Ruby On Rails Developer Freelancers

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Usman Ahmed

Usman Ahmed Agency Contractor

Ruby on Rails developer, Mongodb expert, Enterprise Architect

Pakistan - Tests: 4 - Portfolio: 1

Usman loves working with entrepreneurs with brilliant ideas in ironing out the technology barriers they're facing. He has extensively worked on E Commerce systems, Enterprise Work flow automations and making organizations go paper-less by embracing technology throughout their operations. He has also helped organizations reduce logistic costs using data visualizations, Maps, optimization algorithms and Mobile Applications. His favorite goal is to build small independent systems of value which grow together into an ecosystem of mutual benefit. Languages : Ruby, Python Framworks : Rails, Persistance : Mongodb Specialties: REST Mobile Applications ETL Data GIS Mapping Enterprise Workflow Automation

$33.33 /hr
122 hours

muh syaiful sabril

muh syaiful sabril Agency Contractor

Sr. Ruby on Rails & DB developer with cloud infrastructure

Indonesia - Tests: 11 - Portfolio: 14

I am a full stack Ruby on Rails developer and also a team leader. You want to build an awesome application with high quality standard? you came to the right person. I have experiences with web application development from scratch to production. You want to build a MVP of your idea? Give me a week trial and i will help you to build it. You want for help to fix your existing application that failed to launch to a product or left by your previous developer? I am here to help you. Database experiences: - MySQL, PostgreSQL, Mongodb Deployment infrastructure experiences: - Heroku, Amazon Web Service (EC2, Elastic Beanstalk), Rackspace, Linode, Engineyard. Payment process experiences: -, Stripe, Paypal But to be honest i don't have the shining badge as a web designer, but my standard is Twitter Bootstrap or Zurb Foundation, you can bring your own design or designer, or i will find it for you. Thank you for visiting my profile, just contact me even for just say hi or want to discuss about your project or your idea. I hope it worth your time :-)

Groups: Engine Yard Ruby on Rails Professionals Network

$70.00 /hr
9,123 hours

Maksym Skliarov

Maksym Skliarov

Senior iOS and Ruby on Rails developer, 5+ years of experience

Ukraine - Tests: 7 - Portfolio: 1

Over the last 5 years I was building iOS apps with Ruby on Rails backend on daily basis, 11 years total in programming on different languages: Swift, Objective C, C, Ruby, Python, bash, Pascal, Delphi, Assembly (Assembler, ASM), Processing. Also I build Mac OS utility apps time to time. I really like my job and iOS with Ruby on Rails makes development process very fast and enjoyable. Here is the list of major technologies I use (I like to learn new technologies too): - social SDKs: Facebook, Twitter, Google Plus, LinkedIn, Vk, Upwork, Elance; - cloud storages: iCloud, Amazon Web Services, Parse; - push notifications: Urban Airship, Parse, Infobip, custom web services; - analytics: Flurry, Adjust, Google Analytics, Fabric (Crashlyticts), Urban Airship, Parse; - payments: Paypal, Balanced payments, Braintree, Stripe, LiqPay; - SMS and voice: Twilio, Nexmo; - maps: Google, Apple, Yandex, Open Street Map; - databases and RDBMS: - on iOS: SQLite + CoreData, Realm; - on Ruby on Rails: PostgreSQL, MySQL, SQLite; - custom UI controls: custom transitions, animations, customization of default UI controls; - web: HTTP requests, development and usage of RESTful JSON and XML APIs; - RESTful JSON API: Jbuilder, RABL, MultiJson, YAJL, Oj; - HTML template engines: ERB, Slim, HAML; - stylesheets: CSS, SASS, SCSS, Twitter Bootstrap, FontAwesome and many others; - JavaScript libraries: jQuery, Angular, React, Twitter Bootstrap, HTML5Shiv, Respond.js, Highlight.js, CKEditor, TinyMCE, Owl Carousel and many others; - deployment of Ruby on Rails projects: VPS, Heroku; - programming design patterns: MVC, Active Record (Core Data), Singleton, Decorator (Category, Delegation), Adapter (Protocols), Observer (Notifications and Key-Value Observing), Memento (saving and restoring state of object), Facade; - programming principles: REST, DRY, KISS; - version control: git, SVN (I prefer git). Please, check my portfolio here: to see my latest published projects. Thanks for reading this! Best regards, Maksym.

Groups: Application Developers Alliance

$50.00 /hr
970 hours

Yuriy N.

Senior Ruby On Rails (RoR) + JS developer, Team lead, Tech lead

Ukraine - Tests: 1 - Portfolio: 2

Experienced Ruby and Rails developer, Team leader. I have experience in building a whole circuit of development process starting from developer hunting, organizing team and application architect to releasing and supporting finished project.

$60.00 /hr
5,126 hours

Daniel Alejandro Domínguez Díaz

Daniel Alejandro Domínguez Díaz

Ruby on Rails Developer

Argentina - Tests: 3 - Portfolio: 1

Ruby On Rails Web Developer with 2 years of experience. Languages: Ruby, JavaScript. Databases: SQL(PostgreSQL, MySql), NoSQL(Redis, MongoDB) I'm proficient with git. I can develop Front-End Code with the following Frameworks(JavaScript): * Jquery * AngularJS * BackBone ( Minimal Knowledge ) Favorite Stack: Ruby On Rails, MongoDB, AngularJS. I have experience setting up production environments for Rails Applications. Github:

$33.33 /hr
1,601 hours

Gleb P.

Gleb P. Agency Contractor

Ruby on Rails Developer

Russia - Tests: 2 - Portfolio: 2

During my RoR developer career I've been developing and managing a number of projects using lots of databases (MySQL, MSSQL, PostgreSQL, Mongodb), rails versions, countless gems and 3rd party services integration. Starting first as a developer, then as a manager in an outsourcing company, and now working in my own company I know well what's involved in building a great customer experience and keeping it on a high level. I am willing to prove in action that working with me would be a pleasure.

$44.00 /hr
1,750 hours

Derek Harrington

Derek Harrington

Ruby on Rails Developer

United States - Tests: 2 - Portfolio: 8

I am a talented and experienced full-stack web application developer. I work almost exclusively in Ruby on Rails. I love developing applications “the Rails way”. I appreciate the brilliance of the Rails architecture and enjoy using it to build world-class applications. I’ve created a number of complex systems using Rails including e-commerce sites, inventory management systems, scheduling systems, forum applications, internal organizational systems, and order fulfillment systems. My rails knowledge is also augmented with intimate knowledge of HTML5, CSS3, Sass, SQL, and jQuery.

$120.00 /hr
1,210 hours

Alexandr I.

Alexandr I.

Ruby on Rails developer

Russia - Tests: 3 - Portfolio: 13

Use Ruby for web development (6+ years, Ruby on Rails), command line tools/scripting. Do understand/use advanced Ruby features (metaprogramming, functional programming). Able to implement ordinary SQL based server side (MySQL, Postgres) as well as NoSQL based solutions (MongoDB) Use JavaScript/CoffeeScript/jQuery/Backbone.js for web frontend. See Node.js as next web platform Use Linux(Ubuntu, RHEL, CentOS) for development and web servers deployment. Software development with C++ (10+ years of experience) for Windows/Linux. Cross-platform development with Qt framework.

$35.00 /hr
3,371 hours

Stanislav Z.

Stanislav Z.

Ruby on Rails developer

Belarus - Tests: 6 - Portfolio: 4

I'm web developer. I have 3 years of Ruby on Rails experience. In the past I had used PHP for 4 years. I love Ruby and Linux. I accept only simple, beautiful and reliable solutions. That's why I'm ready for creation of really cool websites. I always learn new technologies. I'm interested in functional programming, now I'm learning Clojure programming language in my spare time. Programming Languages ● Ruby 1.9.3, 2.0 ● JavaScript/CoffeeScript ● PHP 5 Databases ● MySQL ● PostgreSQL ● Oracle Styles ● CSS/SCSS/SASS Markup ● HTML/ERB/HAML/SLIM ● YAML ● XML Version Control Systems ● GIT ● SVN Payments ● Stripe ● Clouds ● Heroku ● Amazon S3 API ● Facebook, LinkedIn, Twitter (authentication and data import) ● Google Maps ● Google Analyticss Ruby Gems ● Rails 3/4 ● Sinatra ● Capistrano ● Paperclip, Carrierwave, RMagick ● Omniauth ● Kaminari, will_paginate ● state_machine ● simple_form ● Nokogiri ● Devise ● Omniauth ● Active Merchant ● Active Admin ● Thinking Sphinx, Sunspot: Solr ● Unicorn, Passenger ● Gon JavaScript Frameworks ● jQuery ● Backbone.js Testing ● Rspec ● Capybara Development Methodologies ● Agile ● Scrum Operating System ● Linux: I am able to administrate Linux servers. Linux is my primary OS. ● Windows: I'm advanced Windows user.

$25.00 /hr
1,800 hours

Kleber Correia

Kleber Correia

Ruby on Rails Developer

Brazil - Tests: 3 - Portfolio: 5

Software Craftsman / Thinker with 7 year working professionally on IT, sharing and earing knowledge in a range of topics, like: UNIX, Agile Software Development, Functional and Object Oriented Languages, Design Patterns, RESTFul Architecture, Distributed Applications and Availability/Scalability with Cloud Computing. I have focused on some technologies, which are: - OOP with Java, Ruby, Ruby on Rails, Javascript, BackboneJS, AngularJS - Functional Programming with Javascript and Ruby - TDD/BDD with MiniTest/TestUnit, Rspec, Capybara, Jasmine - Front-End HTML5/CSS3 - SCSS/SASS and Javascript/CoffeScript - Cloud Computing with Amazon Web Services and PaaS with Heroku - Database with PostgreSQL, PostGIS, MySQL, MongoDB - Key-Value Storage with Memcached, Redis Next steps: JRuby/Rubinius, nodeJS, Meteor, and Objective-C/IOS. Resume: Github: Twitter: Blog:

Groups: Crossrider, LoginRadius...

$77.78 /hr
222 hours