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, 377 API Development projects are completed every quarter on Upwork.


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.

Last updated: May 1, 2015
More options
Clear all filters
  1. Luca Cicale

    Luca Cicale


    Italy - Last active: 06/30/2014 - Tests: 8 - Portfolio: 3

    I started developing about 30 years ago. In my career I have worked for public administrations, banks and very important E-commerce web sites such as Yoox. I have a deep experience in J2EE, Asp.Net., sql server, Oracle dbms, android. J2EE most used tecnologies: Spring, struts, axis, hibernate, JSP, JSF, JPA, EJB, Jboss. Microsoft: SSIS, C#, IIS, MVC, RabbitMQ Preferred IDES: Eclipse, NetBeans, Visual studio.

    $55.56 /hr
    0 hours
  2. 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
  3. Joshua Estes

    Joshua Estes Agency Contractor

    Developer, Consultant, Entrepreneur

    United States - Last active: 4 months ago - Tests: 4

    Highly talented and skilled software professional willing to work as a developer where I will get an opportunity to utilize all my knowledge and other skills to benefit your organization as well as grow to become a stronger developer.

    Associated with: dSpace Labs LLC

    $35.00 /hr
    0 hours
  4. Nicolás Moreira

    Nicolás Moreira

    IT Consultant

    Uruguay - Last active: 08/26/2014 - Tests: 3

    IT consultant with more than 6 years of working and entrepreneurial experience in large scale systems. Always-recognized platforms like a PHP with Symfony2 framework, Doctrine2, RESTful services, PhoneGap, Pentaho and MySQL they are my main tools. Those tools, continuous learning and agile methodologies like Scrum make me a successful solution provider.

    $29.00 /hr
    0 hours
  5. Loren Hale

    Loren Hale

    Ruby/Rails/JavaScript Developer w/ Startup experience

    United States - Last active: 11/22/2014 - Tests: 4

    I thrive working with out-of-the-box thinkers in a collaborative environment. I enjoy utilizing my experience and talent developing scalable applications as well as optimizing business operations and processes. I love working with diverse and extremely talented groups that use agile methodologies and encourage advancement within the team. I take a keen interest in developing forward-thinking APIs that automate business processes. I also enjoy finding, researching and implementing new and emerging technologies and tools to help in the refinement of operations and development. Technologies: Ruby, JavaScript, APIs, Highly Scalable web services, BPM, Process definition, Business Workflow, Process Analysis I am also familiar with... git source control BDD (behavior driven development) TDD (test driven development) I believe in 100% test coverage CI (continuous integration) I strive for all As code quality (code climate) AWS (Amazon web services, EC2, SQS, DynamoDB) RESTful web services and APIs Scalable web application architecture BPM (business process management and workflow design) Accounting fundamentals and the importance of business financial metrics

    $38.89 /hr
    0 hours
  6. Ivo Vachkov

    Ivo Vachkov

    DevOps Engineer

    Bulgaria - Last active: 09/25/2014

    I am IT Operations Engineers with 10+ years of experience in UNIX, System and Network administration. In the recent years I developed keen interest in DevOps and try to follow publicly accepted best practices as a DevOps engineer. I am interested in work in the following areas: 1) DevOps Services 2) CloudOps Services 3) BigData Operational Support Services 4) Classic IT Operations I have hands-on experience with large-scale complex distributed elastic systems (hundreds to thousands of server scaling daily in AWS, Joyent and Heroku), multiple technology stacks (C/C++, Python, Java, PHP) and BigData platforms (Hadoop, Manta).

    $45.00 /hr
    0 hours
  7. Daniel Iglesias Gonsálvez

    Daniel Iglesias Gonsálvez

    Spain - Last active: 12/09/2014

    Over the last 8 years I have been involved in "data centric" projects, dealing with data extraction (web scrapping), data curation, data storage, data analysis and data visualization. My programming languages for these tasks are Python, R and Javascript (Node JS). You can find my project portfolio as freelancer in http://www.realdatafacts.com. My projects have been related with tourism, real state, bank, etc. My speciality is to develop interactive web apps so that the user can play with the data and validate his hypothesis instead of reading a static report. One example of this is the app http://www.bigdata.andalab.org and http://florencia.realdatafacts.com I use the latest technologies in order to develop such apps: MEAN stack (MongoDB, Express, Angular JS), Meteor JS, Grunt, Bower, Yeoman. Other strength is the development of web scraping projects able to extract information from complex web pages (ajax, javascript) in a reliable way and avoiding banning. Finally I am able to develop complex architectures that scale (micro services, AMQP brokers ,etc.). I have a MSc Industrial Engineering (Electronic and Automatic) and a Machine Learning Master. You can see my entire profile in https://www.linkedin.com/in/igledaniel

    $40.00 /hr
    0 hours
  8. George S.

    George S.

    Expert Engineer and API Guru

    United States - Last active: 10/01/2014 - Tests: 1 - Portfolio: 1

    George is a skilled technologist and entrepreneur with over a decade of programming and mobile strategy experience. He has conceived and founded two successful startups and coded numerous back end and front end systems including intricate hypermedia APIs serving millions of customers worldwide. George is fluent in Python, Javascript, HTML/CSS, and Objective-C/iOS. He is at home within numerous cloud hosting service providers including AWS and intimately familiar with LAMP/AJAX/SQL/NoSQL architectures. He is also an expert in payment systems and processing as well as API architecture and design.

    $150.00 /hr
    0 hours
  9. Alexandre Carneiro

    Alexandre Carneiro

    Senior Software Architect

    Brazil - Last active: 4 months ago - Tests: 2

    Strong skills in c#.net, wcf, entity framework, sql server, t-sql, postgre, solr, mysql; Strong skills in software development, software architecture, test planinng, test oriented development; Strong skills in software documentation, applications planning, let applications cloud-ready; Project management with Agile and PMP; Infrastructure for deploying solutions; Strong skills in remodeling your software infrastructure, git repository planning, infrastructure-as-a-service, cloud applications; Mobile development HTML5+CSS3+javascript; Strong javascript + jquery plugins development; Wordpress plugins developer; Kinect SDK + Android SDK + arduino developer; Microcontroller development; Brazilian computing engineering;

    $40.00 /hr
    0 hours
  10. Albert Bahia

    Albert Bahia

    Full-Stack Developer | Passionate Creator | Engineer | Entrepreneur

    United States - Last active: 09/24/2014 - Tests: 3 - Portfolio: 1

    I am a full-stack developer looking to make dents in the universe. I love creating things that help people everyday. After watching The Social Network, I became driven to make an impact on the world. For any task/project, I have extensive experience in developing proposals, project planning, logistics, test planning and execution, and data analysis / reporting. For web development projects, I conduct an overall design architecture using Unified Modeling Language (UML) and Entity Relationship Diagrams (ERD) to understand how the whole project will work. I develop with Ruby / Ruby on Rails, Javascript / jQuery / Backbone.js / Ember.js, Rspec / Capybara (Test / Behavior Driven Development), Git, PHP / MAMP. I also follow agile development practices by developing against User Stories (Trello). As an addition to my web development, I have experience in deploying Wordpress. I have 7 years of experience as a project engineer for the US Army so I follow a systematic process when conducting your work.

    $35.00 /hr
    0 hours