Top Upwork Freelancers

Clear all filters

Vlad Mikhailov

Vlad Mikhailov

Ruby/Rails Sotware Engineer

Russia - Tests: 4 - Portfolio: 2

I am a senior software engineer with over 8 years of experience. My main passion is to build clean robust software that solves the problem of users. You need reliable tools to be able to deliver such solutions. That's why I use ruby/RoR stack ( with reactjs lately ) for most of the projects I work on and clojure/pedestal/reactjs for special cases. I value good API design, complex client/server interaction and well-tested codebase. I also have experience in UX, product and project management (was a head of development with 15 developers and two QA engineers in a my team) and I know how to be a part of good team and how to lead one as well. My key skills: * Ruby, Rails 3/4, Sinatra/Padrino, Adhearsion * Clojure / Clojurescript / Pedestal * PostgreSQL, MySQL, NoSQL ( Redis, Memcached) * RabbitMQ, Beanstalkd, Sidekiq, Eventmachine * Javascript, Coffescript, Clojurescript, Reactjs, AngularJs * TDD, BDD, Continous Integration, GIt * DevOps, Chef, Ansible, Docker.

Groups: Coding Champs, Engine Yard Ruby on Rails Professionals Network

$50.00 /hr
3,287 hours

Sumon S.

Sumon S.

Full-Stack Ruby on Rails Developer & System Administrator

Bangladesh - Tests: 4 - Portfolio: 8

I am a skilled developer with extensive experience in Ruby, JavaScript, NodeJS, Perl, Linux and cloud base technology stacks. I love to work with brand new tools and solve challenging problems. I am looking for a long term and full time position at the moment. My English is very good. I scored 8 in IELTS test. I write clear, detailed, to-the-point reports/emails. I am available in IM 24/7. I am ready to work as part of a team as well as a one man team. I am looking for a long term relationship if not permanent position. I work according to your time zone. I am skilled in: # Ruby (Rails 4 and older, Cucumber, Rspec, Grape, VCR, Selenium, JRuby, Heroku, AWS) # Javascript (NodeJS, AngularJS, BackboneJS, jQuery, MeteroJS, ExpressJS,, CoffeeScript, Jasmine) # Perl (Catalyst, Mason, mod_perl, WWW::Mechanize, LWP, Plagger, Plucene, DBI, DBIx::Class, Rose::DB, CGI::Application, Template::Toolkit, HTML::Template, MisterHouse + lot more cpan modules...) # PHP (CodeIgniter, CakePHP) # Java, C++, C# # MongoDB, CouchDB, LevelDB, MySQL, PostgreSQL, SQLite # Erlang, Go, Scala (Learned as a hobby) I have used project management tools like Pivotal Tracker, Trello, Unfuddle, Basecamp, Aseembla, Trac and a few more tools like these.

Groups: Engine Yard Ruby on Rails Professionals Network

$22.22 /hr
1,896 hours

Wojtek Kruszewski

Wojtek Kruszewski

builds web applications

Poland - Portfolio: 1

[UPDATE] I'm recruiting an entrepreneur If you fit the description you can invite me to interview, describe your project and background. I'll let you know if it matches my expertise. "I have come here to chew bubblegum, and build software. And I'm all out of bubblegum." After years of working remotely for companies like Sage Software and InputHealth, I left on a quest to find optimal way to build and maintain web applications. Now I run a small consultancy and build web applications – from prototyping to maintenance. "If you find yourself in a fair fight, you didn't plan your mission properly." – David Hackworth I'm always looking to stack odds in our favor by using well supported, tried and tested frameworks and tools, simplifying UIs, prioritizing, challenging requirements, cutting overhead whenever possible.

Groups: Engine Yard Ruby on Rails Professionals Network

$34.00 /hr
3,667 hours

Alexey Z.

Alexey Z.

Project Manager / Ruby On Rails

Israel - Tests: 6 - Portfolio: 11

I am currently freelancing RoR projects across the universe, fullstack rails coder for your duty. I have been doing this for the last 9 years now and I was employed as CTO & Ruby On Rails Senior developer, and my projects include wide usage RoR(1,2,3,4), I love new technologies and I can learn to use them very fast! I can develop anything starting from tech plan/mockup, through creating rails application (agile method) till full setup of VPS/dedicated server (or even cloud), then I can maintain and administrate this project. I work with cloud platforms like AWS, Heroku, EngineYard. I have ZERO unsatisfied clients. Knowledgeable in CI like Jenkins, and various management systems like Trello, Lighthouse, Jira, Redmine (You can have a tracking project with my private Redmine installation for no cost) and some others All small things around webdev; AJAX, HTML, CSS, JS, RSS, XML, JSON. SVN, GIT(preferred), Capistrano/Chef/Rubber for multistage deployment for test/production projects, SASS, SCSS, HAML, CoffeScript, REDIS, various types of caching. Capable to work in Linux/OSX/Windows environments.

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

$55.00 /hr
3,583 hours

Sugiarto U.

Sugiarto U. Agency Contractor

Senior Ruby on Rails Developer and Manager

Indonesia - Tests: 7 - Portfolio: 10

Hello All, I am a senior ruby on rails developer. I like to learn and always learn. I want help you to solve your problems. Here what I can do for you: - Create app from scratch to enable your businesses - Develop new features for your existing apps - Fix buggy apps - Refactoring your apps source code. - Optimize your apps. - Create testing for your apps - Or maybe just question/answer for your problem. We can achieve points above using many technologies. - Database: mysql, redis, etc? - TDD/BDD development: cucumber, hudson,etc? - Background process: delayed_job, resque, etc? - Or Language it self: ruby,java,javascript..? - UI: html,js,ajax,jquery,prototype,css..? - Create API: REST,json? - Consume API: tucow, rackspace - Deployment: chef recipes Engineyard? - Versioning: git,svn? - hah.. there are ton technologies that we can use to solve problem, so the best way just communication :p. NEED MORE DEVELOPER/DESIGNER? I know I also limited by time, so If you need to solve problem, and need more developers/designers I also can provide them for you and I can manage them for you.

Groups: Engine Yard Ruby on Rails Professionals Network

$44.44 /hr
5,916 hours

Juan Lebrijo

Juan Lebrijo Agency Contractor

Ruby on Rails Developer (and DevOps)

Spain - Tests: 4 - Portfolio: 11

What I do best (my favorite tasks): * Backend developer with Ruby on Rails and PostgreSQL * Front end development with HTML, CSS (HAML/SLIM and SCSS/SASS), Javascript (Jquery, AngularJS, NodeJS ...) * Expert in DevOps high availability, scalable, zero downtime deployment with: Ubuntu / Docker / Chef / Capistrano stack. NewRelic for monitoring. * Expert in payment gateways: Braintree (my favorite), Stripe and Paypal. * TDD and BDD: Rspec and Capybara are my favorite frameworks * Continuous Integration/Deployment with Jenkins

Groups: Corona Labs, Engine Yard Ruby on Rails Professionals Network

$65.00 /hr
3,260 hours

Aleksandr L.

Aleksandr L. Agency Contractor

Ruby on Rails / PostgreSQL / JavaScript / Angular.JS / React.JS

Russia - Tests: 14 - Portfolio: 7

Hi, I'm web developer, CTO of on5LAB LLC, Russia. I have more then 5 years experience in web development. If you want to create a site or add something to your already existed site, or create any web service for your mobile app, in this case I'm the man that you need. I have more that 5 years of the experience in the web development and I'm focused at : Server side: ✓ Ruby ( Ruby on Rails ) Client side: ✓ HTML4 / HTML5 / HAML / JADE / SLIM ✓ JavaScript / CoffeScript ✓ Turbolinks.JS / Angular.JS / React.JS / BackBone.JS ✓ CSS / SASS / LESS Databases: ✓ Relational Database ( MySQL / PostgresSQL ) ✓ Document-Oriented Databases ( MongoDB / CouchDB ) Deploy Experience : ✓ Amazone Web Services / Heroku / Digital Ocean / Other VPS ✓ NGINX ✓ Capistrano Receipts I'll be glad to work with you, Alex.

Groups: Engine Yard Ruby on Rails Professionals Network

$30.00 /hr
3,743 hours

Alexey Dubovskoy

Alexey Dubovskoy Agency Contractor

On The Rails Way...

Russia - Tests: 3 - Portfolio: 5

I am a full stack Ruby on Rails/Javascript developer and TDD/BDD practitioner with 7+ years experience. I love working in startup atmosphere with a small team, building MVP in aggressive duration. From the time I obtained my knowledge in Math and Physics at the University, I realized that I have to question everything. I'm curious, I like running experiments and deal with challenges. I think my main strong points are: Deep knowledge of working piece (Rails, Angular.js, RSpec, D3, Ubuntu, OS X) Exceptional work ethics Promptness, Responsiveness I know and use in my work: Ruby, JavaScript, CoffeeScript, SASS, Slim; Rails, AngularJS, jQuery, NodeJS, Compass, Grunt, Yeoman; RSpec, Karma, Jasmine; Trello, Jira, Basecamp; OS X, Ubuntu Server.

Groups: Engine Yard Ruby on Rails Professionals Network

$33.33 /hr
2,311 hours

Ivan Povalyukhin

Ivan Povalyukhin

Ruby, Rails, Node.js, JavaScript, MongoDB, HTML5

United States - Tests: 5 - Portfolio: 4 / Linux, Ruby & JavaScript enthusiast I enjoy programming and look at the modern Web and Mobile technologies through the eyes of a software engineer. That being said, clean design and code, consistency and best practices play the major role in my work. I have been a full-stack web-developer since 2008 and my goal is to develop myself as a passionate programmer and generalist.

Groups: Engine Yard Ruby on Rails Professionals Network

$48.00 /hr
283 hours

Dariusz Urbanczyk

Dariusz Urbanczyk

Ruby, Rails, TDD, jQuery MySQL, PostgreSQL, Redis, Elasticsearch, Node

United Kingdom - Tests: 9 - Portfolio: 14

Ruby On Rails - Freelancer I am a full stack Ruby developer focused on Ruby, JS, Rails and Sinatra. 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 with linux & OSX skills. Database experiences: MySQL, PostgreSQL, Mongodb; Test frameworks: FactoryGirl, Rspec, TestUnit, Capybara. Infrastructure experiences: Heroku, Amazon Web Service (EC2), Rackspace, Engineyard; Payment process experiences: Stripe, Paypal; FrontEnd: jQuery, PrototypeJs, Bootstrap, CSS3, HTML5, Sass, LESS, CoffeeScript; Love: Basecamp, GIT, Lighthouseapp, Semaphoreapp, Hipchat and hubots, engineyard, codeclimate, newrelic. Thank you for visiting my profile.

Groups: Engine Yard Ruby on Rails Professionals Network

$27.78 /hr
1,288 hours