Javascript Backbone Ruby Freelancers

Clear all filters

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
5,784 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) in 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

Andriy P.

Andriy P.

Senior Software Engineer

Ukraine - Tests: 10 - Portfolio: 9

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
2,499 hours

Md. Ziaul Haq

Md. Ziaul Haq

Sr. Frontend Developer(JavaScript, AngularJS, NodeJS, jQuery)

Bangladesh - Tests: 5 - Portfolio: 5

Currently I am working with a well known web application, where my technologies are OOP based JavaScript, jQuery, AngularJS, BackboneJS with AMD, nodeJS, JSON, SASS/COMPASS, HTML5, CSS3. I am also working with some mobile prototype web app, where my technologies are jquery-mobile, backbone with AMD and nodeJS. These days I would like to work as frontend developer though I have handy skill on backend as well, where I work with some MVC based php framework like CakePHP, ZendFramework with MySQL as relational database and MongoDB as NoSQL. My future interest is to work on Ruby, Ruby-on-Rails and develop some cool app with AngularJS. I have developed a wide range of web application using XHTML, CSS2, jQuery, AJAX, PHP and MySQL for various kind of clients from all over the world. I have very good experience on developing jQuery plugin based on requirements.

$38.89 /hr
6,216 hours

Vladimir D.

Vladimir D.

Full Stack Ruby on Rails develop

Ukraine - Tests: 1 - Portfolio: 3

Hi, my name is Vladimir. I'm from Kiev, Ukraine (GMT +2). I'm full time freelancer and I'm searching for interesting projects to join your team. My main specialisation are Ruby on Rails and React.js/Flux. My approach is results-oriented, my goal is to meet your needs and deadlines. When working on a new project I like to have a clear understanding of your goal and vision of the project. I love to work with most modern technologies and frameworks. I have experience working with clients from the USA, Australia and Europe. Recent projects in which I participated are learning management system (web application), constituent management web application, CRM system for gyms and map-based app for planning rescue operations (as part of main app). Thank you in advance for your time and consideration. I look forward to working with you soon. My favourite instruments: - Ruby and RoR - React.js + Flux + EcmaScript 6 My skills are listed below: - Ruby, Ruby on Rails - React.js / Flux - Javascript + EcmaScript 6 - jQuery - Backbone - Ember - Twitter Bootstrap / Zurb Foundation - HTML5, CSS3 - JSON, API's - SQL - Linux - Git - Ansible

$40.00 /hr
1,020 hours

Marcelo Oliveira

Marcelo Oliveira

Full Stack Ruby on Rails Developer / Ruby Expert

Brazil - Tests: 5 - Portfolio: 11

I am an full stack web Ruby on Rails Developer whit more than 5 years of experience of full hands-on experience in many projects. Already work at two companies as Ruby on Rails Developer, deal with back-end and front-end without problems in any application place. * MVP specialist * As i am full stack i can do work of 2, 3 people assuring quality and bug free. Can fix/improve existing projects and also starting from scratch, like to keep things simple to be easy give maintenance and not waste time. Differentials: - Expert in Ruby language, high quality code. Better performance and design. - 5 years of FULL experience with Ruby on Rails in various types of projects so have stronger knowledge of framework Rails and how it works. - Test Driven Development(TDD) experience, using Rspec/Factory Girls/Shoulda and others support tools. - Large experience with Heroku, Stripe, Amazon Web Services, Git, Ruby API Integrations, Javascript, Angular and jQuery. Skills already had experience: - Ruby Metaprogramming(expert) - Git, experience with Github and Bitbucket - Ruby on Rails (full hands on experience) - Heroku - Front-end knowledge to do anything my client ask - Twitter Bootstrap(work a lot with that) - Web development, HTML/CSS and Javascript - PostgresSQL - JQuery, own plugin published - Amazon Web Services (AWS) - Unit tests whit Rspec but also whit Test unit. - Background Jobs (Sidekiq, Rescue, etc) - Image upload - MailChimp - API development (About 3 Mobile Apps using my APIs), high performance APIs - Database Backups - Twillio - SMS Marketing - Email marketing - Third parties - JSON (Read and Write) - Angular JS, in many projects - Stripe Payment(Individual charge/Subscriptions) Already work a lot with Mobile, using my Rails API: - Android (own app published) - Windows Phone (own app published) - iOS (own app published) Some Ruby Gems already work(not all): Devise, Capistrano, AWS-SDK(Amazon Web Services), Paperclip, Stripe, Kaminari, Pg_search, Rspec, FactoryGirl, Shoulda Matcher, Rails Admin, Pg_search, Solr, Kaminari, Faker, Twitter Bootstrap, Sidekiq, Rufus Scheduler, Twillio(SMS), Gibbon(Mailchimp), Better Errors, Foundations, MySql, Puma, Thin, PG, SpreadSheet, Pry, New Relic, XLS, Redis, Oj, Browser, i18N, Heroku and lot of others. Have experience whit all this things and others, please contact to more info, im open to questions.

$75.00 /hr
158 hours

Miroslaw Maziarz

Miroslaw Maziarz Agency Contractor

Senior Ruby on Rails Developer with Passion

Poland - Tests: 8 - Portfolio: 9

I have more than 8 years of experience in commercial web development. Over the last 7 years I have developed a variety of applications using Ruby On Rails, JavaScript, TDD, SASS, PostgreSQL, MySQL, Amazon EC2, Rackspace and Heroku. I am focus on productivity and quality; I am among the top 10% freelancers who passed the tests in RubyOnRails, PostgreSQL and Internet Security. I am interested in building the best quality software that means well designed, easy to maintain, easy to extend to a new feature and well tested with autotests. Please find my skills & experiences below. - Ruby on Rails - Frontend (Javascript / jQuery / CoffeeScript / Backbone / Bootstrap / Angular / HAML) - Node.js - Web Browser Extension Development (Chrome, Firefox) - Database (Mysql / PostgreSQL / MongoDB / Redis / Memcache) - 3rd Party API Integration ( Google Map API, eBay, Amazon, Paypal API ) - Github / Bitbucket / AWS / Heroku / Engine Yard - Server Management

Groups: Engine Yard Ruby on Rails Professionals Network

$36.67 /hr
6,060 hours

Vitaliy Zhukov

Vitaliy Zhukov Agency Contractor

Professional .NET developer ASP.NET, MVC, Azure, SQL, JavaScript

Russia - Tests: 17 - Portfolio: 10

Vitaliy is one of the most talented developers we have. His expertise are .NET related technologies and JavaScript but this doesn't mean that he is not able to be the best in other areas. He likes to improve his own skills working on different projects and learn something new.It doesn't matter if it's a new technology or an API, you can be sure that he adapts to any new stuff very quickly and deliver his tasks in time. He is also a perfect team player, maybe because he likes team sports :)

$40.00 /hr
7,718 hours

Andrew Yudin

Andrew Yudin Agency Contractor

Senior JavaScript (Angular JS/Backbone JS)/ROR Software Engineer

Kazakhstan - Tests: 3 - Portfolio: 3

Hi! I'm full-stack software engineer with experience of more than 11 years, possessing strong analytical and problem solving ability and extensive experience in oversight, planning, developing and delivery diverse IT systems and apps. Self-motivated, able to work effectively alone as well as in team. Possess strong technical skills in: Ruby, RoR, Angular JS, Backbone JS, HTML5, CSS, XHTML1.0-1.1, PHP4-5, Sencha, jQuery, jQueryUI, 960gs, LESS, MySQL, PostgresSQL. -back-end development: Ruby; -UI-development in xHTML/HTML5, JavaScript; -development of sophisticated architecture; -creating cross platform APIs based on RPC(json-rpc, SOAP) and REST. -design and develop full scale content management systems (CMS), applying Ruby, HTML5, CSS, MySQL; -design and develop user interface with the help of libraries and frameworks jQuery, jQuery UI, Sencha; Let me know if you need to create awesome product, I'll be eager to help. Regards, Andrew

$33.33 /hr
3,880 hours