Javascript Backbone Ruby Freelancers

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Andrei K.

Andrei K.

Ruby on Rails / Javascript( Node + Angular / React /Backbone)Developer

Bulgaria - Tests: 9 - Portfolio: 7

I am a senior ruby on rails developer and javascript architect with more than 12 years experience. I've developed complex web sites and apps from end-to-end using ruby on rails and javascript frameworks. I'm also experienced MEAN stack and Angular full stack developer. I've been working with React/Flux stack for more than a year. My skill sets: Frontend skills: - MV* Frameworks: Angular.js, Backbone.js, Ember.js, Knockout.js, Marionette.js,SproutCore,JQuery UI - Javascript (including ecmascript 5), jquery, ajax, coffeescript, typescript - Javascript Libraries: d3.js, highcharts.js, underscore.js lodash.js async.js - HTML5 (audio, video, canvas, geolocation, localstorage), css3 - Adaptive layouts/frameworks - Bootstrap, skeleton, 960gs,Kendo UI Backend skills: - Ruby (1.7, 1.9, 2.x) / Ruby on Rails (3.x ,4.x) - Node.js / Express.js - PHP 5.3+ - ASP.NET MVC 4, 5 and C# - Java - Python 2.1+ Databases: - Relational: Mysql, MSsql, PostgreSQL, Oracle - NoSQL: MongoDB, Redis, Memcache, Couchdb Knowledge of PHP Frameworks/CMS: - Laravel, Symfony, Code Igniter, Yii - Wordpress / Drupal DevOps: -AWS (EC2, S3, Route53, OpsWorks), Cloud66, Heroku, Rubber, Puppet, Ansible, Capistrano Operating Systems: -Linux (Debian, Ubuntu, Fedora, Suse, and RedHat), Mac OS X, Windows 98, 2000, 2000 Advanced Server, XP, 2003 Server, 7 and 8 Other technologies: -AMQP (RabbitMQ), ZeroMQ, Resque, ElasticSearch -Programming Editors/IDEs: vim, emacs, TextMate, JetBrains (RubyMine, WebStorm) -Source Code Control: Git, Mercurial, Subversion I'm a great communicator , expert programmer, innovator and proactive-problem solver. I have been a technical lead for various projects before and I am very familiar with agile development approach. Thanks.

$45.00 /hr
711 hours

Sergei Kintsel

Sergei Kintsel

Ruby on Rails/AngularJS/Ionic developer

Russia - Tests: 6 - Portfolio: 3

_  I am a passionate Ruby on Rails/JavaScript programmer and analyst working through TDD and BDD. I have 4 years of experience in developing web applications. My main skills are Ruby on Rails, Sinatra, CoffeeScript. In my projects I've used JS Frameworks like Backbone.js and AngularJS. I have big experience in creating mobile applications based on Ionic Framework. I am good in both HTML5 and CSS3. I've been working on Responsive and Flexible layouts. I have been working with much count of databases including relational, document oriented, graph databases. For example: MySQL, PostgreSQL, MongoDB, Neo4j etc. I pay great attention to provide regular communication with my customers being online as long as possible every day. While I work on a project my main task is providing great fast flexible software and make my client be happy with the results.

$44.44 /hr
2,352 hours

Maciej Zubala

Maciej Zubala Agency Contractor

Senior Ruby On Rails developer

Poland - Tests: 4 - Portfolio: 6

Software development is not only my profession but also my greatest passion and hobby. This is why I spend majority of my free time improving my programming skills, learning new concepts, technologies, languages and tools. I get the greatest satisfaction when products I develop are released to the world and people start using it - that makes me want to spend more time at work. When not in front of my monitor, I'm probably taking care of my daughter or doing some sports (tennis and swimming most of the time).

Groups: Upwork Verified Developers

$38.89 /hr
5,597 hours

Vineet Sethi

Vineet Sethi Agency Contractor

Open Source Technologies Architect & Consultant

India - Tests: 5 - Portfolio: 7

I started as hobbyist programmer (writing code in PHP) from 2000 and since then I never looked back. Electrical engineer by education, I have learned and obtained expertise in Ruby on Rails, Javascript and Database Management Systems and since over last 2 years I have been working on NodeJS, AngularsJS, BackBoneJS and other related technologies which adds to my core competencies. I have fairly good amount of experience in Mobile Application development too. Since the inception of Hybrid Mobile Frameworks I have worked on Ionic, jQMobile, Cordova, Phonegap etc. I am an established Upwork programmer since 2008 and have satisfactorily delivered projects/MVPs to start-ups, high-profile corporations, small- and medium-sized businesses. I follow open and honest business practices to work with my clients to ensure I bring all their goals and ideas to life. I am looking for clients that are seeking experience and quality over quantity.

$33.33 /hr
1,880 hours

Eduardo M.

Eduardo M.

Ruby on Rails / PHP / Javascript / Backbone.js / Angular.js

Bolivia - Tests: 6 - Portfolio: 7

- Software engineer with 5+ years of experience on Web, desktop and mobile development - Excellent communication skills and team player - Full Stack Open Source Software Engineer - Strong object oriented programming and design patterns skills SPECIALTIES AND EXPERIENCE - Programming languages: Ruby, PHP, Javascript, Java, Python, Objective-C, C, C++, Visual Basic, HTML, CSS - Web backend: Ruby on Rails, Sinatra, Node.js, Wordpress, MySQL, PostgreSQL, Redis - Web front-end: SASS, LESSCoffeeScript, Backbone.js, AngularJS, Underscore.js, jQuery - Infrastructure Environments: Amazon Web Services (AWS), Heroku, Digital Ocean - Development tools: SublimeText, Git, SourceTree, PivotalTracker, Atlassian Jira, Basecamp, Balsamiq Mockups - Operating Systems: Mac OS X, Linux, Windows - System administration with Unix based systems - Mobile development: Native iOS apps with Objective-C, native Android apps with Java - Desktop development: Desktop apps with Java and Python + GTK - Test Driven Development (TDD) - Agile software development - UX design PASSIONS - Learning new technologies - Open Source Software - Distributed and scalable systems design and implementation - Awesome and innovative UI design - Mountain biking

$60.00 /hr
3,474 hours

Payal G.

Payal G.

Expert Ruby on Rails Developer

India - Tests: 7 - Portfolio: 9

Availability : Full time for $4500 per month Expert Ruby on Rails developer with over 7 years experience in developing web applications in different domains. My core competency is to be able to jump in to any phase of project life cycle with full efficiency. Worked well on projects with team of 1-12 members as well as single handedly built projects from scratch to the production/maintenance stage. Full stack developer with backend, frontend and server management skills. Skills: Ruby on Rails, Ruby JavaScript, jQuery, node.js, backbone.js, d3.js Mysql, postgresql, neo4j, mongodb HTML5, CSS3, HAML, SASS RSpec, Cucumber, Selenium, Capybara Amazon Web Services, Heroku Github, SVN Trello, Asana, Pivotal Tracker Adobe Photoshop, Adobe Illustrator API Integration (Facebook, Twitter, Instagram, Salesforce, Google Services and any third party service) SDK development, API development

$55.56 /hr
3,425 hours

Harold R.

Harold R.

Web Application Developer

United States - Tests: 2 - Portfolio: 14

"Harold really cares about the projects he engages in and it shows through his passion and dedication. Harold is the type of person you wish you had permanently on your team." "Outstanding work again from Harold. He will be our go-to person for web programming for our Hubspot COS going forward." "Harold is fantastic to work with. He is a great developer, has great interpersonal skills, and is able to communicate difficult concepts into easy to understand terms." I'm Harold, and I develop web applications. The quotes above are directly from my Upwork feedback. Feedback like this is typical as I blow past project requirements. I'm pricier per hour than other contractors, but you'll find I end up saving you money in the long run. I get things done the right way, and I'm extremely good at realizing new features with maintainable code with a quick turnaround time. My native language is English. I'm also fluent in Spanish, Italian, Portuguese, and basic French. I live in Boston, MA. Drop me a line on Upwork; I'd love to provide free insight into what you're working on!

$235.00 /hr
628 hours

Andriy P.

Andriy P.

Senior Software Engineer

Ukraine - Tests: 10 - Portfolio: 8

Have 10 years of commercial software development experience. 6 years, I work with Adobe Flex 3/4 and AIR technologies. Using MVC, design patterns, PureMVC / Caingorm / Mate / Robotlegs frameworks, strong knowledge of performance issues solving, memory leaks, working with large data sets in Flex, custom components development, spark skinning. Last 4 years, I work as senior Ruby on Rails engineer. Using Ruby, Ruby Rails, Javascript / Coffeescript, CSS / SCSS, HTML5 / HAML, Bootstrap, Backbone, AngularJS, Handlebars, jQuery, Ajax.

$40.00 /hr
2,477 hours

Irfan Ahmed

Irfan Ahmed

Full Stack Ruby on Rails Developer with 6 years of experiences.

Bangladesh - Tests: 5 - Portfolio: 7

I am a full stack developer. I work with Ruby, PhP, Javascript/jQuery/AngularJS, Postgres, Mysql, NoSql(s), AWS services specially. I am working with ruby for 6 years since 2009. I have consulted and mentored many individual developers to build their ruby based skill. I have been working this long as a remote developer without few positions. I am very passionate about learning new things and cutting edges technologies. I used to maintain my own brand through my codes. As a freelancer, I have worked in 63 projects with 100% client satisfaction. Recently I have started contributing to open source projects. So far I have contributed to few ruby gems and I have authored one ruby gem in the community. I have a personal website. I used to express my thoughts and write tutorials when I have time. You may visit my website. In my spare time I also love to contribute to Stack Over Flow. You can checkout my profile and achievements from the following link: My domain specialities are: Textiles and Fabrics Real Estate Business Management System Guide Management Systems B2B based Event Management System Community and Social Networks E Commerce/Online Store

Groups: Application Developers Alliance, Engine Yard Ruby on Rails Professionals Network

$30.00 /hr
1,767 hours

James Stewart

James Stewart

Ruby on Rails, Magento, Shopify Developer, Wordpress

China - Tests: 31 - Portfolio: 38

- Ruby on Rails - Javascript Node.js, Angular.js, Backbone, One page App Development - PHP MVC - Laravel, Zend, Yii, Symfony, CakePHP, CodeIgniter, Smarty eCommerce - Magento, CS Cart, Virtuemart - DBMS - MySQL, PostgreSQL, Oracle, MSSQL - Subversion Tool : Git, Tortoise SVN - Design Tool: Photoshop - Payment Gateway :, Paypal - API Integration: Facebook API, Twitter API, Google API, Google Map, Social Networking, Social Engine

Groups: BigCommerce, JomSocial...

$50.00 /hr
8,565 hours