API Development Professionals & Consultants

Browse API Development job posts for project examples or post your job on Upwork for free!

API Development Job Cost Overview

Typical total cost of Upwork API Development projects based on completed and fixed-price jobs.

Upwork API Development Jobs Completed Quarterly

On average, 341 API Development projects are completed every quarter on Upwork.

341

Time to Complete Upwork API Development Jobs

Time needed to complete a API Development project on Upwork.

Average API Development Freelancer Feedback Score

API Development Upwork freelancers typically receive a client rating of 4.66.

4.66
Last updated: July 1, 2015
More options
Clear all filters
  1. Viktor S.

    Viktor S.

    Ruby on Rails/AngularJs Developer

    Russia - Last active: 9 days ago - Tests: 3 - Portfolio: 3

    Hi, my name is Victor. I specialize in developing rich web applications in Ruby on Rails, html5 and JavaScript frameworks (AngularJs, Backbone with Marionette). Some other tools/libs I use in my work: MySQL/PostgreSQL/MongoDB/Redis, jQuery, Twitter Bootstrap. Feel free to contact me about any project ideas or request you have - and we will discuss it.

    $33.33 /hr
    12 hours
    0.00
  2. Matthew Botos

    Matthew Botos

    Salesforce.com Technical Architect and Certified Developer

    United States - Last active: 5 days ago - Tests: 1

    I'm a Salesforce.com MVP and technical editor of the "Force.com Certification Handbook". As a native English speaker on the US East Coast, I can clearly communicate about your requirements in your time zone. I've delivered over $14 million in IT projects, with an exclusive focus on Salesforce.com for the last 7 years. I lead the 700-member PhillyForce user group and have presented at multiple Dreamforce conferences. My specialities include Salesforce.com technical architecture, API integration, and custom Apex and Visualforce development.

    $149.00 /hr
    0 hours
    0.00
  3. David Block

    David Block

    Integration Developer

    Canada - Last active: 21 days ago - Tests: 2

    I can help you connect data and systems together. I've worked with Single Sign-on, E-Signature, spreadsheets, databases (SQL Server, Oracle, Mysql, Postgresql, Access), cloud services (Google, Office365, DropBox), document management systems (Alfresco), web CMS (Joomla, Magento). My specialty is making things talk to each other using REST, WS-*, Mule ESB, or perl/Java programming. I can work in C#, php or javascript as well.

    $50.00 /hr
    0 hours
    0.00
  4. Richard McCluskey

    Richard McCluskey

    iOS Developer

    United States - Last active: 2 days ago - Tests: 1

    I have 2+ years experience in working with iOS Development (iPhone/iPad). I have worked with various teams to deliver end goals for the past 6 years. My speciality is Objective-C iOS Development, but I also have experience with Swift and the web back-end framework Django. Using my background in engineering, I enjoy creating applications that users find appealing and useful in their lives. Good communication is key when working together; I will try to get your app finished the way you envisioned.

    $33.33 /hr
    0 hours
    0.00
  5. Saravanan Murugesan

    Saravanan Murugesan

    Web developer - Spring MVC, Apigee, Angular JS, Javascript

    India - Last active: 1 month ago - Tests: 1

    Software engineer with 2 years of experience in web development and Rest API development Have experience in Spring MVC, Restful web services, Node.js, JavaScript and AngularJS. Have extensive knowledge in Apigee.

    $35.00 /hr
    22 hours
    0.00
  6. Marcus W.

    Marcus W.

    Software Developer with iOS/MacOS/Web experience

    Germany - Last active: 09/05/2014 - Tests: 2 - Portfolio: 3

    I love solving problems, above all with software. I become very excited and passionate about new projects and new technologies, and therefore I cannot stop learning new things. Worked on different iOS and Web Projects. Selected Work: • Quick Issue - Don't miss any issue or bug report, as soon as somebody tells you add them with Quick Issue. The quickest as is gets! (http://mwermuth.com/quickissue) • nextr - Pulbic Transportation Rethought. My part included the whole Development of the iPhone Application and Website. Was and is currently featured in the German iOS AppStore. We reached place 2 in the first week on the Top-Selling Charts. (www.nextr.info) • Kit-digital Internal iPad App. My part included the whole Development of the iPad Application, including custom User Interface work. Was developed for company Internal use as Marketing tool. (www.mwermuth.com) • Morbus - iPhone Application. My part included the whole Development of the Application. Currently not available to download. Medical disease Library with Note function. (www.mwermuth.com) Technical Experience: • Swift, Objective C (iOS and MacOS), including a variety of Frameworks • Terminal, Vim, XCode, Git, LLDB, Photoshop User • Very good understanding of User Interfaces and their implementation • Good knowledge of Ruby on Rails, CSS, HTML5, JS, Ruby, PHP • Operating Systems used: Mac OS (current), Linux, Windows

    $66.67 /hr
    0 hours
    0.00
  7. Chris Grice

    Chris Grice

    Experienced Web Developer

    United Kingdom - Last active: 06/16/2014

    Hi! I'm an experienced web developer based in Manchester, UK. I've been working with various web technologies for around 6 years. My day job involves creating and managing digital applications for Bauer Radio, a major radio brand in the UK. I've also worked in ecommerce for around 4 years, and am experienced with lots of ecommerce platforms and payment providers. You can see samples of my code here: https://github.com/cgrice And my personal website here: https://chrisgrice.com/

    $44.44 /hr
    0 hours
    0.00
  8. Derek Hinchliffe

    Derek Hinchliffe

    Senior Software Developer

    Australia - Last active: 08/21/2014 - Tests: 4 - Portfolio: 2

    I love finding creative ways to solve real-world problems; I believe great software can change lives; So I design and build great software. Current focus is full-stack, responsive web applications. Recent experience with AngularJS, SASS/CSS, CoffeeScript, ASP.NET Web API (C#), Entity Framework, Sencha Touch. I've worked across enough different platforms, languages and frameworks in my life to find it easy to get up to speed quickly with anything; whatever is the best tool for the job. I'm UTC+8, but I'm in a position to adjust working hours to suit US or Europe as needed for projects.

    $70.00 /hr
    0 hours
    0.00
  9. Nick J.

    Nick J.

    Web Application Developer & Systems Administrator

    Czech Republic - Last active: 02/05/2014 - Tests: 2

    I build modern, interactive and standards-compliant websites, provide technical consulting, planning and insight. I specialize in web application development, scalability, systems administration, and project management. I write clean, cross-browser compatible, SEO friendly and standards compliant HTML and CSS. I primarily work with front and back-end JavaScript (Node.js, AngularJS and more), although here is a more complete list of some of the technologies I have considerable experience with (in alphabetical order) Development CSS, HTML, JavaScript, JSON, Node.js, NoSQL, Perl, PHP, Python, SQL, WebSockets, XML Systems Apache, BIND, CouchDB, HAProxy, MySQL, MongoDB, nginx, Postfix, PostgreSQL, Redis, Sendmail

    $44.44 /hr
    0 hours
    0.00
  10. Mike Kh

    Mike Kh

    Cheaf Technology Officer

    Canada - Last active: 03/20/2014 - Tests: 2 - Portfolio: 1

    VISIT: www.youloox.com For more details. - Programming/Languages: C# - .NET Framework v 2.0-4.5, ASP.NET v 4.5, MVC 5, HTML 5, Razor, CSS 3.0, JavaScript, Java, SQL, XML, Visual Basic, Joomla, Delphi, Cross-Platform RESTfull Web Services, Web API, WCF - Frameworks: JQuery, Google/AngularJS, KnockoutJS, TypeScript, Ajax , Telerik, KendoUI, JSON, BSON - SQL Databases: MSSQL Server 2008-2014, MS Access 97 – 2010, MySQL, SAP Sybase, Oracle, PostgreSQL - NOSQL Databases: Graph DB, Hadoop, MongoDB, Neo4j, RavenDB - Design & IDE Tools: Adobe Photoshop CS5 - CS6, Adobe Dreamweaver CS6, Unity 3D - Software: Microsoft Visual Studio 2010-2013, MS Office, SharePoint, numerous Google – Microsoft and Apple solutions - Financial Software: Oracle, SAP, QuickBooks, Simply Accounting, Microsoft Dynamics GP - Operating Systems: Linux(Ubuntu,Debian,CentOS), Windows(XP, 7-8.1), Mac OS X, Windows Server 2003-2012R2

    $33.33 /hr
    0 hours
    0.00