Ruby Sinatra Freelancers

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  1. Hector O.

    Hector O.

    Ruby on Rails/Sinatra/iOS/JS/jQuery/Autodesk Inventor

    United States - Last active: 4 months ago - Portfolio: 1

    Hello. My name is Hector, and I am a freelance developer. I have a BS in Chemical Engineering from the University of California, and I have spent the last two years working for an Environmental Consulting company. I have always been fascinated with technology, and I decided to become a web/software developer for two reasons: 1) with software/web applications, you can generally build things faster and for a fraction of the price of other Engineering applications 2) I love to code. My software/web development training includes completing the Tealeaf Academy (Professional level Ruby on Rails Program taught by IBM Engineers), and a Professional Software Development Certificate in Ruby on Rails from the University of Washington in Seattle. I have also learned iOS development through Udacity's nano degree program. I have also completed various CS courses and trainning through Udacity/Coursera and the Treehouse Academy. My Autodesk Inventor training includes a semester long course in college, and applications I have designed at my previous company (see description below). Some applications I have developed include a web based blackjack game using Sinatra/JavaScript/HTML/CSS/jQuery/Ajax, and a Reddit clone using Ruby on Rails/JavaScript/HTML/CSS/jQuery/Ajax. Using RubyMotion I have built a simple iOS app that maps all the locations I have lived in during my life. Another notable Engineering application I have built from scratch is a flow rate meter that measured the air flow through a pipe. I designed a pipe with an orifice plate, and utilized a pressure transducer to measure the pressure drop through the constriction. The pipe was calibrated at various known flow rates and an equation to calculate the flow rate was derived from this data. I then integrated the pressure transducer with a Campbell Scientific datalogger and programmed the data logger to calculate and record the flow rates at 5-min, and 1-hour intervals. I used Autodesk Inventor to design the flow rate meter, and on a separate project, I used Autodesk Inventor to design an air sampling system. Given that I am new to freelancing, I will be keeping my hourly rate low for a short period while I start building a reputation.

    $18.00 /hr
    0 hours
    0.00
  2. Patricio Mac Adden

    Patricio Mac Adden Agency Contractor

    Computer Science graduate, Ruby, Rails, Contributor to Sinatra, TDD

    Argentina - Last active: 10/12/2013 - Tests: 4 - Portfolio: 1

    I'm a Computer Science graduate with 6 years of experience in Web Development. I love Ruby, Rails, Sinatra (which I contribute to) and Test Driven Development.

    Associated with: TEMPL

    $33.33 /hr
    12 hours
    0.00
  3. Pavel Pachkovskij

    Pavel Pachkovskij

    Full Stack Ruby on Rails, AngularJS, DevOps Expert

    Belarus - Last active: 4 days ago - Tests: 4 - Portfolio: 3

    I am Senior Ruby on Rails developer with 6+ years of experience. TECHNOLOGIES: Frontend: jQuery, Highcharts.js,Backbone.js, AngularJS, Twitter Bootstrap Backend: Ruby, Ruby on Rails, Sinatra, Jekyll, Golang DevOps: Chef, Capistrano, Amazon OpsWorks, Docker, JuJu Charms Databases: MySQL, PostgreSQL, MongoDB, Redis, RabbitMQ Payment Gateways: Stripe, PayPal, Skrill APIs: Google APIs, Twilio, Mandrill, Mailgun, Quickbooks, Mixpanel Misc: PDF and Spreadsheets generation, PDF-templates filling and and signing, Emails styling Workflow tools: github, Pivotal Tracker, Redmine, New Relic, Airbrake, Mailtrap

    $40.00 /hr
    144 hours
    5.00
  4. Hasham Malik

    Hasham Malik Agency Contractor

    Highly Experienced Rubymotion & Ruby on Rails Developer

    Pakistan - Last active: 1 month ago - Tests: 5 - Portfolio: 6

    With over the decade of experience in developing and maintaining successful web applications, I have developed deep expertise in delivering and maintaining high quality well tested code written in cutting edge web technologies. I have been writing Ruby on Rails applications since 2005 as a core technology. I like to write applications with comprehensive test coverage and using TDD/BDD. I also specialize in high availability deployments on various cloud platforms. I can communicate well in English and would love to report progress frequently. I have expertise in these technologies: Languages: Ruby, Python, Javascript Frontend: Haml, Jquery, AngularJS, Knockoutjs, Sass Frameworks: Ruby on Rails, Sinatra, Flask, PhoneGap Persistence: MySQL, Postgresql and MongoDB Testing: Rspec, Cucumber & Jasmine Deployment: Capistrano, AWS, GAE

    Associated with: Zen of Ruby, Ballista Labs

    $30.00 /hr
    160 hours
    5.00
  5. Jordan Smith

    Jordan Smith

    Professional Web Developer

    United States - Last active: 4 months ago - Tests: 3 - Portfolio: 1

    Hello there! I am an experienced Ruby on Rails web developer. I love taking creative ideas and turning them into a reality. The majority of my work is done using Ruby on Rails, PostgreSQL, Javascript, jQuery, and Twitter bootstrap. I have experience using various other frameworks and can adjust to the job at hand, but those are my preferences. I also have lots of experience in affiliate marketing dealing with various traffic sources and ad networks. If you are interested in building any tools relating to this I would have great insight and could bring fresh ideas. Feel free to contact me with any website ideas and we can see if it is doable!

    $45.00 /hr
    2 hours
    0.00
  6. Alexey K.

    Alexey K.

    Full-stack Ruby/Rails/Sinatra, Coffeescript/Javascript, GO developer

    Russia - Last active: 6 days ago - Tests: 3 - Portfolio: 3

    More than 15 years working as a software engineer. I was involved in the design and development of software of varying complexity, with a large stack of technologies used. I'm self-motivated in improving my skills and learn something new. I have a positive experience of developing and supporting backends for mobile applications using RoR and Sinatra frameworks and mobile applications for the iOS platform. I have a positive experience of designing and developing large high-load application with microservices architecture with using GOLang/Ruby as language for development, Redis for caching and fast storage, PostgreSQL for persistent data storage, RabbitMQ for message routing, JSON as message format and Docker/Ansible for deployment.

    $33.33 /hr
    466 hours
    4.80
  7. Elmer A. Sia

    Elmer A. Sia

    Software Developer (Ruby, Rails, Sinatra, C#) & Technical Writer

    Philippines - Last active: 08/14/2014 - Tests: 10 - Portfolio: 3

    I'm an experienced software developer who's passionate in database and information systems development. I've successfully developed, deployed, and maintained various desktop-based database applications using VB6, MySQL, and 3rd party GUI components. Though I'm not using VB6 anymore, back then I possess a high level of proficiency in the said language. Now, I'm focusing into server-side scripting, web applications and web services development using Ruby, Ruby on Rails, and Sinatra respectively. Aside from this, I'm also an avid blogger and technical writer that loves to write computer programming topics, tutorials, and technical documentation. To know more about me, you can check me up online in: * http://www.elmersia.com * https://ph.linkedin.com/in/panoysia

    $20.00 /hr
    0 hours
    0.00
  8. Myroslava Stavnycha

    Myroslava Stavnycha

    Ruby Developer (Ruby on Rails, Sinatra)

    Estonia - Last active: 1 day ago - Tests: 2

    Young student from Estonia, but a citizen on Ukraine. Ruby developer with 2 years of experience, working with both Ruby on Rails and Sinatra frameworks. Have additional experience with Javascript and AngularJS. Working with both SQL and NoSQL databases. I appreciate code quality, purity and maintainability. Worked in teams 3-5 people as well as on individual projects. Interested mostly in part-time jobs.

    $10.00 /hr
    54 hours
    5.00
  9. Eduardo M.

    Eduardo M.

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

    Bolivia - Last active: 1 day ago - 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
    3,173 hours
    4.80
  10. Rômulo S.

    Rômulo S.

    Software Developer - Python, Ruby, Java, JavaScript

    Brazil - Last active: 6 hours ago - Tests: 4 - Portfolio: 8

    Senior software developer with a broad skill set. Very quick learner. I do my best to write beautiful, efficient, and thoroughly tested code. I've handled all kinds of code bases - small to large, simple to complex, ancient to bleeding edge. I'm comfortable with any modern programming task. I've been a Linux user for over a decade and I'm well versed in server administration. Available part time, 10-30 hrs/week @ EST+3. Currently looking for Python, Ruby, node.js, Java, C# and JavaScript jobs. Programming languages and frameworks I have worked with: Python - Django, Flask Ruby - Rails, Sinatra Node.js JavaScript - jQuery, Backbone, Marionette, Angular Java - Spring, Play .NET - C#, ASP.NET MVC PHP - Wordpress, Laravel, Silex, Symfony Shell scripting MUMPS - InterSystems Caché Databases I have worked with: MySQL Postgres SQL Server Ingres MongoDB InterSystems Caché

    $55.56 /hr
    492 hours
    4.99