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. Konstantin S.

    Konstantin S.

    Senior Software Developer - ASP.NET MVC | AngularJs | Typescript

    Russia - Last active: 18 hours ago - Tests: 8 - Portfolio: 13

    9+ years of experience as software engineer. In those years, I had a few good opportunities to work with big companies and to help a few start-up companies and other medium sized mobile and web agencies. Last few years I'm developing web solutions for automation of business processes using C# and ASP.NET MVC or Java with Play! Framework with various front end frameworks (e.g. jQuery, AngularJS, KnockoutJS, Typescript etc) My key skills and abilities include(not limited to) - Desktop WinForms, Silverlight, WPF, WCF ADO.NET, LINQ, Entity Framework Castle Project, AutoMapper Unit Tests (nUnit, xUnit) 3d party libs: ActiveReports, Telerik controls - Web (frontend) Javascript, CSS3, LESS, HTML5 jQuery, AngularJS, KnockoutJS, Typescript, Masonry Twitter Bootstrap, Foundation - Web(Backend) ASP.NET, ASP.NET MVC, Play! Framework MS SQL, Mongo DB, Elastic Search, Memcached Microsoft Azure Cloud I always look forward to meeting new clients and helping them with realizing their imaginations and with full-filling their needs. I believe that is the best way to put myself in a good use for myself and clients. Thank you!

    $45.00 /hr
    7,551 hours
    0.00
  2. Raymond Doran

    Raymond Doran

    Senior Software Consultant

    United States - Last active: 29 days 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
  3. Stefan Knoch

    Stefan Knoch

    Expert Web Developer and Software Architect from Germany

    Thailand - Last active: 1 day ago - Tests: 7

    I am a creative and enthusiastic oop web developer from Germany with extensive experience in cms, ecommerce and website developing by working more then 6 years full-time for advertising agencies around Austria and Liechtenstein. I am capable of designing and developing database systems, frontend/backend architectures and programming professional web 2.0 w3c conform, cross browser compatible and seo optimized websites. I am also very fast at getting into new systems and fixing even the hardest bugs. I have much experience in several web developing areas: - website programming: html, css, js (jquery), seo, cross browser, w3c - cms developing: php, oop, mysql - database designing - architectur designing and planning - ui concepting - performance optimizing (mysql database, sql, php, js, http) - linux server administration (apache, nginx, debian, ubuntu) Frameworks - Jquery - Smarty - Zend - CakePHP - Yaf - my own performance focused lightweight oop framework I love to produce beautifully oop code and optimize performance even in the smallest corners. Im a perfectionist and i want to make me and my client satisfied and happy.

    $33.33 /hr
    50 hours
    0.00
  4. Grant Clark

    Grant Clark

    C#/SQL/SSRS/Lightswitch Developer

    South Africa - Last active: 4 days ago - Tests: 4

    After 15 years of being exposed to a variety of facets of the software industry I have settled down into a rhythm of specializing in delivering high quality, maintainable and quick-to-develop Line of Business solutions that are Bring Your Own Device (BYOD) friendly aka Cross-Platform Multi-Tier Solutions. Visual Studio LightSwitch and SQL Server Reporting Services are my combined favorite technologies to achieve this. I am focused on practicing Agile Methodologies in my work and thrive on good velocity through solid customer relationships whilst preferring a Test Driven approach to projects. I take a keen interest in ensuring I am proud of the products I develop whilst closely aligning this with the needs of the business I am serving. I enjoy working in and with flexible, friendly, courteous and professional environments and people. Working, quality software that delivers value using industry trusted technologies is my core focus.

    $40.00 /hr
    536 hours
    0.00
  5. Vasil Stoyanov

    Vasil Stoyanov

    Software Developer

    Czech Republic - Last active: 18 hours ago - Tests: 2

    A very early starter I wrote my first computer program aged 9, discovering a passion I keep and follow to this day. Afterwards, I enrolled in the best high school with focus on computer science in the country and started my first full-time software engineer job as a teenager. Since then I focused on the server-side and worked on a number of projects for customers ranging from small start-up companies to top-tier investment banks. I have also been responsible for setting up and maintaining servers and user interface development. Besides excellent self-learning skills and ability to work independently I also possess decent tech writing and strong presentation proficiency having been a trainer for Java and J2EE technologies for more than 2 years. I have also been active in the community, participating in university courses and given a presentation for the local JUG.

    $40.00 /hr
    10 hours
    0.00
  6. Janos D.

    Janos D.

    Java expert (web, desktop, mobile, server-side, cloud)

    Hungary - Last active: 18 hours ago - Tests: 2

    Although I am a new guy on oDesk I am an experienced freelancer, I have worked for years for big companies in Europe as a freelancer Java developer. I can help you: - planning, architecting and - building a new website for millions of users - organising and reviewing a team for you - and of course I can help you in development also #my-tags: Java, J2EE, Hibernate, Spring, Google App Engine, GWT, Javascript, Dart, Html5, Css3, Knockout, Angular, Polymer, Cloud, Android, C#, Azure Java: I have worked lots of years on the server side (Hibernate, Jpa, J2ee, Google App Engine, Spring, Sql, No-Sql) Web clients: I am experienced in a wide range of client technologies (GWT, Javascript, Knockout, Html5, Css, JQuery, Dart, Angular, Polymer) Mobile: I will build you Android apps in Java and hybrid apps in Html5 Mobile optimization: I can help you to (re)build a site to be responsive that will work on all the devices Desktop: I have created several desktop apps with Swing and I had a few projects with Windows Forms. Technologies not in my main focus, but worked with: C#, Azure, PHP, OpenCart, Liferay

    $38.89 /hr
    492 hours
    0.00
  7. Rogerio R.

    Rogerio R.

    Hardware/Firmware/Software Engineer

    Portugal - Last active: 18 hours 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
    56 hours
    0.00
  8. Guro B.

    Guro B.

    Frontend developer

    Russia - Last active: 29 days ago

    Hello everyone, who reads this. Last of time I'm working like frontend developer, I have wide experence in this. I worked with jquery, node.js, mootools, angular, vanilla javascript, d3, with the most famous javascript frameworks. I know python and such framework like django, a little - pyramid. My interests are system programming, machine learning and CV, but in this subjects I'm not so good as in frontend developing. I'm using Gentoo + xmonad. I know also Haskell and Rust, I have experience with Erlang, Objective-C, Cordova, MoSync, C, C++, CUDA. Thank you

    $45.00 /hr
    0 hours
    0.00
  9. Xin Jin

    Xin Jin

    Senior Programmer For Financial Apps

    United States - Last active: 5 days ago - Tests: 4

    Hi, I currently work and reside in NYC, USA. I have over 14 years of experience developing financial applications. I hold BS and MS degrees in Computer Science from Columbia University. I'm a Sun Certified Java Developer and J2EE architect. I'm also a CFA charter holder and have been mostly working in the financial industry for front-office trading and risk management in NYC, Tokyo and Shanghai. I have worked with both equities and fixed income asset classes and I am very knowledgeable with derivatives. My technical skills include Java/C++, Excel/VBA, ASP.NET, and SQL. I've worked on both web and desktop applications. I'm available for part-time projects initially. But I want to gradually convert to be working full-time on oDesk. Thank you.

    $100.00 /hr
    0 hours
    0.00
  10. Rob Levy

    Rob Levy

    Data and Visualisation Engineer

    United Kingdom - Last active: 20 days ago - Tests: 3

    Electronic engineer by training, coder and data whizz by professional background. I've got razor-sharp SQL, VBA, Excel, Python and Javascript skills. I'm also handy with stats, econometrics and data visualisation. I've completed large-scale serious jobs for large-scale serious clients (Citibank, Allianz Global Investors, Vodafone, the UK government) who are in a position to recognise when a job has been well done. I think what sets me apart from other code and data ninjas is my ability to communicate with the non-technical world to make sure that what gets done is what the client actually wants.

    $50.00 /hr
    0 hours
    0.00