Javascript Programmers and Developers

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Since 1995, Javascript has grown to be one of the most frequently used computer programming languages. It’s a multi-paradigm programming language that can be used for websites, PDF documents, games and desktop widgets. On Upwork, the world’s largest online workplace, companies and individuals hire skilled Javascript developers to create software solutions and front-end applications.

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JavaScript Job Cost Overview

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

Upwork JavaScript Jobs Completed Quarterly

On average, 4,736 JavaScript projects are completed every quarter on Upwork.

4,736

Time to Complete Upwork JavaScript Jobs

Time needed to complete a JavaScript project on Upwork.

Average JavaScript Freelancer Feedback Score

JavaScript Upwork freelancers typically receive a client rating of 4.68.

4.68
Last updated: May 1, 2015
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  1. Franco T.

    Franco T.

    Senior Software Engineer

    Australia - Last active: 3 days ago - Tests: 6 - Portfolio: 1

    After my Master Degree, I have been working for 21 years in the ICT field, spreading in many industrial sectors and covering several roles. The skills I’ve gained, leveraged by a genuine passion, led to first level achievements in all projects I handled. Important international experiences complete the professional profile.

    $111.11 /hr
    0 hours
    0.00
  2. Hen S.

    Hen S.

    Web Developer

    United States - Last active: 22 days ago - Tests: 1

    I am currently a student at the University of Michigan - Ann Arbor pursuing a BS in Computer Science. I have extensive web development experience. I am very familiar with HTML, CSS and Javascript (jQuery). I have used Bootstrap a lot. I know and stick to good design principles. My back-end experience includes Python (Flask) and PHP (Wordpress). I have experience with SQLite, MySQL and PostgreSQL. I have extensive experience traversing and scraping data from web sites using Python (beautifulsoup & scrapy) and Java (jSoup and HtmlUnit). I currently working part-time as a web app developer for the University of Michigan College of Engineering and am looking for more web development work to do in my spare time. I am a native English speaker. I am always available to speak and meet on Skype.

    $35.00 /hr
    78 hours
    0.00
  3. Proskuryakov Ivan

    Proskuryakov Ivan

    Software Architect

    Russia - Last active: 4 days ago - Tests: 2 - Portfolio: 2

    Software Engineer specialising in Information Systems with extensive experience in the full cycle of the software design process including requirements for definition, prototyping, proof of concept, design, interface implementation, testing and maintenance. Technologies - Symfony2 \ Magento \ ZF \ Wordpress - AngularJS \ jQuery \ Javascript \ Bower \ Grunt - Doctrine \ SQL \ MongoDB \ MySQL - TDD & BDD \ Behat \ Karma \ Travis - Apache \ Varnish - E-commerce \ SEO \ Marketing - Mac OS \ Linux \ Windows \ iOS \ Android - PhpStorm \ Netbeans \ Eclipse \ xCode \ ADT - HTML5 \ HTML \ CSS \ 960 grid \ MediaQueries \ Bootstrap - Design \ Usability \ Prototyping \ Photoshop Specialities - Backend&Frontend development \ Product manager \ Project management \ Designer Github: https://github.com/ivanproskuryakov LinkeIn: http://ru.linkedin.com/pub/ivan-proskuryakov/31/200/316 Website: http://www.magazento.com/

    $33.33 /hr
    584 hours
    0.00
  4. Eric C.

    Eric C.

    D3 Data Visualization Expert

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

    I have 15 years of experience developing interactive web-based platforms and my extensive academic work has focused on data visualization and interface design. An expert in all things HTML5, I specialize in using D3.js to develop engaging, interactive experiences. My work history includes creating rich web applications and visualizations for Fortune 500 corporations (Ernst & Young, Abbott Labs) and world renowned universities (Case Western, Boston Univ, Tufts). My academic degree's have focused on usability and data visualization, having passed PhD qualifying exams in human computer interaction and algorithms. Whether you know exactly the type of visualization you want or just have an idea and need some guidance, clients can rest assured that I will work with them every step of the way to turn their idea into a polished product.

    $80.00 /hr
    12 hours
    0.00
  5. Rogerio R.

    Rogerio R.

    Hardware/Firmware/Software Engineer

    Portugal - Last active: 11 days ago

    I am a 40-year old electrical engineer with a passion for sophistication and innovation. I have a lot of experience in many areas, a result of both my professional career as well as my own personal projects. Detailed profile information can be found at http://profile.rilhas.com I can design, test, and manufacture hardware (including PCBs) using microcontrollers, FPGAs, USB, UART, I2C, and many more, and integrate them with computers, embedded systems, mains power, motors, various sensors, etc.. It is not uncommon for hardware projects in which I’m involved to incorporate both firmware and software, or even connect to the internet or with mobile phones. I have a lot of experience in the PC world, both as a user and as a developer. I have developed high density ISDN telephony application servers (IVRs) for the main Portuguese telecom operator, with an installed base of over 2000 channels, including a voice mail system complete with voice and text fault-proof database. I have developed a large number of computer systems, both servers and clients. My work with IVR's later included testing and using various ASR and TTS technologies (for automatic speech recognition and automatic speech synthesis from the major providers like Loquendo, Nuance, Philips), applied to various areas from the IVR system themselves (directory assistance, flight booking, and more), a help support system for the elderly (consisting of an emergency telephone help server for the national Red Cross), all the way to systems for the hearing impaired (integrating with JAWS screen reader, for example). I have worked with a team to develop a tool for airport management systems, where my contribution was the development of a complete graphics subsystem based on OpenGL, which is being used up to this date (more than 10 years later), due to its capabilities not having yet been surpassed by the competition. I've developed technology to analyze video images and detect a large number of situations, including FOD at an airport in Açores, intrusion detection, early fire warning systems (marketed as CICLOPE), fire prevention systems at PORTUCEL (one of the main producer of paper and other products), illegal car parking, subterranean bus parking, automatic lane management (and infraction detection) on the 25 de Abril Bridge, and many more. I also developed technology to monitor and track bird movements using radar data. A first version used the radar image, and a more recent version uses the raw radar data (captured using a high speed data acquisition system that I also developed specifically for the radars being used). Since this system requires the display of large amounts of data (images with 30+ MPix) I also developed the visualization component (based on OpenGL). I also have some experience in CAD modeling (owing mainly to the fact that I've owned a 3D printer for several years), with which I have created numerous models for small production runs of plastic objects, mainly to assist with electronics projects but which I have also used successfully to create inexpensive plastic connectors and other components for a company that manufactures and installs solar pool heating systems, including automated 2" valves. I’ve also created custom shaped plastic cookie cutters for my wife and toys for my son. :-) I've produced several promotional 3D videos for a few companies, and I also recorded and produced music albums for a number of artists. The systems I have developed in the past make use of (of have integrated with) a wide range of languages, systems, and technologies, including C, C++, C#, JAVA, J2ME, Android, Javascript, Ruby, PIC 10/12/16/24 assembly, i386 assembly, MMX/SSE2, Verilog, TCP/IP, UDP, OpenGL, USB, WiFi, Bluetooth, Raspberry Pi, BeagleBone Black, Windows, Linux, POTS, ISDN, ASR, TTS, among many others. Many of the projects I've worked on have included other people, and I have been the project manager on most of them. For the larger projects where I was not the project manager (like those involving airport security, for example) I was the team leader of the corresponding project component. Given my extensive experience with complex and innovative projects (where a solution is not always obvious from the start and a great deal of creativity is need as the project progresses), I have also developed good skills and intuition for preventing and detecting bugs, both at a code testing stage as well as (more importantly) at a design or specification stage. These skills have proven crucial over the years, and I think that the success of all the projects I worked on depended heavily on them.

    $40.00 /hr
    67 hours
    0.00
  6. Tobias M.

    Tobias M.

    Software-Developer (PHP, MySQL, Javascript, AJAX, Symfony, jQuery)

    Germany - Last active: 23 days ago - Tests: 4

    Since 2006 I implement PHP/MySQL Database Applications - starting with the simple CMS-Website over Online Shops with backend interface to existing software, ending with high-demanding customized business applications - with established languages and techniques like XML, HTML, CSS, AJAX and Javascript and several CMS- and E-Commerce systems as well as Frameworks. In the last years Pimcore, AngularJS, Symfony2 and Knockout were my regular tools of occupation, but I'm able to quickly read myself into other systems. Also I was able to extend my knowledge about Mobile Development with Objective-C for iPhone/iPad/iPod-Apps, as well as Java for Android. In addition to that I realized several Database Publishing projects – automatized catalog production - with direct, standardized PDF- Creation or with Indesign-Plugins e.g. Werk II's priint:comet oder DATAFORM.

    $49.00 /hr
    61 hours
    0.00
  7. John Allen

    John Allen

    Front End Web Developer

    United States - Last active: 10 hours ago - Tests: 5

    I am a front end web developer specializing in responsive design, wordpress theme development, and PSD to html/wordpress conversions. I take pride in writing clean, well commented, code that adheres to all of the latest web standards. Technical Skills: - HTML - CSS/SCSS - Responsive Design - Javascript/jQuery - Wordpress Theme Development - PHP - Git

    $35.00 /hr
    17 hours
    0.00
  8. Edmond B.

    Edmond B.

    Software & Web Application Developer

    United States - Last active: 4 days ago - Tests: 3 - Portfolio: 1

    A developer with many years of experience building and supporting software and systems for small business and enterprise clients. In addition to contract web and software development, I have a professional background in Systems Administration and security. This allows me to leverage a holistic level of understanding and experience across your entire technology stack. Languages: Python, C++, HTML/CSS, Javascript. Specialties: Flask application development. Linux systems administration, strong Linux/Bash command line skills. Well versed in open-source tools and the OSS ecosystem, security best practices & hardening, authentication, MongoDB and MySQL databases, REST APIs (particularly Twitter), nginx, server scripting/automation, server deployment, usability and design concepts, and full-stack web application deployment.

    $33.33 /hr
    166 hours
    0.00
  9. Uladzimir L.

    Uladzimir L.

    Fullstack javascript developer

    Belarus - Last active: 1 day ago - Tests: 3

    Hi! My name is Uladzimir and I'm reliable and highly skilled fullstack javascript developer with over 5 years of experience in IT and more than 2 years in javascript. Right now my main focus is: - Frontent: AngularJS(code contributor), Backbone.js, React.js - Backend: Node.js, io.js - Mobile development: Cordova/Phonegap, Ionic framework As well I took part in architecture development of several distributed, scalable and high-loaded solutions like credit history management system and airfare search engine. In my free time, I like to work on my own projects, that's why I can give you some advice for your product. I always try to keep my hand on the pulse of technologies and play with some not mainstream technologies like Scala, Golang etc. I look for new challenges and great opportunities to design and develop different projects. I always try to keep my customers happy. I do opensource a bit. You can check out my github account: https://github.com/lugovsky As well you can check out my LinkedIn profile: https://www.linkedin.com/profile/view?id=301319723 Feel free to contact me, you won't regret :).

    $55.56 /hr
    30 hours
    0.00
  10. Eric Adem

    Eric Adem

    Software Developer

    United States - Last active: 4 days ago

    I have been doing software development for over 25 years and during that time, I have worked on many projects in different industries for a wide range of clients. I have worked on computer games, business software, e-commerce, database apps, mobile phone apps, websites and more. I have built up a core list of clients who continually call me for repeat work. I feel that my greatest strength lies in the process of creating a software solution from start to finish. I enjoy being a part of the requirements analysis process, discussing needs with a client and determining how software technology can be suited to fit those needs. I also enjoy the technical design and implementation phases, seeing a project come together and delivering it to the client in milestones. I maintain clear communication throughout a project, making sure that I am on the same page with the client at all times. I am very honest about my skills and ability to complete a project. I'm not one of those cut-and-paste bidders who tries to bid on as many jobs as possible. I spend a great deal of time weeding through job listings to make sure I'm absolutely qualified for a job before I submit a bid on it. I don't want to waste my time or yours. Thank you for your consideration and I look forward to working with you. Please message me if you have any further questions.

    $80.00 /hr
    0 hours
    0.00