AJAX Developers & Consultants

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AJAX (shorthand for asynchronous JavaScript and XML) is a group of interrelated client-side web development techniques used to create interactive web applications or rich internet applications. AJAX is used by web applications to return data in the background without interfering with the display and behavior of the existing page. On Upwork, the world’s largest online workplace, companies hire AJAX developers to successfully complete jobs including site administration, video integration and submission forms.

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AJAX Job Cost Overview

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

Upwork AJAX Jobs Completed Quarterly

On average, 697 AJAX projects are completed every quarter on Upwork.

697

Time to Complete Upwork AJAX Jobs

Time needed to complete a AJAX project on Upwork.

Average AJAX Freelancer Feedback Score

AJAX Upwork freelancers typically receive a client rating of 4.63.

4.63
Last updated: May 1, 2015
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  1. Dmitry P.

    Dmitry P.

    Senior Ruby On Rails full stack developer

    Poland - Last active: 14 hours ago - Tests: 1 - Portfolio: 2

    I have perfect 5 star rating at another freelance site (elance.com) as well - http://goo.gl/A9OgE1 I've written my first program when I was 5 years old, for 9 years I'm doing it as my profession. I've started with PHP but for purpose of more productive work switched completely to Ruby On Rails 4 years ago and mastered my RoR skills for dozens of projects since then. I'm not afraid of challenges, very self sustainable and motivated, always deliver on time. My skills are: Program languages: Ruby On Rails, Node.js (for high load backends) Code management: Github / gitlabs Databases: Mysql, postresql, mongoDB Deployment: Heroku, Capistrano, Docker, Debian-based linux distros Frontend: HTML5, CSS3, HAML, LESS, SASS, Twitter Bootstrap Javascript: Deep knowledge of pure JS, 9 years of experience with jQuery, dozens of plugins, can work with Angular.js, backbone.js (but not specialized in) Experience with API: Paypal, Twitter , Facebook , Google, Google Maps, Shopify, Netsuite, Constant Contact etc. Issue tracking and communication systems: Redmine, Github issue tracker, slack, basecamp Here are my latest project built by me: Huge highload online marketplace - http://goo.gl/oElo0L Shopify and constant contact integration - http://goo.gl/xoU02t Site monitoring solutions - http://goo.gl/dKwaej Unique project to stresstest websites - http://goo.gl/cFhrUD

    $45.00 /hr
    1,075 hours
    5.00
  2. Sophy Ung

    Sophy Ung

    Ruby/Rails/JavaScript Developer

    Cambodia - Last active: 14 hours ago - Tests: 2 - Portfolio: 7

    I am among the top 1% of freelancers (https://twitter.com/odesk/status/364622388165492736) and a verified web developer on oDesk. I have more than 7 years of experience in software engineering, particularly web development. Over the last 6 years I have developed a variety of business applications using Ruby, Rails, JavaScript, PostgreSQL, MySQL, MongoDB, Redis, Amazon EC2 and Heroku. I am interested in building quality software. I do not write code that just work, but also well designed, easy to understand, maintain and extend in the future by using test-driven development (TDD).

    $100.00 /hr
    4,932 hours
    5.00
  3. Christopher James

    Christopher James

    PHP Web App Developer: Any Framework, APIs and UI. 15+ years (USA)

    United States - Last active: 3 days ago - Tests: 6 - Portfolio: 12

    Since 1998 I have developed dozens of web applications focusing on a wide-range of industries including custom search engines, affiliate marketing, real estate solutions and worker safety. As an autodidact, I pride myself on learning new technologies and continually improving my skill-set. As a freelancer, I believe in professionalism, clean code and representing my craft to the highest degree possible. On the server-side, Laravel is my current PHP framework of choice, although I am comfortable working with Zend, CodeIgniter, Cake and Yii. For the database layer, I have 14 years of experience with MySQL. On the client-side, I prefer jQuery, Backbone and Twitter Bootstrap. Although I am not a graphic designer, I know my way around the Adobe software suite. I write standard compliant HTML5 and CSS3. I have an eye for useable, clean and obvious functionality. I have experience with many APIs, including Amazon, Box.net, Infusionsoft, Facebook, Twitter, PayPal, eWay, Authorize.net and Google. I can write APIs from scratch and give your application a RESTful interface. I am seeking opportunities to build custom web applications from the ground up or taking an existing code base and improving upon it.

    $110.00 /hr
    6,693 hours
    5.00
  4. Emil Ajdyna

    Emil Ajdyna

    Full-Stack JavaScript Developer

    Poland - Last active: 1 month ago - Tests: 9

    I am seeking opportunities to build robust, well tested front-end solutions that require a lot of JavaScript. Here's a short list of bigger projects I have worked on over the last few years: - ING Developing a single page banking application in Backbone/Marionette. We're also using jasmine, karma, nodejs, express.js, gulp, requirejs, d3.js, jquery and many more. I'm a technical team leader of one of the Scrum teams, responsible for the transfer's section of the app. - William Hill William Hill is one of the largest bookmakers in the United Kingdom. I have developed a wide range of websites that required a lot of front-end scripting. I had a chance to work on a truly scalable solutions as the websites were in 24 languague versions. - AQA AQA is one of five Awarding Bodies which are recognised by the regulators of the public exams systems for England, Wales and Northern Ireland. I had the privilege of working in the AQA office in Guildford directly with the kind and professional AQA team who had a really positive attitude about the project. My work focused mainly on the implementation of a cut-up, which involved converting an HTML and CSS template into the proper syntax for the CMS, provided by a third-party company whilst reporting to the Project Manager for AQA's project.

    $40.00 /hr
    548 hours
    4.98
  5. Dorin Duminica

    Dorin Duminica

    Software Developer

    Romania - Last active: 1 day ago - Tests: 12 - Portfolio: 1

    Over the past 6+ years as a Delphi developer I have worked on database, desktop and web applications. I'm proficient in Delphi(version. 7 to 2010) and PostgreSQL. I have a very good analytical thinking and elegant taste for user interface. I also have experience with RTL, VCL(shipped, DevExpress, TMS), OOP, SQL. I'm constantly doing my best to improve my skills and learn new technologies.

    $38.89 /hr
    8,638 hours
    4.90
  6. Oscar Diaz

    Oscar Diaz

    CakePHP Developer

    Colombia - Last active: 14 hours ago - Tests: 4

    Within my professional career, the last 4 years have been dedicated specifically to focusing and improving my skills on building reusable, efficient, and attractive tools in CakePHP. Through this process, I have attained knowledge vital to understanding CakePHP's most essential functionalities. This knowledge has allowed me to become well versed in the dialogue between JQuery and CakePHP. This, then, has given me the skills to build helpers and components that when applied to your needs, can become the voice that takes form as your ideal problem solver Why? Because I will listen to you. I will ask questions. I will understand what you need and I will provide you with a clean and efficient code.

    $44.44 /hr
    3,340 hours
    5.00
  7. Valery V.

    Valery V.

    PHP / MySQL / AJAX / Smarty / Joomla / SocialEngine / WordPress dev

    Ukraine - Last active: 25 days ago - Tests: 4

    I am experienced full stack web application developer(over 8 years). I’ve created a number of complex systems including dating sites, social networks, e-commerce sites, inventory management systems, scheduling systems, forum applications, and internal organizational systems. I have Master Degree in Computer Sciences and strong technical background as well as a keen eye for design. My feedback is 5 stars because: • I always stick to deadlines, • I have an excellent communication skills, • I'm available almost 24/7 via Skype, • I have a stable internet connection, • I love to turn clients ideas into reality. Looking forward to a long term relationship.

    Groups: Bluehost Developers and Designers, SocialEngine

    $40.00 /hr
    3,884 hours
    4.87
  8. Evgeny Bartashevich

    Evgeny Bartashevich

    PHP, MySQL, ajax, joomla, drupal, yii developer

    Russia - Last active: 14 hours ago - Tests: 4 - Portfolio: 3

    At a glance, I have experience in following areas: Yii1, Yii2, Phalcon, Joomla,Javascript, jQuery, Css3, Html5, Twitter Bootstrap, Sphinx, Redis Have a lot of experience in developing Joomla extensions, Joomla templates, developing SOAP services and clients, developing web applications using Google and Yandex services (including Google and Yandex Maps), authorization / authentication with openID / Oauth, Twitter, Facebook services. Have some experience with Drupal and Ubercart, developing Drupal & Ubercart modules Frameworks used: Joomla, Drupal, Yii. Have experience with payment gateways : Paypal, Google Checkout, Authorize.NET Some of my projects are: Yii: http://spekfy.com (in progress) Yii2: http://defectpro.com.au/defectone/ (in progress) Joomla sites: http://quaakin.com http://zhivoepole.ru/ (russian) http://legalite.ru http://urcatalog.spb.ru/ (contains custom developed modules and components)

    Groups: Bluehost Developers and Designers

    $35.00 /hr
    3,581 hours
    4.95
  9. Evgeny S.

    Evgeny S.

    AJAX, C++, Python, C#, Client-Server

    Russia - Last active: 1 day ago - Tests: 4 - Portfolio: 1

    I am independent C++/Python/C#/Java developer and I am looking for the opportunity to design and build a system from the ground up for you. I have experience with following technologies: - C++, Python, JavaScript, C#, Java, Scala - Nginx, Gunicorn, Gevent, Django, Flask, jQuery, Twitter Bootstrap, Apache. - MS SQL, DynamoDb, Amazon SDB, MySQL, Redis, SQLite, NoSQL. - Linux, Amazon EC2, SQS, SNS, S3. - Win32 API, Android, NDK, GTK, HTML5, WinForms, MFC, VCL - Git, SVN, Mercurial. I'm also eager to extend my experience in cutting edge technologies and programming languages like Rust, Golang, Erlang, Haskell...

    $50.00 /hr
    2,285 hours
    5.00
  10. Aleksey S.

    Aleksey S.

    C++/C#/.NET/web developer, algorithms/financial/math expert

    Russia - Last active: 4 days ago - Tests: 9 - Portfolio: 12

    I'm a software/web expert developer/architect with 10+ years of experience, including: - software development: .NET, C#, VB, C/C++ (MFC, STL, ATL, COM, GDI/GDI+, OpenGL, DirectX), - web development: both reach front-end and complicated business logic, ASP.NET/C#/VB/LINQ, HTML/CSS(tableless design)/JavaScript/AJAX/jQuery/ExtJS, SilverLight, PHP/MySQL, Flash/ActionScript, - financial software development: real-time algoritmic trading, historical data processing, stocks/indexes/bonds/derivative instruments/complex contracts/etc, integration to financial market broker's APIs: NinjaTrader, Interactive Brokers, CQG, etc, - math-intensive projects: complicated algorithms, reverse engineering, scientific research, Artificial Intelligence (AI) based methods. My objective is to provide high-quality services in the IT area. I'm self-motivated to do more than just simply do my job: I pay attention to customer and end-client needs to follow it better, try to predict future possible difficulties in advance and avoid them, able to make suggestions to improve project workflow and functionality, able to manage team and assure source code quality, able to work under different conditions including strong time and budget constraints. Regards, Aleksey.

    $33.33 /hr
    12,462 hours
    4.59