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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, 4,622 JavaScript projects are completed every quarter on Upwork.

4,622

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: June 1, 2015
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  1. Edmond B.

    Edmond B.

    Software & Web Application Developer

    United States - Last active: 23 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
    195 hours
    0.00
  2. Josh M.

    Josh M.

    Senior Software Engineer & Architect Specializing in .NET Technologies

    United States - Last active: 7 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
    21 hours
    0.00
  3. Timothy J Hays

    Timothy J Hays

    Sr. Software Developer

    United States - Last active: 5 days ago

    Tim Hays has experience developing over 80 published products in the areas of games, education, training, science, defense, and is a cognitive scientist as an advanced artificial intelligence expert and a published senior member of the IEEE with 2 patents awarded, both relating to AI design and display of intelligent characters in games.

    $84.44 /hr
    213 hours
    0.00
  4. Dino T.

    Dino T.

    JavaScript Developer

    Croatia - Last active: 1 day ago - Tests: 2 - Portfolio: 5

    Primary Skill: JavaScript, Angular, Node.js, Gulp, Karma/Jasmine, Protractor, HTML5, SCSS/LESS, TDD. Hi, my name is Dino I’m 24 and a web developer/problem solver currently based in Zagreb. I love building quality software and experiment with new technologies. My language of choice is JavaScript but I can also do some stuff with Ruby. I believe in Agile practices and TDD. What does that mean? It means I’m devoted to awesome tests and I don’t settle for anything less. It means my definition of '’refactoring’’ doesn’t consider only the code. Yes, I consider myself a pragmatic journeyman. I’m a fast adopter and I care about details. I like to know how things work internally, whether it’s a testing framework, an interpreter, or a webframework. I’m continuously working on improving my skill set which doesn’t only include the programming concepts. I absolutely love to hack on tools to make my environment more efficient (coding/non-coding).

    $33.33 /hr
    17 hours
    0.00
  5. Lewis Sellers

    Lewis Sellers

    Senior Developer

    United States - Last active: 1 month 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
  6. John Cunningham

    John Cunningham

    Senior .Net Engineer

    United States - Last active: 1 month 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
  7. Hen S.

    Hen S.

    Web Developer

    United States - Last active: 1 month ago - Tests: 1 - Portfolio: 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
  8. Vasil Stoyanov

    Vasil Stoyanov

    Software Developer

    Czech Republic - Last active: 4 days 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
    141 hours
    0.00
  9. Mitchell Langlois

    Mitchell Langlois

    Full-stack rails 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.

    $40.00 /hr
    618 hours
    0.00
  10. Daniel B.

    Daniel B.

    Full Stack Startup CTO: Coder | DevOps | QA | Cloud

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

    B"H I'm a software developer turned entrepreneur with an irrational desire to solve life's big problems using technology. I've been fascinated by programming and computers since age 14, and have a rich experience of over 15 years with a diverse set of software technologies. As CEO/CTO of a tech startup, I am the kind of generalist that is a jack of all trades and a master of all. On any given day of my week I need to be an excellent developer, tester, copy writer, marketing strategist, media expert, business and financial wizard, all while keeping the big picture and "vision" of the company in mind. Let me apply myself to your problem. Bring me onboard your team, and I will get the job done with spectacular results. I stand behind the quality of my work, the efficiency at which it is delivered, and the easy to maintain nature of my deliverables. SPECIALTIES Linux system administration (Ubuntu, Apache, MySQL, ElasticSearch, Sphinxsearch, RabbitMQ, ...) Clustered environments (CoreOS, Fleet, etcd) Containerization (Docker) Docker workflow design (containerizing environments for dev, staging & production for apps built in any language: PHP, Node, Ruby, Python, Haskell, ...) Cloud environments (AWS) Cloud migration (SoftLayer -> AWS, ...) Shell scripting (advanced Bash) Software development (PHP, C++, JavaScript, CSS3, HTML5) Configuration management (Puppet) Quality assurance (Selenium, PHPUnit) Continuous integration (Jenkins, Strider) Continuous deployment Monitoring and metrics (New Relic, Logstash, Kibana, Grafana, Graphite, Nagios, Seyren) User interface and user experience design (UI/UX) Product functional design and functional flow mapping Technical strategy Technical team building and leadership WORK ETHIC Development: Make it work, make it correct, then make it fast. Move quickly and break things, because better to get it into the user's hands than keep it in the engineer's head. Design: Less is more – remove decision points until it works like magic. Delight users at all costs with insane attention to detail. Quality management: Instrument all the things, since it's harder to improve what isn't being measured. If it's not being tested, it's already broken. Productivity: If it has to be done more than once, automate it; in a startup, don't automate for as long as you can. Refactoring should be opportunistic and shouldn't need management approval, because the broken windows syndrome in a codebase can bring a project to its knees. Technical strategy: Embrace valuable new things even if they're still half-cooked; the developers will usually work hard to smooth any bumps with surprising speed. Never throw out something that works just because something new came out; technology evangelism is an expensive sport. Management: Mentorship is key to developing the culture and organizational processes that will keep employees happy and increase their value to the company. Communicate the rules clearly, set the goalposts, then get out of the way and let the team shine. Exude passion or stay home. Leadership: Listen to and learn from everyone. When making decisions there is never enough information, and once there is it is usually too late. Grand plans tend to become obsolete before they are implemented, and old habits die hard; changes are most successful when they are small. KEYWORDS I've picked up many other skills over the years, so for easy reference and searchability on oDesk here is the keyword soup (in no particular order): ajax, json, api, html, css, smarty, zend framework, virtualbox, virtual machines, amazon cloud, dns, ftp, nagios, c++, eclipse, xdebug, software profiling, software optimization, software architecture, refactoring, software patterns, agile, test driven development, lean startup, minimal viable product (MVP), REST and RESTful design, software defined datacentre, continuous deployment, push to build, immutable infrastructure, redmine, project management, static code analysis, debugging, quality assurance, QA, testing, software verification, version control, subversion, power excel formulas, windows, macos, mac os x

    $111.11 /hr
    267 hours
    0.00