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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, 588 AJAX projects are completed every quarter on Upwork.

588

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 4.66.

4.66
Last updated: August 1, 2015
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  1. Oleg Vakheta

    Oleg Vakheta

    Go/Golang/Perl/MySQL/JavaScript Developer, Linux Administrator

    Ukraine - Last active: 25 days ago - Tests: 9

    I love Go, Perl and Linux )) Have more then 7 years experience in Perl developing, more then 2 years in Go and I'm also passionate Linux administrator. Now I'm concentrated in developing for Web, using Go, Perl+fastcgi+nginx. I made many parsers, system scripts, web systems. My main directions in work: - Go (Golang), Revel, Martini, pure "net/http" for handling routes; - Perl developing ( web systems, scrapers/parsers, system scripts ); - Web developing, using: Perl, Javascript, Jquery, Ajax, HTML, CSS; - Linux administration; - MySQL server and queries optimization for high loading systems; - PostgreSQL - queries optimization, writing functions, triggers; - security audit; - SEO. I am open for new knowledge and critique.

    $27.78 /hr
    1,605 hours
    4.62
  2. 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
    6,865 hours
    5.00
  3. John B.

    John B.

    Microsoft Certified | Senior Developer | Team Leader

    Australia - Last active: 13 days ago - Tests: 9 - Portfolio: 3

    Over the last 15 years I have continued to develop my career, skillset, knowledge and experience. The last couple of years, upwork has introduced me to a great number of great people and projects. Two of these projects will be briefly outlined below. The first was designing and implementing a 4 million hits / day infrastructure to handle advertising banners. This client had a business requirement to greatly extend the reach of the live infrastructure. This project was completed in PHP / MySQL and is currently hosted on a cloud platform. This project scales automatically as required to handle any variation in the daily load. The final project was a hospital scheduling task. This client worked for a hospital and had over 30 different scheduling rules for every time-slot. The client used to do this manually and it took hours every week. I came up with a VBA based solution that would automate this task. On completion, the task took about 20 seconds to execute and correctly assigned all time-slots to the correct hospital resources. I would like to continue to be exposed to new and different challenges, that will further develop my skills and career. I also really enjoy making new contacts on the upwork network. I look forward to the many varied opportunities and roles that upwork offers.

    $44.44 /hr
    2,592 hours
    4.92
  4. Andrey Semenischev

    Andrey Semenischev

    Expert in PHP coding and MySQL optimisation

    Russia - Last active: 11 hours ago - Tests: 14

    I'm WEB programmer. I have more than 12 years expierence in site-creation field. I work with PHP, Smarty, MySQL, JS, HTML, Linux adminstration (httpd, mysqld, iptables etc.). I have developed and changed a wide range of websites and backend systems. I also have a rich experience in AJAX, OOP, software testing. Feel free to work.

    $38.89 /hr
    1,668 hours
    5.00
  5. Abhimanyu Singh Rathore

    Abhimanyu Singh Rathore

    Expert in WordPress/PHP/Facebook/LAMP Setup/Website Migration

    India - Last active: 3 days ago - Tests: 4 - Portfolio: 2

    Profoundly talented, qualified and dynamic Technical developer having extensive knowledge of various programming like PHP/Jquery and over 2 years of experience in handling a numbers of projects in social networking ,WordPress,PHP and Application Deployment on Web Server I have worked in all api's like facebook,google maps and many more. I usually available most of time and reply emails quickly, you can also skype me at abhirathore2006 Experienced With : Linode , DigitalOcean and AWS Server Depolyment WordPress Backup and Restore WordPress Migration to Other Server/Domain Blogs and Website Links- Owned by Me http://onl9class.com/ - WordPress Blog http://how2labs.info/ - Blogger Blog

    $9.00 /hr
    79 hours
    4.91
  6. Topher L.

    Topher L.

    Specializing in Server Administration, Configuration, and Deployment

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

    I have been in the telecommunications industry for over 13 years and have worked as a consultant to major Fortune 500 companies in the past for both business and technology needs. I have a vast knowledge of anything that relates to the internet, both hardware and software realms and have worked on a variety of projects ranging from the simple to large scale transition ones spanning months at a time. I understand a business' need to get projects done right the first time and have always exceeded my clients goals. If they're not happy, I'm not happy. I have a dual bachelors degree from the University of Colorado at Denver in Business Information Technologies and Business Management. My Masters in Business Administration is in International Business and most IT skills I have picked up on my own or through various courses either online or at the local community college. I look forward to working with you and completing any projects you may have, from the quick fix to an entire server farm rebuild. I am also a word class back end programmer familiar with MySQL, Bash, PHP, Perl, and Python. Please, no front end design work, I don't have an eye for creativity (unless it's something simple of course). I look forward to working with you and any projects you may have for me.

    $39.00 /hr
    466 hours
    4.98
  7. Alexey K.

    Alexey K.

    C# | ASP.NET |ASP.NET MVC | Umbraco Expert

    Ukraine - Last active: 2 days ago - Portfolio: 7

    I am ASP.NET/C# expert, rated in the Top 1% for .NET/C# skills, with 12 years experience in C#. I have more than 30 projects delivered on time and on budget. I have 18 years of experience in IT in big and small companies. I'm able to work effectively even with minimum supervision and guidance. I perform equally well as large projects in a team, as well as small projects independently. My favorite technologies are C# ASP.NET and Win Forms (web-based and desktop applications) and VoIP. I have more than 8 years experience in VoIP. I'm a citizen of Russian Federation

    $18.00 /hr
    509 hours
    4.97
  8. Mudit D.

    Mudit D.

    Core Php, mysql, codeigniter, javascript, jquery, ajax

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

    I'm a TOP RATED freelancer with 8+ years of experience in Php,mysql,html,css,javascript,jquery,ajax etc. I work as full-time freelancer so I'm completely dedicated to your needs and readily available over skype! I love to code and client satisfaction is my prime motto. I only bid when I truly feel I can provide the project at hand with 100% expertise. - I generally work in US time - I am not associated with any company and work individually with no further outsourcing your work - I am readily available over skype - I can speak fluent english - I am willing to establish long term work relationship

    $33.33 /hr
    3,675 hours
    4.99
  9. Luka Bartolic

    Luka Bartolic

    Developing and designing creative Web & Mobile applications.

    Croatia - Last active: 3 days ago - Tests: 4 - Portfolio: 10

    In my high quality and creative work on Web projects I commonly use PHP, CSS, Javascript, AJAX & HTML technologies. For the database implementation I use MySQL and for the efficient data transfer between database and application (or web site) I prefer to use JSON technology. I work hard on every project and always aim towards perfection of design and functionality. Besides being an experienced web application developer, I'm also an experienced designer. I love creating powerful and demanding designs, logotypes, banners, etc. using Photoshop and other tools. Besides web development, I have an experience in Visual C, C++ & C# programming languages. I develop mobile cross-platform applications, whether they are games or user applications that have a certain purpose. Great contribution to the high quality of the outcome product comes from discussing with other people too - for an example, while working I often discuss about better and nicer solutions with my friend and also a great web developer Davor Leric what fully increases a quality of the work. PRIMARY TECHNOLOGIES: MySQL, Javascript, CSS, AJAX, JSON, PHP, HTML, LUA, FTP, Microsoft Windows, Mac OS, Linux PROFESSIONAL SKILLS: Video Production, Web Designer, Web Developer, Graphic Design / Layout Art, Development of specific applications, Multimedia Designer, Game Development, Logo Creation, Advertising Banners, Programming, Database Administration, Database Design, Client-Server Applications, Banner Ads & Icons

    $20.00 /hr
    22 hours
    5.00
  10. Alexey E.

    Alexey E.

    PostgreSQL Expert & Full Stack Web Developer

    Russia - Last active: 3 days ago - Tests: 10 - Portfolio: 6

    6+ years experience in web-development. 3+ years experience in Linux and PostgreSQL administration. Strong Math skills. Interested in big data processing/analysis, highload projects, data mining, AI, applications security. PHP, Zend Framework, PostgreSQL, MySQL, SVN/Git, Linux Administration, Performance Tuning, Database Administration, Payment Processing Integration, Octave, R, SMPP, Kannel, Usability Testing, jQuery, Twitter Bootstrap.

    Groups: Pinnacle Cart eCommerce Application, Zend Certified Engineers

    $30.00 /hr
    5,967 hours
    4.97