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: June 1, 2015
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  1. Maxim Vorobey

    Maxim Vorobey

    Senior Software Engineer/Architect

    Russia - Last active: 20 hours ago - Tests: 3

    I am a web application developer specializing in PHP/JS with 15 years of experience. strong OOP knowledge, MVC etc php, mysql, html, css, less, js, coffeescript twitter bootstrap, jquery, backbone.js, angular.js ajax, json, xml C/C++/Objective-C (just for fun) load balancing, big data, high traffic data scraping, data parsing saas, soap, rpc, rest phpunit, phpspec, tdd, bdd, xdebug symfony, symfony2, zend2, doctrine2, bitrix mysql, postgre, mongo (clustering, replications) memcached, redis, rabbitmq, sphinx ubuntu/debian/centos/archlinux/osx nginx, lighthttpd, node.js, apache2 git, mercurial, svn opengl, glsl api: paypal, facebook, twitter, livejournal, vkontakte, jira, mailchimp, mandrill, zendesk, amazon aws agile/scrum: jira, redmine https://github.com/n3b

    $69.00 /hr
    2,421 hours
    5.00
  2. Niels Ganser

    Niels Ganser

    German Engineered Ruby on Rails Solutions & Reliable Project Managment

    Germany - Last active: 20 hours ago - Tests: 7 - Portfolio: 3

    Hi, I'm Niels, a seasoned software engineer based in Germany mostly working on web applications of all kinds using Ruby on Rails (3 and 4), (My)SQL, mongodb, redis, HTML(5), CSS and JavaScript in an agile manner. I also set up and maintain Linux servers. Several applications that I architected, implemented and maintain are in active production use. Please see my portfolio for details. I have years of experience as a senior developer – working solo, in co-located teams as well as in distributed teams – and hold a postgraduate diploma in Management of Software Projects. My greatest prides are proactiveness, reliability and good communication Please note that I do *not* do graphic design. Not for a lack of interest, but for an unfortunate lack of artistic talent. Sorry! :)

    Groups: Engine Yard Ruby on Rails Professionals Network

    $128.50 /hr
    5,371 hours
    4.97
  3. Aldrin L.

    Aldrin L.

    Architect, Backend Engineer (Scala, Java, Hadoop)

    Brazil - Last active: 6 days ago - Tests: 12 - Portfolio: 1

    Over the past 15 years I've worked with projects ranging from Startups to Fortune 100s. From C++ to Scala, past assignments involved: - Protocol Design in C++/Delphi - Java API Publishing - Maven Plugin Development - Distributed Systems using RESTful backends - Scala / Akka Design - Jenkins Plugins Writing On a daily basis, I spend between Systems Architecture, Build Planning, for Hadoop and Restful Backends, specially under Amazon Web Services. Oh, I'm also a Cloudera Certified Administrator and Developer. Favorite platforms include Scala, Python and General Java. See my full profile for more descriptions and feel free to browse my github and bitbucket profiles at the addresses below: http://github.com/ingenieux http://bitbucket.org/aldrinleal Favourite customers involve pragmatic teams, with contant online presence, and direct involvement with the end customer, and a problem involving legacy and the next generation Feel free to discuss our next project - I'm always looking for the next challenge!

    Groups: LoginRadius, Microsoft Certified Professionals

    $55.56 /hr
    3,112 hours
    4.82
  4. Oleg Batishchev

    Oleg Batishchev

    Magento Jedi / Senior Web Developer / Consultant

    Russia - Last active: 15 days ago - Tests: 6 - Portfolio: 9

    Hello dear customer, Yes, I'm not wrong, cause after read that you will wanna to hire me ;) Well, now seriously ... I am a highly experienced web developer who has primary direction of activities in e-Commerce web-developing, in that case it's a Magento area. I'am an adept of Magento and if you don't know what is it and you wanna e-commerce site you have to contact with and I will explain how is Magento awesome. I have 3 years experience in Magento and 9 years total in PHP developing with an MVC, different CMS (Wordpress), frameworks (Yii, Zend) and other. I always stick to the coding standards and follow the best practices to provide seamless, readable and reliable code. Besides developing I have some administration skills to manage servers, automate routines and can improve performance of Magento backend and frontend as well. Also I can setup the server from a scratch. I prefer a stack for Magento consists of: Nginx, Php-Fpm, Redis, Apc, Mysql 5.5 (5.6) (Percona better), SOLR/Lucene/Sphinx. I prefer do not install any control panels but if required I would prefer ISP Manager 5 Lite. Magento related Experience and Services - Optimization, load improvements, speed up - Extension development and customization - Troubleshooting - Tweaks & tricks - Bulk importing. Do you have 100k products? It's not a problem - Store migration - AWS, Rackspace building an architecture of you infrastructure - Core upgrade - Magento recurring support - Bug/error fixing - Theme design and customization - Consultation - Code review I also have some basic skills in the desktop programming (C#) and some Photoshop skills. I'll be glad to new acquaintances and long-term cooperation. I have a team of developers and every day we are expanding. Just hard to write all things what I can do. I am easy learnable for new stuff (frameworks, custom systems, foreign code). My strong side is a backend developing and have a good knowledge of a frontend side: - HTML5/CSS3 - Bootstrap - jQuery - Ajax - WebSockets, Long polling - Prototype - ExtJS - Google API, Yandex API - many other things that I can't remember at this moment. Also in a less degree Angular, Backbone and other frameworks/libs. Communication Channel : Skype/Whatsapp/Email/Phone I have listed only a little part of my portfolio cause I have many jobs completed and I can't add every job to profile.

    $45.00 /hr
    1,164 hours
    4.98
  5. Yogesh Trivedi

    Yogesh Trivedi

    Magento Expert Developer / Magento Designer / PSD to Magento Template

    India - Last active: 20 hours ago - Tests: 16 - Portfolio: 5

    I’m Professional Magento Expert with having 7 years of overall experience and 5+ years of core Magento Design, Development, Customization experience. With all this skills and worldwide eCommerce merchandise experience I’m became of Magento consultant where I can guide you through all the process of Magento, I’m always updated with all its news which I am using to deploy the best solutions for my clients. I’m oDesk Magento Verified Developer - https://www.odesk.com/contractors/?g=odeskverifieddevelopers&q=magento I’m a team player where I can support you to manage and hire best remote team for your eCommerce project playing role of Consultant and I believe its worth to have a consultant for project who have ability to develop and design robust solutions. My approach starts from understanding the business concept along with the requirement which is making me to understand the whole scenario very quickly. I've working experience with Core PHP, WordPress, Joomla, Prestashop but I only like to work with Magento eCommerce as it’s my core and professional expertise and eCommerce is my robust and attractive topic always. Below are my expertise with Magento: Magento Front end design and Development Magento Back end Development Customized Magento Extension Development Complex Coding Third Party API / Web Services Integration Payment & Shipping Method Development and gateway Integration Purchased Template Installation and Integration Magento Template Design from scratch PSD to Magento Design PayPal Payment Method and API Expertise Magento and third party data transfer bridge I can communicate/hold interview via oDesk, have good communication skills, comfortable to talk and chat over Skype, Hangout or Phone.

    Groups: Application Developers Alliance, BigCommerce...

    $38.89 /hr
    2,117 hours
    4.95
  6. Dimitar A.

    Dimitar A.

    WordPress Themes & Plugins Developer

    Macedonia - Last active: 5 days ago - Tests: 14 - Portfolio: 21

    I am available and motivated to work on any project involving the WordPress platform, PHP or JavaScript. Have also passed tests like WordPress and PHP with flying colors and hold the 1st place with Bootstrap. Over the past 9 years I have been involved in a wide range of projects - from websites to applications and integrations. These included Wordpress platform, Magento, Zen Cart, Facebook apps, flash-based applications, custom-made web sites, tools or applications made from scratch with PHP, JavaScript, Ajax and Jquery, Cron jobs, GIT, SSL etc. Recently have been working with open-source scripts like Font Awesome, Columnizer, FitVids and others. I have WordPress.org submitted and approved WordPress plugins. I earned the gold medal on oDesk and have passed many other tests like PHP, JavaScript and WordPress with flying colors. I have 1700+ logged hours and 60+ jobs in my work history. I am excited to meet new people, learn new things and work on challenging projects!

    Groups: Bluehost Developers and Designers, Crossrider

    $49.00 /hr
    1,776 hours
    4.77
  7. Olivier Tisserand

    Olivier Tisserand

    Senior Software Architect

    Spain - Last active: 7 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. Sergey M.

    Sergey M.

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

    Belarus - Last active: 2 days 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
    808 hours
    4.97
  9. Daniel Z.

    Daniel Z.

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

    Poland - Last active: 4 days 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
    1,615 hours
    4.98
  10. Antoan M.

    Antoan M.

    Full stack IT, CTO level Startups consulting

    Bulgaria - Last active: 20 hours 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
    1,571 hours
    5.00