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

    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: 2 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
    153 hours
    4.98
  3. Daria G.

    Daria G.

    Back-end and front-end dev and photographer

    Ukraine - Last active: 2 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
    1,792 hours
    4.61
  4. Rômulo S.

    Rômulo S.

    Software Developer - Python, Ruby, Java, JavaScript

    Brazil - Last active: 1 day ago - Tests: 4 - Portfolio: 5

    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
    330 hours
    4.98
  5. Dolly Aswin Harahap

    Dolly Aswin Harahap

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

    Indonesia - Last active: 1 day 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
    3,852 hours
    4.64
  6. Francesco M.

    Francesco M.

    BI Developer and some other nice things

    Poland - Last active: 24 days 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
  7. Hamdan A.

    Hamdan A. Agency Contractor

    Experienced Web Developer

    Palestinian Territories - Last active: 24 days ago - Tests: 4 - Portfolio: 7

    Talent is just a gift reflected as a quality I have 10 years of web development experience. Here is my key skills that I am very experienced in each : ✔ 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
    449 hours
    5.00
  8. Gaston Claret

    Gaston Claret Agency Contractor

    Game Developer / Android / iOS / WP8

    Argentina - Last active: 2 days ago - Tests: 4 - Portfolio: 6

    Hello, my name is Gaston Claret and I'm a 24 year old a software engineer from Buenos Aires, Argentina. I work on Unity to create games, my passion! I love a challenge, and I'm always trying to create quality work for my customers. In the past, I've worked for over 2 years as a C# / .NET developer, working for a big enterprise web application. I'm very passionate about my work, and always eager to learn new technologies. I have lived in Toronto, Canada for 3 years, so I am both fluent in English & Spanish. I have knowledge in the following: ✓ Game development & design ✓ Unity 3D & 2D ✓ NGUI ✓ Android ✓ iOS ✓ WP8 ✓ Facebook Integration ✓ IAP Integration ✓ Ad Integration (Admob, Revmob, Chartboost, etc) ✓ Multiplayer ✓ Game Center / Google Play Services Integration My linkedin profile is the following: http://ar.linkedin.com/pub/gaston-claret/51/ba3/209

    Associated with: Bigfoot

    $44.44 /hr
    73 hours
    5.00
  9. Alexey Novikov

    Alexey Novikov

    Techincal consultant, Senior Web Developer

    New Zealand - Last active: 09/08/2010 - Tests: 2 - Portfolio: 11

    More than 15 years of miscellaneous programming; 10 years of dedicated commercial web development; 7 years of internet hosting solutions consulting; 5 years of team leading and web project management; 4 years of CPU driven micro-controllers and low power circuits engineering; Web Developer, Team Leader, Creative Entrepreneur, Solution Consultant. Original and innovative. Approaching problems in investigative manner. IELTS overall band score 7.5

    $50.00 /hr
    17 hours
    5.00
  10. Fabio B.

    Fabio B.

    Software engineer

    Colombia - Last active: 3 months ago - Tests: 3

    I am a developer and architect with vast experience in many areas and languages. I love complex issues and especially am eager to jump on new challenges and learn new stuff. Expect well-delivered work above expectations with excellent documentation, reporting and communications. This is your chance to hire an experienced professional matured in Switzerland in high-demanding Swiss bank environments and now living in South America at unbeatable rates! And I fluently speak 7 languages...

    Groups: Crossrider

    $44.44 /hr
    265 hours
    5.00