API Development Professionals & Consultants

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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
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  1. Antoan M.

    Antoan M.

    Full-stack Software Arhictect / CTO

    Bulgaria - Last active: 1 day ago - Tests: 13 - Portfolio: 5

    I have a PhD in Computer Science with 20 years of experience. I am architect and builder of a Enterprise Grade Platforms, that are designed using proven technologies, that ensures the platform will scale along with customer's business needs. It is the same technologies that are in use today in mission critical systems at companies such as Google, Facebook, Yahoo!.

    Groups: LoginRadius

    $70.00 /hr
    1,592 hours
    5.00
  2. Tornike Tvalavadze

    Tornike Tvalavadze

    Planing, Design and Development of iOS Apps

    Japan - Last active: 1 day ago - Tests: 1 - Portfolio: 8

    My name is Tonriké, or Toto for short. I'm independent freelance iOS developer and designer based in beautiful city of Kanazawa in Japan. I help companies and entrepreneurs to plan, design and develop iOS applications, usually — from scratch. This covers everything from information in-take, analysis and architecture to application prototypes, user-interface design and software development. I also offer those services separately; however, I will not do UI design without comprehensive UX consulting. Technically, my skill-set covers anything from iOS Foundation frameworks to advanced topics like image processing and digital signal analysis. I already develop and help community to research Swift Language and latest Apple technologies. My experience as iOS developer starts right after iPhone SDK was debuted in 2008. Fascinated by product design and information architecture, I also started to design user interfaces and planing software products in 2009. In 2013 I was offered to teach "User Interfaces for Programmers" in Caucasus University in my hometown, Tbilisi, Georgia. That's what I did and as result, ended up creating whole syllabus which is still in use by university. I'm also fluent with many other technologies around those languages: Ruby, JavaScript, Go-lang. I charge what I charge because I'm one of the best in business, and results I provide are not disposable. "Fire and forget" is not my style of working and many returning clients are prove to that. I do not accept "I need Instagram clone for $1000" jobs, those are for scammers and "developers" desperate to ruin their reputation for little money. In short: If you want high quality, fully-working, maintainable and well-planned product with pre-development consulting and proper design, than contact me.

    $80.00 /hr
    878 hours
    4.99
  3. Jordan Dalton

    Jordan Dalton

    Laravel Expert | PHP | MySQL | CSS | jQuery

    United States - Last active: 1 day ago - Tests: 2 - Portfolio: 1

    Since 2006 I have worked with local small business, government entities, and multi million dollar corporations, developing websites, web applications, as well as administering systems and networks. Over the past 8 years I have developed numerous skills that make me an all-around candidate to serve you. The following is a list of my software skills: • Frameworks: Laravel 3/4/5, Zend, and Codeigniter • Languages: PHP, Python, C#, and JavaScript • Databases: MySQL, SQL, and DB2 • Markups: HTML, HTML5, CSS, and CSS3 • Version Control: Git and Subversion • Shopping Carts: Magento and BigCommerce • APIs: PayPal, ASI Central, Twilio Here is a list of my systems/networking skills: • Spiceworks Help Desk Ticket System • Windows NT/2003/2008/2012 Servers • Exchange Server 2010 • SonicWall Firewall • ESET Node 32 Endpoint Protection • Symantec Brightmail Messaging Gateway • Cisco Routers • Cisco, Dell & HP Switches • Printers • Software Installation I pour out all of my passion into every single project. I truly want to see you succeed. Let me help take you, your company, your product/service to the next level.

    $55.56 /hr
    637 hours
    5.00
  4. Orest K.

    Orest K.

    Senior System Architect

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

    I am a highly skilled senior developer with extensive development experience in system design, .NET technology stack including C#, ASP.NET, MVC, Web Api, SQL, Entity Framework. In addition I'm passionate about JavaScript and related technologies, namely AngularJS, Knockout, NodeJS, Express etc. I have Computer Science degree from one of the top Engineering school in US Few of my latest project listed below. Architected and implemented service oriented framework built on a variety of technologies including .NET, MVC , HTML5, ASP.NET Web API, Entity Framework,AngularJS, KnockoutJS, RabbitMQ, RequireJS and others. Designed and implemented Enterprise Single Page Application standards and led a team to successful project implementation using SPA. I have Computer Science degree from one of the top Engineering school in US. Please see my test score for my qualifications.

    $55.00 /hr
    193 hours
    5.00
  5. Marcin K.

    Marcin K.

    Senior Software Engineer / Python / iOS

    United Kingdom - Last active: 2 days ago - Tests: 2

    I run a tech consultancy and I'm working from Bali, Indonesia (UTC +8). I use Python and Django for backend and APIs, Objective-C for native iPhone apps, Vagrant for setting up dev environments. I also have some experience with front-end (JS, HTML, CSS, Bootstrap) and data analysis/machine learning. I’m a quick study problem solver, I do what’s necessary to accomplish tasks. 8+ years commercial experience in tech as a developer, ux and graphic designer. Summary: - Python, Django, Flask, Tornado, Django-Rest-Framework, SQLAlchemy, py-test, factoryboy - iOS 7, Objective-C, ReactiveCocoa, AFNetworking, RestKit, CocoaPods - HTML, CSS, Bootstrap, JS (jQuery, Backbone) - LAMP, Heroku, AWS, MySQL, PosgreSQL, Redis - architecture, design patterns, best practices - git, mercurial, svn - continuous integration - lean, agile

    $38.89 /hr
    910 hours
    5.00
  6. Dmitry Artamoshkin

    Dmitry Artamoshkin

    Browser extensions expert (Chrome extension, Firefox addon)

    Russia - Last active: 1 day ago - Tests: 6 - Portfolio: 7

    Current areas of interest: Browser extensions, plugins, bookmarklets and etc. Developed dozens browser extensions for Chrome and Firefox browsers for clients and for personal use. I've gained rich experience in Ebay API, Google Drive API, VK API, online dictionaries, html5 video and a lot of other APIs and technologies. And I'm always ready to master something new. Page modifications, script injections, toolbars, popups, mashups, API integration, user action automation - that's my job and I really like it! Also I have strong web-development background and I have got rich experience in: - Perl, PHP, HTML, CSS, Javascript, jQuery, AJAX, MySQL - Yii, Wordpress, Joomla - Adobe Photoshop, Adobe Illustrator. Master's Degree in Computer Science. Have 7+ years of experience in IT Industry. I'm looking for the opportunity to utilize my varied skills in full-time or part-time work.

    $35.00 /hr
    730 hours
    5.00
  7. Olivier Tisserand

    Olivier Tisserand

    Senior Software Architect

    Spain - Last active: 5 days ago - Tests: 1 - Portfolio: 1

    French Senior Software Engineer with a career structured in several axis : - DevOps technologies (Vagrant, Chef, Amazon AWS, VirtualBox, Jira, Confluence, Crucible, svn) - Testing Automation (Hudson, Jenkins, Cloudburst, JUnit, JBehave, Cppunit) - Senior Software architect : Java, C#, C++, Ruby, RoR, Python, Oracle, SQL Server, MySQL. - Data mining solutions linked with SQL databases.. - Data acquisition systems and monitoring, Building Intelligence, Protocol handlers. - Statistics and Numerical analysis (R language, Eviews, Matlab, Scilab) - Artificial Intelligence and specific languages, with industrial applications. - PPC Statistics & API (Adwords, Adcenter) - Networking with a Wireless Internet Provider (Mikrotik specialist). - Business Intelligence With 25 years experience in France and Spain as Consultant Engineer in various business environment, able to handle and develop projects involving multiple environments and technologies.

    $33.33 /hr
    3,025 hours
    5.00
  8. Daniel Z.

    Daniel Z.

    Highly skilled API integrator, PHP (ZF) Coder and Project Manager

    Poland - Last active: 1 day ago - Tests: 7 - Portfolio: 6

    Goal: Project and develop high quality apps for your success. Profile: OOPHP & Zend coding, IT consulting and business analyst, project coordinator and manager, Other skills: Apache, Bind, SSH, bashscripting, Memcached, Github, Solaris, Oracle, MySQL, Radius, AD, expert knowlegde of many *ux and windows systems Advantage: Project and implementation of many web apps. Most of it projected and developed by myself using Zend Framework, Google API (youtube, gdata), social API (twitter, facebook). Some of it integrated with operating systems or AAA software (radius, ldap). Usually Design Patterns were used (like Template Method, Version of Control, DAO, Dependency Injection, Decorator and so on). Some application built upon a structure of web services (XML, REST, JSON), some using jQuery and AJAX. Tools and technologies: Apache, radius, bind, ldap, Zend Framework, XML, SOAP, Linux, Linux daemons, Memcached, Sockets, REST, JSON, Oracle, MSSQL, MySQL, Design patterns, MVC, SVN, BASH, PHPUnit, Xdebug, Unit testing, Google Youtube API, Google Gdata API, Google Maps API, Facebook API, PayU API

    $35.00 /hr
    1,673 hours
    4.98
  9. Eugene A.

    Eugene A.

    PHP/HTML5/JavaScript/ASP.NET MVC developer/architect

    Ukraine - Last active: 4 days ago - Tests: 16 - Portfolio: 9

    Started as Asm and Delphi programmer over 10 years ago. But due to lack of interest from buyers to professionals in that sphere I have changed my specialization to web-developer and found that it's much more interesting. Over the last 9 years i worked for many companies all around the world. I have sucessfuly complete dozens of projects using wide range of technologies. I am a programmer and i do not stuck to any specific technology, Here is the stack of most common ones that i recently used: Concepts and patterns: OOP MVC MVVM MVVP TDD Languages: PHP5 C# JavaScript HTML5 Platforms: LAMP(PHP) WAMP(PHP) IIS(ASP.NET) Node.js DataBases: MySQL MSSQL PostgreSQL Cassandra Template engines: Twig, Smarty Razor Frameworks: Zend Symfony2 Silex Fatfree Yii PhpUnit Angular.js Knockout.js Backbone.js Jasmine ASP.NET MVC5 Libraries: jQuery Mootools Bootstrap D3 three.js CI: Jenkins ApacheAnt PhpMD PhpCS Tools: Git GitHub SVN Jira Redmine I also worked as teamlead in middle-sized and large projects. I have a nice experience building startups from the scratch, starting from team assembly and ending with project deployment and CI. I do not take fixed price assignments.

    Groups: ebay

    $70.00 /hr
    4,693 hours
    5.00
  10. Sergey M.

    Sergey M.

    Software Engineer | Master's Degree in Computer Science (MSCS)

    Belarus - Last active: 1 day ago - Tests: 9 - Portfolio: 4

    Highly skilled Software Engineer with 5+ years of experience in developing application for customers from different parts of the world. I am an expert in API implementation. And I am familiar with wide range of technologies mainly focused on .Net C# desktop and Web applications. My strong analytical skills combining with real practical experience allow me to provide you perfect solutions in reasonable period of time.

    Groups: Application Developers Alliance, ebay...

    $33.33 /hr
    878 hours
    4.97