39

    For over 15 years the Incognito Group has worked to connect businesses with their potential clients using the best available design and technology. We provide a comprehensive range of services (from web development & hosting, to branded games and mobile apps) and an exceptional commitment to customer service and support. We traverse the sometimes daunting gamut of cutting edge technologies so our clients can enjoy the simplicity and reassurance of knowing all their needs are being met with professionalism, efficiency, and panache.

    $45.00 /hr
    68 hours
    4.62
  4. Aleksandr Kondrik

    Aleksandr Kondrik

    Senior iOS Developer

    Russia - Last active: 1 day ago - Tests: 5 - Portfolio: 7

    Hello, With 3+ year of experience in I get expertise in iOS and .Net development. I love develop apps. I like complex and diverse assignments that keep my mind sharp and allow me to constantly learn new things. Have some apps in AppStore: 1) iDrom - mobile client for site www.drom.ru 2) Autoservice 717 - business application for car service

    $33.33 /hr
    246 hours
    5.00
  5. Alin Barbu

    Alin Barbu

    Developing high quality native apps.

    Romania - Last active: 2 days ago - Tests: 4 - Portfolio: 7

    iOS Development | Android Development | UI/UX Design | QA Testing | Backend Solutions | Project Management | Bug Fixing | Porting Apps Between Platforms I am a full-service mobile developer and our mission is to help entrepreneurs and business owners expand their reach in the rapidly growing mobile marketplace. I have always worked towards putting together a solid team of experienced engineers, able to properly handle all aspects of development. From simple but intuitive principles to complex functions and backend coverage, I am always looking for our next big challenge. If youíre interested in starting a new mobile venture, then I am interested in hearing from you. I can provide: 1. Complex functionality I have a wealth of experience in both iOS and Android platforms: tell us what you want your app to do and weíll tell you how it can be done. 2. Integration with 3rd party APIs A lot of remarkable technology is already available which can be used to enhance the userís experience. I know how much this can improve an appís value and we never shy away from using the latest trending APIs. 3. Eye-catching designs I know how important it is for each app to have a unique and attractive look. That's why design is very important to us and our creative team has always come through in this regard. 4. Stability I will ensure the app is functioning properly and resists to stressful situations. 5. User-friendly, intuitive layouts I understand the importance of providing the user with a pleasant experience every time they access the app. This is another key focus that will always be covered in the design stage. 6. Feedback and consulting Having been in this business for a long time, we can provide our clients with thorough insights and qualified suggestions. I take a genuine interest in the apps we work on. You can always expect us to welcome questions and discuss the project together. 7. Quality Guaranteed Once an app is released, we provide a 6 Month Quality Guarantee. If any issues were to arise during that time which fall within the scope of the project, I will handle them free of charge. Our General Approach to Development: 1. Project breakdown Review the scope of the project; determine requirements and provide an approximate cost 2. Wireframing Create a visual representation of the project breakdown See example here: https://dl.dropboxusercontent.com/u/8542183/wireframe_example.png 3a. Graphic Design Decide color palettes, create layouts, icons etc (overall branding and design of the app) 3b. Web and Backend work At this stage, we also begin work on any 3rd party requirements the application might have. 4. Development We provide development builds and updates regularly (at least twice a week, but sometimes as often as every day) 5. Client Approval We work with the client until the app has been successfully released on the App Store. If needed, we can provide several small iterations for comparison. 6. Post-Production Support After release, we provide a 6 Month Quality Guarantee. If any issues were to arise during that time which fall within the scope of the project, our team will handle them.

    $33.33 /hr
    25 hours
    5.00
  6. Viktor Naryshkin

    Viktor Naryshkin

    Windows Phone expert

    Ukraine - Last active: 1 day ago - Tests: 3 - Portfolio: 20

    Tons of successfully developed Windows Phone projects. I'm TOP-rated Windows Phone expert on stackoverflow (http://stackoverflow.com/users/820813/ku6opr) and I'm open for new projects I'm degreed in Computer Science and have 5 years of background in C#., NET , Silverlight, WPF (oDesk verified). I'm interested in Windows Phone, Windows Phone Universal apps that target Windows and Windows Phone and Windows 8 projects If you need a skillful mobile developer, I will be glad to work with you. I'm provide safe outsourcing services, secure processes, and top quality results for your business. Technologies: Windows Phone 8 / 8.1 Windows Store / Windows Phone 8.1 Universal app Windows Store Strongest skills: A deep familiarity with C# and XAML Experience working with push notifications, live tiles and Windows Phone SDKs Experience with third-party libraries and APIs Solid understanding of the full mobile development life cycle

    $33.00 /hr
    482 hours
    4.98
  7. David B.

    David B.

    Senior Mobile App (iOS/Android) & Server Back-end Developer

    Netherlands - Last active: 2 days 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: Phonegap by Ionic (Angular JS), Cordova SDKs, JQM, Kendo UI - Xamarin (.NET) - 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

    $77.78 /hr
    599 hours
    5.00
  8. Annie Y.

    Annie Y.

    Senior iOS/Android app developer

    Hong Kong - Last active: 1 day ago - Tests: 10 - Portfolio: 4

    Thanks for your visiting I have the experience and expertise in delivering high performance mobile applications on platforms including iPhone / iPad and Android / Tablet for over 3 years. I usually work on popular mobile platforms - iOS & Android. With a deep understanding of the core technologies driving iOS and Android platform, I can quickly find solutions to engineering challenges and deliver superior mobile apps to clients on time and on budget. Please feel free to contract me if you have any question or need pretty result. Looking forward to working with you. Thanks Annie

    $55.56 /hr
    15 hours
    5.00
  9. Bruno Marek

    Bruno Marek

    Senior Mobile(iOS&Android) Developer with Best Web experience

    Czech Republic - Last active: 2 days ago - Tests: 11 - Portfolio: 11

    I've been a senior mobile app developer in the mobile space for 7 years with a proven track record of completing projects on time and exceeding client expectations. During this course, I was responsible for bringing several high profile apps and Web site on the market. I'm here to bring your ideas and vision to mobile, web market with success and I have lots of experiences in software building from scratch. I also have some experience in the following areas; 1) Mobile (iOS/Android) - Social network application ( Chat, Dating, Instagram, Facebook, Twitter integration ) - Push Notification( APNS, GCM ) - Google Map, Geo-location, Barcode/QR Code scan - Business application - Backend web service, REST API+ 2) Web - Javascript, jQuery, KendoUI, DHTMLX, Html5 - CMS: Wordpress, Joomla - eCommerce: Magento, Shopify, PrestaShop - MVC: Codeigniter, CakePHP, Laravel, Zend - CVS: Git, SVN I am always trying to give the good quality and high speed to my clients. Do you want to save your money and time? Contact me. I can give the best result to you. Don't hesitate to get in touch if you have questions!!! Regards, Bruno

    Groups: Pro Web Designers

    $42.00 /hr
    92 hours
    5.00
  10. Alex Kimura

    Alex Kimura

    Mobile Champion (Exellent Result + Fast Service)

    Japan - Last active: 10 hours ago - Tests: 9 - Portfolio: 8

    Mobile Champion High Quality + Fast Speed = Excellent Result + Business Success, this is my working style. In this site, if you want to implement your idea, then I am always ready for you. My Skills are as follows: - Social App - Online buy/sell Marketing/Shopping business App - Online Chatting/Messaging App - Photo/camera/Video/Audio app (Sharing/Uploading/Downloading/Filtering/Editing/Streaming/Mixing/Recording/Processing etc) - GoogleMap/GPS App - ObjectiveC, SWIFT, XCode, Java, Cocos2D, Box2D, Unity3D, Cocos2D-X, Visual C++ - Web Service API(PHP/MySQL/JSON/XML/HTML5/Jquery/Javascript/CSS/Ajax...) -Shopping Cart/Ecommerce/PHPFox etc... I have below mobile devices. - iPhone 6, iPhone 4S, iPod5, iPad 2, iPad Air. - Samsung Galaxy (4.0.3, 4.1.4). Thanks.

    $33.33 /hr
    0 hours
    5.00