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. Emil Ajdyna

    Emil Ajdyna

    Full-Stack JavaScript Developer

    Poland - Last active: 1 month ago - Tests: 9 - Portfolio: 2

    I am seeking opportunities to build robust, well tested front-end solutions that require a lot of JavaScript. Here's a short list of bigger projects I have worked on over the last few years: - ING Developing a single page banking application in Backbone/Marionette. We're also using jasmine, karma, nodejs, express.js, gulp, requirejs, d3.js, jquery and many more. I'm a technical team leader of one of the Scrum teams, responsible for the transfer's section of the app. - William Hill William Hill is one of the largest bookmakers in the United Kingdom. I have developed a wide range of websites that required a lot of front-end scripting. I had a chance to work on a truly scalable solutions as the websites were in 24 languague versions. - AQA AQA is one of five Awarding Bodies which are recognised by the regulators of the public exams systems for England, Wales and Northern Ireland. I had the privilege of working in the AQA office in Guildford directly with the kind and professional AQA team who had a really positive attitude about the project. My work focused mainly on the implementation of a cut-up, which involved converting an HTML and CSS template into the proper syntax for the CMS, provided by a third-party company whilst reporting to the Project Manager for AQA's project.

    $40.00 /hr
    548 hours
    4.98
  2. Andrey E.

    Andrey E.

    Web Scraping Expert and PHP Web Developer

    Russia - Last active: 5 days ago - Tests: 7 - Portfolio: 12

    I'm web scraping expert/full stack developer with 7+ years of commercial experience. I'm good problem solver holding M.S. in maths and computer science. Today I'm offering webscraping/php/javascript services as a freelancer. My main skills: • Web scraping, parsing, automation, data processing • Simplehtmldom, Goutte, Symfony Browser Kit, Cheerio, CasperJS, Regular Expressions, Xpath • PHP, JavaScript, Java, NodeJS, PhantomJS, LUA • HTML5, CSS3, LESS, Bootstrap Framework • MySQL, MongoDB, Redis • Memcached, ZeroMQ, ReactPHP • SocketIO, Websockets • REST, SOAP, XML, JSON • Matlab, Wolfram Mathematica • Jquery, KnockoutJS, BackboneJS, RequireJS • Prestashop, OpenCart • Experience working with APIs: Ebay, Spotify, Amazon AWS, Amazon MWS, Flickr, Facebook Graph, Vk.com, GitHub, Instagram and several others • Git, SVN • Apache, Nginx, Curl • Amazon AWS • Linux, Vagrant • Understanding of OOP principles and software design patterns • Teamwork experience My github account is https://github.com/256cats My blog: http://256cats.com/ Over the years I’ve developed a lot of web scrapers of different complexity mostly using PHP (simplehtmldom, browserkit) and NodeJS/PhantomJS (casperjs). Some were simple regex-based and others were complex distributed systems with multiple proxies and Amazon AWS support. Also I developed a wide range of websites using PHP, HTML, JavaScript, CSS and MySQL including several e-commerce websites (+ Prestashop, Opencart). I built sites both from scratch and using frameworks, developed custom modules and extended existing ones for my clients. I have experience in PHP/MySQL performance tuning. Last two years I was working as MMO game (Clash of Clans/Heroes of Might and Magic-like mechanics) logic/backend developer. I’ve implemented distributed message queues, realtime leaderboards with Redis, Mysql, PHP. Developed battle-related algorithms (game unit classes, attack/defend, shortest path, quadtree). Then I’ve done some frontend development, e.g. – developed embeddable javascript classifieds widget and fitness/health single page web application with realtime updates/notifications (HTML, CSS, JavaScript, Jquery, Knockout.js, MomentJS, REST, AJAX, Socket.io).

    Groups: Coding Champs

    $39.90 /hr
    156 hours
    4.98
  3. Daria G.

    Daria G.

    Back-end and front-end dev and photographer

    Ukraine - Last active: 6 days ago - Tests: 2 - Portfolio: 1

    I specialize on Ruby on Rails and front-end development. In spite of the fact I have got a degree in International Journalism and Translation, I worked as QA and IT Sales for total of 3 years (from 2008) and then moved to web development from Jan, 2012. I have performed both back-end tasks (from basic CRUD to making simple APIs or server scripts) and front-end (building static websites from scratch or developing views with twitter-bootstrap). I believe the experience is formed with the quality of the projects, you have delivered, and not with the years of sitting in front of the laptop. Specialties: ruby 1.9.2+, Ruby on Rails 3.0+, linux and MacOS X environment, unix-shell, Git, SQL (SQLite, MySQL, PostrgeSQL), HTML, Haml, CSS, Sass, Less, twitter-bootstrap, javascript, jQuery Here is link to my github profile: https://github.com/amseledka I do photographs and various design tasks in my spare time, as well as help my friends with Russian-Ukrainian-English translations. My flickr profile: http://www.flickr.com/photos/37859578@N06/

    $33.33 /hr
    1,793 hours
    4.61
  4. Rômulo S.

    Rômulo S.

    Software Developer - Python, Ruby, Java, JavaScript

    Brazil - Last active: 1 day ago - Tests: 4 - Portfolio: 8

    Senior software developer with a broad skill set. Very quick learner. I do my best to write beautiful, efficient, and thoroughly tested code. I've handled all kinds of code bases - small to large, simple to complex, ancient to bleeding edge. I'm comfortable with any modern programming task. I've been a Linux user for over a decade and I'm well versed in server administration. Available part time, 10-30 hrs/week @ EST+3. Currently looking for Python, Ruby, node.js, Java, C# and JavaScript jobs. Programming languages and frameworks I have worked with: Python - Django, Flask Ruby - Rails, Sinatra Node.js JavaScript - jQuery, Backbone, Marionette, Angular Java - Spring, Play .NET - C#, ASP.NET MVC PHP - Wordpress, Laravel, Silex, Symfony Shell scripting MUMPS - InterSystems Caché Databases I have worked with: MySQL Postgres SQL Server Ingres MongoDB InterSystems Caché

    $55.56 /hr
    336 hours
    4.98
  5. Dolly Aswin Harahap

    Dolly Aswin Harahap

    Full Stack PHP Developer, LINUX, MySQL, MongoDB, PHPUnit, Vagrant

    Indonesia - Last active: 2 days ago - Tests: 9 - Portfolio: 2

    I'm Zend Certified Engineer in PHP 5, Zend Framework 1 & 2. Have experience in LAMP about 9 years. And very familiar with UNIX environment. I use Ubuntu LINUX before and now I use Mac daily. I'm able to work with native PHP or use PHP Framework. I'm very experience in web application or creating an API for web application or use API from public API like Facebook, Google, Twitter, etc. I'm also experience in PHP Quality Assurance tools like PHPUnit, PHPCodeSniffer, PHPMD (Mess Detector) etc. And I'm also familiar with SCM (Source Code Management) like Git and SVN. Another skills I have are Doctrine ORM (I use this since 1.2 until Doctrine 2 now) and ODM, HTML5, jQuery, Apache, MySQL, sQlite, MongoDB, Vagrant, Zend Server, Zend Studio, and some Agile tools like JIRA, Continues Integration and Automation Build (e.g. Jenkins, Shippable) I also share my code with ZF 2 and MongoDB in github. You can check here https://github.com/dollyaswin/pyro/ So, please do not hesitate me. I'm experience on this field. And I'm Certified Developer. I'm very familiar with US Company, and my latest project is as Team Leader on US Auction Company. You can check my profile here So, please do not hesitate me. You can check my profile here http://www.zend.com/en/yellow-pages/ZEND010294 https://www.linkedin.com/in/dollyaswin https://github.com/dollyaswin

    Groups: Zend Certified Engineers

    $33.50 /hr
    3,854 hours
    4.64
  6. Adlai G.

    Adlai G.

    Mobile Apps -- Web Development

    United States - Last active: 1 day ago - Tests: 8 - Portfolio: 13

    I have a BA (with honors) from the University of Iowa (also double majored in Linguistics). I also have a Web Development Professional Certificate from Minneapolis Community and Technical College. I have been developing apps for the iOS platform since 2009. I have also worked on native Android apps, and I have worked on and created several cross-platform hybrid apps using Apache Cordova (or Phonegap) as well as custom hybrid solutions. I am resourceful and self-motivated when finding applicable solutions to programming problems (it's like a fun puzzle...). In the past I always focused on Apple platforms and was an expert on the now antiquated Macintosh Toolbox of the 1990's. I used C/C++ on these old generation Macs and on UNIX boxes while studying computer science (we also used early Java on the workstations). I still have a sweet spot for native objective-c development on iOS. Recent projects have included custom Cordova / Phonegap plugins, applications which make use of bluetooth iBeacons (as well as Gimbal BLE beacons), and in the last year I have worked extensively with Location Services including GPS functionality and Geofences. In the early days of iOS development I worked a lot with audio processing and muti-touch interactions. I never really set out with the intent to become a project manager, but I communicate well and it seems my role in many gigs recently tends to creep in that direction.

    $83.33 /hr
    1,554 hours
    5.00
  7. Richard H.

    Richard H.

    Web developer

    Hungary - Last active: 1 day ago - Tests: 2 - Portfolio: 15

    Since 2002 I've been developing web sites and applications. In the past years though I'm mainly working with Django and PHP as a self-employed individual. I try to learn as much as I can and look for challenging projects. I can handle anything website related task from creating a trivia website to a static portfolio. I have been using the following stack: EC2, Heroku, DigitalOcean MySQL, SQLite, PostgreSQL, MongoDB Python, PHP Django, Flask, Wordpress, Drupal, Laravel SASS, LESS Angular.js, Ember.js, jQuery, jQuery UI ... and tons of other third party libraries/frameworks.

    $33.33 /hr
    151 hours
    5.00
  8. Francesco M.

    Francesco M.

    BI Developer and some other nice things

    Poland - Last active: 1 month ago - Tests: 4

    I started my career as C++ developer, then I moved to Visual Basic and SQL, but when things are getting serious you start to use a real database, so I learn PL/SQL and from there I moved to Data Warehousing and Business Intelligence. Moving abroad was only the next natural step in my search for more interesting and challenging projects. I admit it, a girlfriend was a good reason too. I think I passed the test, if I still have no intention to come back to mamma. When I joined MicroStrategy I knew only that I enjoyed my time with the rudimentary BI tool I was using, I knew something more was out there. With my Oracle and programming background I started working on ETL and Data Modelling projects, but you don't do BI if you don't understand your customer's business. Finally a way to combine my job and my communication degree. In the last four year I have be travelling around the world working in different environments and having my part of fun doing it, and I was lucky enough to do it adding new experiences and skills to my curriculum. And a wife as well. And now? now I'm looking for the next step in my life.

    $111.11 /hr
    9 hours
    5.00
  9. Ronni S.

    Ronni S.

    PHP Hacker

    Denmark - Last active: 19 days ago - Tests: 4 - Portfolio: 6

    Skilled PHP developer with a passion for high quality code, (striving for SOLID) Looking for PHP and/or javascript projects. Not looking for design projects (anything that includes drawing photoshop and etc..). I have alot of frontend experience with responsive design, css3 but mainly avoid these jobs as it not my primary strength. I am a coder, not a designer.. If in desperate need or a bugfix, I can however help you in such a matter. Perfect php projects include unit testing, security and OOP. Have a look at my github page https://github.com/RonnieSkansing Skills ---------- Vanilla PHP Css, fluid/adaptive/responsive design, html5 features, cross-browser compliance. vanilla php, unit testing, composer, micro-frameworks, frameworks, cms and ecommerce. Unix-like OS's Web application security vanilla javascript, jquery, angular, npm, grunt, gulp, node.

    $49.96 /hr
    0 hours
    4.97
  10. Hamdan A.

    Hamdan A. Agency Contractor

    Experienced Web Developer

    Palestinian Territories - Last active: 1 day ago - Tests: 4 - Portfolio: 5

    My objective is to find a long term contract with a company who needs a rock-solid PHP/LAMP programmer. I have been a key contributor for several high-volume e-commerce websites over the past 10 years. My work has included open-source PHP5+ frameworks, such as CodeIgniter and Laravel. I am guru-level in HTML, CSS, Javascript, AJAX and Jquery, various payment gateways such as Authorize.net, Paypal, Plimus as well as other CMS and e-commerce systems including WooCommerce, eCommerce and BigCommerce. I also have experience administering Apache, Nginx, SVN, MySQL, Linux, SSL, etc... My strengths are innovative thinking, resourcefulness, flexibility to accommodate your time zones, efficient code and ability to solve the most difficult tasks using the simplest solutions. Here is a list of all skills that I am very good at: ✔ Native PHP Development , Organised , OOP , and Commented clean code. ✔ WordPress: WooCommerce, BuddyPress, bbPress, Genesis, OptimizePress, ClassiPress, Thesis, PageLines, Gravity Forms ✔ e-Commerce: Woocommerce, Magento, Prestashop, OpenCart, Shopify, BigCommerce, Spree ✔ Front-end: HTML5, CSS3, SASS/LESS, Bootstrap, Javascript, jQuery, Angular. ✔ Node: Express, Meteor, Sails ✔ Python ✔ blade , Jade , Smarty ★ love Your Work means You Are Special ! ★ Available to work on big projects, on-going projects , and quick modifications. Please feel free for a friendly talk

    Groups: Bluehost Developers and Designers, Corona Labs...

    Associated with: PalPHP

    $40.00 /hr
    450 hours
    5.00