Ruby Ruby On Rails Freelancers

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  1. 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

    Associated with: Rocket Mind Software

    $38.89 /hr
    5,510 hours
    4.61
  2. Marcin Szczepanski

    Marcin Szczepanski Agency Contractor

    Senior Ruby on Rails developer

    Poland - Tests: 9 - Portfolio: 10

    I have been developing web applications as a hobby, before it became my profession. I am a young developer but with solid experience already. I was involved in the creation of a number of interesting projects/applications. I am constantly broadening the scope of my skills and techniques. I like working in team and I'm always willing to share knowledge.

    Associated with: Polcode

    $32.00 /hr
    4,324 hours
    4.77
  3. Anton Kolomiychuk

    Anton Kolomiychuk Agency Contractor

    Senior Ruby On Rails Developer

    Russia - Tests: 3 - Portfolio: 4

    Hi, glad to see you here! I'm a Team Lead and Fullstack Senior Ruby Developer. I'm specializing on high-level application architecture design, prototyping and writing solid testable code. I'm prizewinner into 2 Upwork coding challenges (oDesk's Coding Challenge and Upwork Code It Up). When I have time I contribute to opensource projects. GitHub - akolomiychuk. I'm Team Lead and Lead Developer in SmartDev. We're a fullstack developers who focus on Ruby on Rails and Yii. Besides that I'm good at establishing development workflows in existing teams - ask me for the case study! One of projects: I and my team created custom CMS and online ticketing platform for Australian company SEMIPERMANENT. Project launched in 2012. At 24 July 2014 it had 5613 sold tickets on events for designers on 3 continents and we continue improving it. I want to make products for real people. So I do not work with projects in which I'm not believe. I put my soul into every project, so it's important to me. The same way I'm not working with projects where the deadline is yesterday. I believe that deadline - it's when someone seriously messed up. I'm - about calm and confident way to move towards the goal. I'm Ukrainian, who live in Siberia - the center of Russian outsourcing. If you see anything how I can help you - feel free to drop me a line! Take care!

    Groups: Coding Champs

    Associated with: PurrWeb

    $32.99 /hr
    2,172 hours
    5.00
  4. Nikola Balent

    Nikola Balent

    Senior Ruby on Rails developer

    Serbia - Tests: 5 - Portfolio: 4

    During the last couple of years I have developed wide range of projects for small and large companies. Large experience with MVC. Providing scraped data in any format needed: MySQL, CSV, XML. Offering high-class solutions for development on Ruby on Rails platform.

    $33.33 /hr
    4,608 hours
    4.61
  5. Alexander K.

    Alexander K. Agency Contractor

    Ruby on Rails developer / PhD

    Russia - Tests: 7 - Portfolio: 2

    Thorough and diligent computer scientist, devoted to implementation of brilliant technological solutions. Team leader in top 5 russian internet company. Web development (Ruby on Rails / Django / Other) Linux administration (Services, Networking, Virtualization) Artificial intelligence and big data expertise. PhD in Computer Science. Interested in challenging projects for me and my team.

    Associated with: United Systems

    $33.33 /hr
    2,135 hours
    5.00
  6. Sergey K.

    Ruby on Rails Developer/Consultant

    Russia - Tests: 2

    Looking for a dev to join your team, do a code review or start a new project from the ground up? Look no further! I have extensive experience in creating and maintaining applications of all sizes. (From simple proof of concepts and MVP's to complex SAAS platforms). I follow best practices and latest developments in ruby/rails world, know most design patterns and anti-patterns and can use agile practices (TDD/BDD/CI) effectively. I'm used to work in a well organized environment (with github, fetures in separate branches, pull requests, code reviews, CI, staging and QA) and can help you set one up, or I can adapt to whatever process you use just as well. On top of that I've been working remotely for the last 6 years, so I understand importance of communication and very used to doing everything without hand-holding and micromanagement. Give me a task, I'll ask for clarifications if something is not clear and then I'll get it done as fast as possible while maintaining code quality. A bit of technical stuff: Over the years I've dealt with pretty much everything related to development of web applications. Ruby 1.x, 2.x Rails 3 and 4 (including migrations from 3 to 4): file storage (AWS/Google) and file processing, SQL (postgres, mysql), authorization and authentication (Devise, Cancancan), payment services (Stripe), background processing, scheduled jobs, internationalization and timezones, complex mailing systems, caching and performance optimization, rack middleware and rake tasks, interactions with all sorts of APIs (Google, Adwords, Facebook, Twitter, Rets, and 10+ others) and all kinds of testing (functional, performance, feature and even a/b). I also know front-end quite well (JS/CoffeeScript/jQuery&plugins/React, Bootstrap/ZurbFoundation, Haml/Slim/Saas) and know my way around unix systems (can configure and deploy apps if needed). A very simple app to show you an example of my code: https://github.com/rovr/facebook-by-category

    $50.00 /hr
    1,068 hours
    5.00
  7. Marcelo Oliveira

    Marcelo Oliveira

    Full Stack Ruby on Rails Developer / Ruby Expert

    Brazil - Tests: 5 - Portfolio: 10

    I am an full stack web Ruby on Rails Developer whit more than 4 years of experience of full hands-on experience in many projects, most of this web. Already work at two companies how Ruby on Rails Developer, deal with back-end and front-end without problems in any application place. Differentials: - Expert in Ruby language, high quality code. Better performance and design. - 4 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. - Large experience with Heroku, Amazon Web Services, Git, Ruby API Integrations, Javascript 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) - Stripe Payment(Individual charge and Subscriptions implemented, every 30 days) 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, 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.

    $45.00 /hr
    134 hours
    4.99
  8. 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
    3,258 hours
    4.80
  9. Zbigniew Pieslak

    Zbigniew Pieslak

    Expert Ruby on Rails & Javascript Web Developer

    Poland - Tests: 8 - Portfolio: 8

    Over the last 7 years I have acted as a web developer and a Ruby on Rails expert, having the privilege of working with large international enterprises (NBCUniversal) as well as many promising startup companies. I consider myself to be a hard-worker motivated to deliver only a well-tested, scalable and performance-wise code that meets the current programming standards. During my career, I learned that understanding client's needs, good planning, proper programming experience as well as regular and honest communication are the key factors to build a successful relationship. Please have a look at my portfolio and the feedback I got from my clients. I’m passionate about learning new tools and programming languages and I quickly adapt to new environments. I’m seeking long-term relationships and new challenges. I am looking forward to hearing from you about your next project!

    $40.00 /hr
    3,624 hours
    4.97