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. Andrew A.

    Andrew A.

    Senior Software Engineer

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

    10+ years of experience in software development. Strong skills in web development, database development, object oriented programming and design. I participated in several software startups, including my own. My key technology skills are: Java SE, Java EE, Spring, Hibernate, JavaScript. Also, from time to time I've been working with: Python, Perl, Bash, .NET, ActionScript, PHP, C/C++. (And it's not a problem for me to learn any new thing). I'm able to work on software projects from scratch until the final delivery. I can do budget estimations of the entire software project. I can manage the team. I can understand and implement the most difficult parts of the software systems.

    $35.00 /hr
    1,163 hours
    0.00
  2. Lewis Sellers

    Lewis Sellers

    Senior Developer

    United States - Last active: 25 days ago - Tests: 1 - Portfolio: 2

    I have a degree in Computer Science and have been working as a contract web developer for quite a few years now. I've worked in many languages and technologies over those years and, given the proper frame of mind and incentive, I'm perfectly fine with learning something completely new to get a project done. Recently I've been moving into iPhone and Android Development but have also spent a lot of time working with PHP, MySQL + Postgresql, Laravel, Ajax (Json), JQuery, MCV + Activerecord patterns, MongoDB/Map-reduce, Facebook/Twitter/Google social APIs and Twillo SMS APIs. Real estate is almost a specialty of mine: Specifically data-mining (including scraping) real estate information and working with IDX and RETS property feeds. In the past I've also spent a lot of time working in ColdFusion and with C++ COM objects. Basically a jack-of-all-trades full-stack developer.

    $33.33 /hr
    73 hours
    0.00
  3. Josh M.

    Josh M.

    Senior Software Engineer & Architect Specializing in .NET Technologies

    United States - Last active: 3 days ago - Tests: 6 - Portfolio: 4

    For 15+ years I have been developing software from all angles - back-end through front-end. I have worked with numerous languages, frameworks and tools but find myself happiest when working with the .NET Framework/C# - I have worked with the .NET Framework since it was first released. Over the past decade-and-a-half, I have proven myself a valuable asset to any team/project on which I have been placed. I have very strong development skills including .NET (C#), database design, UI/UX, front-end (HTML5, CSS3, JS), back-end (SQL Server, MySQL), web services/APIs, etc. I always end up being the go-to guy for other team members when they have questions and I'm happy to mentor more junior developers. I've worked on projects of all sizes ranging from small internal systems to large public-facing systems. I am constantly keeping up with the latest trends in software development and in my free time I usually have one or two personal projects going on. I tend to prefer working with C# but have also worked with Java/J2EE, Ruby on Rails, PHP, etc. I am open to other languages, technologies and frameworks - whichever is best for the job. I have strong front-end web development experience including working with 3rd party frameworks such as jQuery, jQuery UI, Knockout, Bootstrap and others. I have designed and built web applications from scratch and have also worked with designers to implement functionality based on pre-determined designs. I'm a hard working software engineer who prides himself on the quality and completeness of his work. I work efficiently while adhering to best practices and remaining mindful of performance, potential bottlenecks, memory usage, etc. I would be a great addition to any project as a single developer or as a new developer on an existing team.

    $90.00 /hr
    13 hours
    0.00
  4. Raymond Doran

    Raymond Doran

    Senior Software Consultant

    United States - Last active: 1 month ago - Tests: 1

    I am an experienced, motivated and detailed Software Architect / Engineer with a complete end-to-end understanding of the software development process. Over 17 years of professional experience in software development, technology support, and graphic arts. Software development skills include Rich Internet Applications and Web 2.0, Object Oriented Application Design (OOAD), including the use of the Unified Modeling Language (UML), SQL, JAVA (J2EE, Hibernate, Spring, Struts), JSP, ActionScript, PHP, EJB, C++, HTML, XML, BlueMartini, Design Patterns, and managing small development teams. The past 15 years of my career have been mainly focused on the Java family of technologies with a strong emphasis on distributed applications over the internet or corporate intranet. I have also spent the last 6 years with Flex and Actionscript front ends. The ability to speak comfortably in large groups, one on one with clients, or mentoring peers is a skill that I have been able to acquire as well.

    $105.56 /hr
    1,286 hours
    0.00
  5. John Cunningham

    John Cunningham

    Senior .Net Engineer

    United States - Last active: 10 days ago - Tests: 2

    Accomplished New York City based Technical Architect/Lead Developer with over 10 years of experience in all aspects of the system development life cycle including requirements analysis, design, development, testing, debugging, and deployment. Proven track record of implementing enterprise scale database-driven web applications with a focus on .NET and Microsoft technologies.

    $59.00 /hr
    12 hours
    0.00
  6. Tobias M.

    Tobias M.

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

    Germany - Last active: 27 days ago - Tests: 4 - Portfolio: 18

    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. Rogerio R.

    Rogerio R.

    Hardware/Firmware/Software Engineer

    Portugal - Last active: 2 days ago - Portfolio: 1

    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
    68 hours
    0.00
  8. Alexis Baroody

    Alexis Baroody

    Programmer

    United States - Last active: 1 month ago

    • Been professionally programming for 11 years • Experience with C/C++, Java, Javascript, Ruby, SQL • Managed and programmed projects that included building games, research, data collection • Rubymotion and iOS development expertise • Worked on Rails and Javascript web projects • Published iOS apps including the game Tilt Defense (itunes.apple.com/app/id923794667)

    $35.00 /hr
    21 hours
    0.00
  9. Mitchell Langlois

    Mitchell Langlois

    Junior Rails & UI/UX Developer

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

    I have designed and developed a variety of websites using HTML5, CSS3, Ruby, Ruby on Rails, Javascript, JQuery, Backbone.js and many other modern web technologies. I also have a bunch of experience designing and working with databases and am very proficient with SQL. I love to build new websites from the ground up using my already acquired skills and trying out new technologies when acceptable. I am seeking opportunities to build modern, fully-functional websites from start to finish. I prefer to work in small teams or alone.

    $35.00 /hr
    563 hours
    0.00