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Ruby on Rails Upwork freelancers typically receive a client rating of 4.73.

Last updated: October 1, 2015
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Peter S.

Peter S. Agency Contractor

Web Development and Design

Ukraine - Tests: 3 - Portfolio: 3

I'm co-founder of COAX Software - a dedicated company that builds comprehensive, custom solutions for business. Have 5 years experience in the field of UI/Ux Design & Web Development and 2 years experience in the field of Mobile Development. Developed more than 100 successful projects. Provide full-cycle development (Design, Front-end, Back-End and Mobile Development). Have pleasure from working on exciting projects with interesting people. The areas of expertise are: - Ruby On Rails - API Integration - PostgreSQL - MongoDB - HAML / SASS - CoffeeScript - Slim - Backbone.js - Marionette.js - Wordpress - Android & iOS

Associated with: COAX Software

100% Job Success
$30.00 /hr
1,302 hours

Gregory Funtusov

Gregory Funtusov

Passionate Ember.js developer and Machine Learning architect

Russia - Tests: 7 - Portfolio: 3

I love building smart computer systems that solve people problems. I have a background in developing machine learning solutions to real problems and creating complex front end applications with ember.js. This is my strength: seeing the whole picture, never saying "that's impossible!", knowing how to perform magic deep down the back end and display the results to a user in an easy and accessible way.

Groups: Engine Yard Ruby on Rails Professionals Network, MailChimp Experts Group...

100% Job Success
$60.00 /hr
6,301 hours

Octavian Neguletu

Octavian Neguletu

Java/Ruby/SQL/Postgres/Web Scraping/RubyOnRails

Romania - Tests: 9 - Portfolio: 10

Ruby, Rails 3 & 4, AWS, S3, Heroku, Javascript, jQuery, HighCharts, Ajax, MemCache, Redis, Sideqik, HAML, ERB, XPATH, Nokogiri, Mechanize, Feedzirra, API restful Calls, Facebook Social Graph, Postgres, MySQL, Vertica, SQL Server, Neo4j, Objectivity Graph Databases,Twitter Bootstrap, CSS, Git, Payment Processors, Java, SWING/AWT, Jigloo, Weka, Algorithms of Information Retrieval(AIR), Data Mining I am constantly looking for new business opportunities and challenges. I also have a few personal ongoing projects as well, so I love being part of start-up ideas.

100% Job Success
$27.78 /hr
1,225 hours

Masoom Raza

Masoom Raza

Software Engineer, Java/J2EE Developer

India - Tests: 3 - Portfolio: 3

• 7 years of experience in Analysis, Design, Development and Maintenance of various J2EE applications. • Extensive knowledge of Core Java. • Dynamic Software Engineer and Team Member with rich, cross-functional exposure to the entire spectrum of SDLC functions for diverse range of processes, products / services. • Worked on Struts, Hibernate, iBatis, Spring, Zend, CodeIgniter, Ruby on Rails framework. • Worked in design pattern, OOAD, data modeling, development and integration. • Experience in Integration of various data sources like Oracle, PostGre SQL Server, SQL Server, Flat Files. • An effective communicator with exceptional relationship management skills with the ability to relate working with customers, projects managers and technical teams. • Highly motivated, quick learner, positive and goal-oriented, with demonstrated professionalism, attention to detail as well as the ability to be a good team member and able to lead a team. • Expert in in opensource chat system setup for an organization.

100% Job Success
$16.67 /hr
269 hours

Chris Smith

Chris Smith

Our Remedy is Your Solution

United States - Portfolio: 29

We look to produce results and build partnerships in verticals we feel have growth potential and are interesting to us as a company. We foster relationships by providing solutions that accommodate our client's goals, budgets and expectations. Our success relies on innovative strategic thinking and creative digital solutions based upon an understanding of our client's business model and target audience.

$35.00 /hr
141 hours

Gyan Gupta

Gyan Gupta

Senior ror developer

India - Tests: 3

Over the last 5+ years, I have worked on various business and social ideas and observed that what it takes to make any idea a success. I am a very strong supporter to use Agile methodologies, and always prefer to apply TDD/BDD approaches. I believe, These are important aspects to make the website maintainable and adoptable. I try to learn the system as close as possible because this is key to make good suggestions and we can observe the system as user perspective. I am very keen and quick learner and always be ready to face new challenges.

$15.00 /hr
102 hours

Sam edwards

Sam edwards

Amazing Wordpress Expert/front-end webdeveloper

Canada - Portfolio: 1

My objective is to deliver premium quality work at a fair price to help you achieve your business objectives and goals. -I would rather listen to you than brag about my achievements, who does that anyway? -If not for anything i want you to fall in love with the work i will do for you, thereby kick-starting a long-term working relationship we will both cherish

55% Job Success
$40.00 /hr
3 hours

Yahya Sabry

Yahya Sabry Agency Contractor

Senior game developer and producer

Egypt - Tests: 2 - Portfolio: 1

I'm Yahya, Senior game developer and producer, I would like to help in building your success story. I have built my own experience in both development and producing though my gaming start-up Funwave Games. So, most likely I know what exactly you are looking for and can help in many other points that you might have not much experience in like: 1- Games KPIs and our targeted values (Activation, Retention, Virility, Engagement, ARPU, ARPPU, DAU/MAU) and provide reporting system to keep track with your your game with daily and weekly report. 2- Top F2P monetization techniques and how to have healthy successful game (Acquisition cost < LTV ) like introducing virtual currency, using progress gates and reward removal model with the effect of fun pain. 3- Growth hacking, market and SEO best techniques, and more 4- Socialization and get max effect of social networks as I believe one of the most important keys to have successful game is social effect and if we have well engineered social game, most likely we have successful game. -------------------------------------------------------------------- Please let me share with your some info about me. Titles: ............ * CTO – Funwave Games, 2011 - Present =>League Champion: Football manager simulation game, Available on: Mobile and Web – Using Unity => Ultras: Football simulation game, Available on: Facebook - Using Flash and AS3 *Game Producer - Nezal Ltd, September, 2014 – April, 2015 =>Football Rush: Casual football game available on: Facebook, Android, iOS and Web – Using HTML5 ------------------------------------------------------------------------------ Skills Technical Experience ............................................. Front End: ..................... AS3 (2011 - 2013), Unity and C# (2014 - Present), Java (2007 - 2011), Android (2010 - 2011) and BlackBerry (2009 - 2010) Back End: ..................... Ruby on Rails (2014 - present), Sinatra (2013 - present), PHP (2011-2012), Java EE (2009 - 2011), Couchbase (2011 - 2013), MongoDB (2013 - present) and AWS (2011 – present). Strong organization, analytical and management skills. Deep knowledge about games KPIs and targeted values Writing gaming insightful insights on --------------------------------------------------------------------------- Education: ....................... Bachelor of Engineering – Alexandria University, Computer Software Engineering, 2007 – 2011 ------------------------------------------------------------------------------------ Funwave Games website: Please find me in Linked in here: Skype: yahya.sabry eMail: Mobile: +2-0100-45-49-167 Thanks a lot for visiting my profile Yahya Sabry

Groups: Android

Associated with: Funwave Games Ltd

75% Job Success
$24.00 /hr
279 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

100% Job Success
$55.56 /hr
3,240 hours