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

334

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 4.65.

4.65
Last updated: July 1, 2015
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  1. Leo J.

    Leo J.

    Engineer in Computer Science - Developer - Research

    France - Last active: 1 day ago - Tests: 15 - Portfolio: 1

    Hello, I am a 27 years old engineer in Computer Science from France. After graduating from the Institut National des Sciences Appliquées of Rennes, I moved over to Sweden to follow a master program on Mobile Systems. Meanwhile, I was also working as a freelance web-developer/project co-leader for a Canadian company. While learning, I participated as a trainee to many professional project and learn to be flexible both in my ways of working in a team and on the technologies to use. Indeed, even so my major programming languages are Java and PHP, I could easily learn C# during my master thesis in Sweden and build up a nice piece of software to work with Sifteo cubes. Software architecture and system design are two of my strong background points, thus I thrive in realizing project from the beginning until the end. My professional experiences involved many non programmer and non computer scientist customers and allowed me to train establishing their needs and to translate them into sprints, backlog and deadlines. I also believe that knowledge in computer science without knowledge of the real world are wasted hence my interests for books, sail, roller-skating, ice hockey as well as environmental questions for instance. Looking forward to working with you.

    Groups: Application Developers Alliance

    $33.00 /hr
    439 hours
    4.96
  2. Daria G.

    Daria G.

    Back-end and front-end dev and photographer

    Ukraine - Last active: 1 day ago - Tests: 2 - Portfolio: 1

    I specialize on Ruby on Rails and front-end development. In spite of the fact I have got a degree in International Journalism and Translation, I worked as QA and IT Sales for total of 3 years (from 2008) and then moved to web development from Jan, 2012. I have performed both back-end tasks (from basic CRUD to making simple APIs or server scripts) and front-end (building static websites from scratch or developing views with twitter-bootstrap). I believe the experience is formed with the quality of the projects, you have delivered, and not with the years of sitting in front of the laptop. Specialties: ruby 1.9.2+, Ruby on Rails 3.0+, linux and MacOS X environment, unix-shell, Git, SQL (SQLite, MySQL, PostrgeSQL), HTML, Haml, CSS, Sass, Less, twitter-bootstrap, javascript, jQuery Here is link to my github profile: https://github.com/amseledka I do photographs and various design tasks in my spare time, as well as help my friends with Russian-Ukrainian-English translations. My flickr profile: http://www.flickr.com/photos/37859578@N06/

    $33.33 /hr
    1,803 hours
    4.61
  3. Ben Chan

    Ben Chan

    The API Consultant

    United States - Last active: 2 days ago - Tests: 1 - Portfolio: 6

    I have lots of experience building, documentation, and interfacing with APIs. This is my consulting rate, which generally only requires an hour or two of time per project. I've created this account specifically to manage my consulting opportunities. I do the majority of my work on Elance, but I believe there are lots of great opportunities on ODesk as well. If you need a quick consultation to help solidify a business plan, please do not hesitate to contact me here!

    $100.00 /hr
    2,359 hours
    4.91
  4. Hamdan A.

    Hamdan A. Agency Contractor

    Experienced Web Developer

    Palestinian Territories - Last active: 6 days ago - Tests: 4 - Portfolio: 5

    My objective is to find a long term contract with a company who needs a rock-solid PHP/LAMP programmer. I have been a key contributor for several high-volume e-commerce websites over the past 10 years. My work has included open-source PHP5+ frameworks, such as CodeIgniter and Laravel. I am guru-level in HTML, CSS, Javascript, AJAX and Jquery, various payment gateways such as Authorize.net, Paypal, Plimus as well as other CMS and e-commerce systems including WooCommerce, eCommerce and BigCommerce. I also have experience administering Apache, Nginx, SVN, MySQL, Linux, SSL, etc... My strengths are innovative thinking, resourcefulness, flexibility to accommodate your time zones, efficient code and ability to solve the most difficult tasks using the simplest solutions. Here is a list of all skills that I am very good at: ✔ Native PHP Development , Organised , OOP , and Commented clean code. ✔ WordPress: WooCommerce, BuddyPress, bbPress, Genesis, OptimizePress, ClassiPress, Thesis, PageLines, Gravity Forms ✔ e-Commerce: Woocommerce, Magento, Prestashop, OpenCart, Shopify, BigCommerce, Spree ✔ Front-end: HTML5, CSS3, SASS/LESS, Bootstrap, Javascript, jQuery, Angular. ✔ Node: Express, Meteor, Sails ✔ Python ✔ blade , Jade , Smarty ★ love Your Work means You Are Special ! ★ Available to work on big projects, on-going projects , and quick modifications. Please feel free for a friendly talk

    Groups: Bluehost Developers and Designers, Corona Labs...

    Associated with: PalPHP

    $40.00 /hr
    450 hours
    5.00
  5. Dat Nguyen

    Dat Nguyen Agency Contractor

    Magento Expert, e-commerce and more

    Vietnam - Last active: 8 hours ago - Tests: 9 - Portfolio: 11

    Top Rated Odesk's Freelancers!!! SEO and expertise for Magento platform. I had 8 years working with a lot of projects built base on PHP and Mysql and 4 years working based on Magento platform. I have some portfolios and built a lot of Magento sites. My works focus to customise Magento extensions, build theme, create custom extension, import/export, data and more...

    Groups: Bluehost Developers and Designers

    Associated with: X Magento

    $38.89 /hr
    4,040 hours
    4.88
  6. Jaime Tanori

    Jaime Tanori Agency Contractor

    Full Stack Javascript Developer

    Mexico - Last active: 4 days ago - Tests: 3 - Portfolio: 1

    My interests and passion lies in finding new forms of creating amazing software, providing a great user experience by the application of advanced programing techniques and data structures. I consider myself a team and solo player, I have been involved in any kind of projects and in a wide variety of roles, I have been coding, managing teams, managing clients and development cycles, QA, automating QA testing and many more. Javascript, Backbone, Node.js, Expressjs, Grunt, Gulp, Google Maps and other Google APIs (places, directions, +, etc), Parse.com, Mandrill/Mailchimp APIs multiple social frameworks (Facebook, Twitter), truly hybrid mobile applications, mobile development with Swift (Sorry no Objective­c). I do other languages and technologies but I mainly focus on Javascript, however it is usual to find me doing other things with Raspberry Pi, Python, MongoDB, Arduino among others.

    Associated with: MktApps Agency

    $45.00 /hr
    2,643 hours
    4.97
  7. Mohammad M.

    Mohammad M.

    WordPress, Responsive Design, HTML, CSS, JQuery, PHP, Bootstrap Expert

    Bangladesh - Last active: 13 days ago - Tests: 8 - Portfolio: 7

    Quality web Designing and Development is my main motto for my valuable Clients.Working with my clients is a great fun for me. I enjoy it. PHP & Mysql, JavaScript, Jquery, Ajax, Json, HTML5, CSS3, Photoshop cs3 are my base.I have worked with PHP frameworks and on many eCommerce sites. I have also extensive experience on developing WordPress themes and designing responsive layouts.

    $16.67 /hr
    641 hours
    4.97
  8. William Souza

    William Souza

    Java Expert (top 1% Advanced Java)!

    United States - Last active: 28 days ago - Tests: 6 - Portfolio: 1

    I love challenges and low-level programming that involves the creation of API's, system's core, math, advanced algorithms, code optimization, artificial intelligence, bits & bytes, debugging other people's code (even without documentation) and everything that involves lots of thinking. I am a hardcore programmer and I code for fun at my free time to keep in touch with new techonologies :) My core experience in the last years is Java (I started with Java since the 1.1 version! pre-swing and with Microsoft Java SDK!), but I've already programmed in a huge variety of languages, like: ASM, PHP, C/C++, C#, VB, SQL, Lua, , etc. I speak "computer", so if you have a bug and you don't have proper documentation, don't worry, I will fix it!

    $77.77 /hr
    752 hours
    4.37
  9. Damian H.

    Damian H.

    Project Management / Web Development

    Latvia - Last active: 1 month ago - Tests: 4 - Portfolio: 7

    Creative Media Producer Diploma, School of Audio Engineering, Zuerich Eight years I worked in Switzerland for web agencies. Three years I worked on the CRM of a middle size company (custom PHP framework). Worked on more than 100 projects mostly as Developer, but also as Project Manager and Designer. My English skills are good, I know also German and some French. Technologies - PHP - OOP / MVC - mySQL - CSS - HTML5 - Javascript - jQuery - AutoIt CMS - Joomla - WordPress eCommerce - Magento - Prestashop - Open Cart - WooCommerce Promotion - On-page Optimization - SEO Consultation http://www.singmyring.com Development, jPlayer Integration, ASP http://faircar.is Conversion PSD to Joomla, Car Rental Script Integration, Web Development http://www.schneiders-davos.ch Typo3-eCommerce-Module tt_shop Installation and Customization http://www.graubuenden.ch Web Development, Typo3 News Module, eBooking Integrations http://www.peronegro.com Project Management, Web Development, eCommerce, Blog, eBooking, Payment Integration http://www.kalk-ex.ch Project Management, Web Development, CRM System

    $50.00 /hr
    424 hours
    4.62
  10. Kevin P.

    Kevin P.

    Expert Developer WordPress, Woocommerce, CSS, HTML5, PHP

    United States - Last active: 5 days ago - Tests: 6 - Portfolio: 6

    I love languages! English is my first language but I am highly proficient in CSS, HTML, PHP, JavaScript/jQuery, WordPress, Woocommerce, custom HTML/PHP, and Joomla. Regardless of the type of development, I am passionate about providing first class results and excellent service. What I can do for you through the languages that I know... WordPress - Versions 2 - Current. When it comes to building a WordPress website, I have the skills. From designing custom loops to display specific categories, to ensuring that the look and feel is right, I deliver expert WordPress solutions to my clients. Woocommerce – custom theme development for WordPress ecommerce solutions, from themes to organization. I am very passionate about Woo development! If you want to sell it online and are familiar with WP then I can develop a perfect storefront for you. Big or small, regardless of the store size, let me Woo you! Joomla - 1.5 - Current, I have the experience to bring Joomla under control. From designing and developing custom themes to ensuring that your installation is SEO ready, I am a Joomla expert! CSS - Versions 1 - Current. HTML - All major versions from transitional to the latest HTML5. PHP - All major versions to Current. JavaScript - JavaScript and jQuery. If you need a website or website content, please feel free to contact me.

    $45.00 /hr
    935 hours
    4.92