Ruby Developer

Use Ruby and the Ruby on Rails framework to create powerful websites with this great language for beginners.

At your pace
~ 12 months


Job guarantee
in 6 months

Bachelor's-level diploma

10 hands-on projects

Start now

One million computer programming jobs are estimated to be created in the U.S. by 2020 - as well as 700,000 in Europe - thanks to unprecedented growth in the tech sector.

Here at OpenClassrooms, we pinpoint the key skills needed for the most in-demand jobs and develop courses and diplomas to train our students in those areas. That’s why we've developed a one-year bachelor’s-level diploma in development, which you can complete entirely online with the help of a dedicated mentor. 

What will I do as Ruby developer?

Ruby developers write backend code in, of course, the programming language Ruby! This versatile and accessible language is a great choice for people starting out in development or for experienced developers looking to make a switch. Thanks to the Ruby on Rails framework, it's easy to build full websites from A to Z by using a few simple commands. 

Ruby developers could be in charge of:

  • Creating Ruby programs from scratch
  • Using the Ruby on Rails framework to create websites
  • Deploying Rails applications
  • Scaling Rails applications
  • Bringing mock-ups to life in a beautiful and consistent manner
  • Optimizing page loading time
  • Communicating with front-end developers for information exchange across the application
  • Using best practices to structure Ruby code
  • Writing tests to ensure the site’s back-end accounts for all possible uses
  • Ensuring the maintenance and growth of a site’s back-end

How much will I earn?

By following this path, you could end up in a job with the following salaries:

United States

  • Beginner: $60,000 - $80,000
  • More experienced: $80,000 - $200,000+

United Kingdom

  • Beginner: £30,000 - £45,000
  • More experienced: £45,000 - £100,000+

What are my job prospects?

This path can prepare you for the following jobs:

  • Ruby developer
  • Ruby on Rails developer

Who is eligible to enroll?

This path is accessible to all. Here are some recommendations:

  • A high school diploma / GCSE level
  • A good level of English (for non-native speakers, a CEFR level of B2, an IELTS band score of 6.5, or a TOEFL score of 80 is recommended)
  • Access to a computer (Mac, Linux-based, or a PC), headphones, a webcam, and a good internet connection

To earn the diploma, you’ll need to complete all projects and have them evaluated by your mentors. Your work will then be evaluated by a jury composed of professionals. Follow the courses offered in the path to prepare yourself for the projects.  

What will I learn?

In this path, you'll learn how to:

  • Write Ruby code
  • Read and write object-oriented programs
  • Build a website with the Ruby on Rails framework
  • Deploy a Rails application
  • Publish code as a Ruby gem
  • Write HTML and CSS
  • Analyze a project and choose a technical solution
  • Design technical architecture using UML diagrams
  • Query a database that uses and stores information
  • Write project documentation
  • Optimize performance

How will I learn at OpenClassrooms?

Our learning method is unique and revolves around two elements: professional projects and dedicated mentoring sessions.

At OpenClassrooms, learning is project-driven because that’s the fastest way to become proficient. Projects offer hands-on experience so you can hit the ground running when you start your new job.  

Want to see an example of a project? Read our blog post here.

During your path, you will be assigned a mentor who will offer one-to-one support via weekly video conference sessions. This mentor will offer guidance on your projects, help define objectives and guide you until you reach them. Our mentors are dedicated professionals who are experts in their field and have experience in sharing their know-how with our students.

Your diploma

OpenClassrooms is an official private distance learning establishment registered with the Board of Education in Paris, France that grants its own diplomas as well as those of prestigious academic partners.

Upon completion of your studies and validation of your skills by an academic jury, you will earn a "Ruby Developer" bachelor's-level diploma, registered with the National Directory of Professional Certifications (RNCP)*.
This diploma is at level 6 on the EQF (European Qualifications Framework).

If you have questions about its equivalence in order to undertake further study, contact your university or master's program.

* Sheet available at the following address:

Your Job Guarantee

At OpenClassrooms we are committed to helping you find your ideal job. We promise.

By following the learning path "Ruby Developer", you’ll learn an exciting new profession with great career prospects.

What’s more, you’ll find a job within six months of graduating or we’ll give you your money back!

Find out more

Detailed projects and skills

project 1

Learn how to learn!

You're embarking on a great learning journey! Equip yourself with the tools and mentalities you'll need throughout your courses and projects.
Duration10 hours
Skills acquired in this project
  • Create and update your CV or resume
  • Set clear goals
project 2

Integrate a WordPress theme for a client

Your new client, a real estate agency in the mountains, needs a website to show the chalets they sell. You'll use WordPress to build their site!
Duration80 hours
Skills acquired in this project
  • Write documentation destined for non-technical users
  • Select a WordPress theme based on client needs
  • Adapt a WordPress theme to client needs
project 3

Analyze a client's needs for their film festival

Learn how to translate the needs of a client into a clear, attainable solution!
Duration80 hours
Skills acquired in this project
  • Write a project brief
  • Choose an appropriate technical solution
  • Detail project specifications
  • List functionalities requested by the client
project 4

Map out a technical solution for the food delivery site ExpressFood

ExpressFood allows people to order their favorite meals and desserts for delivery at home! Help them set up a data structure that ensures no one goes hungry.
Duration100 hours
Skills acquired in this project
  • Design a database schema
  • Create technical architecture using UML diagrams
  • Use a schema when designing a database
project 5

Build a Rock, Paper, Scissors game in Ruby

Create a Rock, Paper, Scissors game to run from the command line in Ruby using classes and object-oriented programming.
Duration100 hours
Skills acquired in this project
  • Perform basic programming tasks with Ruby
project 6

Write an online survey application in Ruby

Create an application that allows users to submit forms to respond to surveys, and store their results along with their email addresses in a database. You'll also allow a site admin to review these results in a chart.
Duration100 hours
Skills acquired in this project
  • Handle web requests in Ruby
  • Store and read data in a formatted string
  • Write to disk with Ruby
project 7

Make an events platform

Build a platform using Ruby on Rails that allows users to organize and RSVP to events. It will have user accounts, a permissions system, a map, and email notifications before events occur.
Duration100 hours
Skills acquired in this project
  • Handle user logins securely with the Devise Rubygem
  • Use rubygems
  • Manage permissions for site users with Rails
  • Create a Rails app
  • Manage background jobs in Rails
  • Query and create map data with Rails
  • Send emails from Rails
  • Use Ruby with a database
  • Write automated tests in Ruby
project 8

Dive into an open-source Ruby project

There are some great open-source Ruby projects you can use for inspiration and as grounds for your learning. You'll analyze an existing Ruby codebase in this project.
Duration10 hours
Skills acquired in this project
  • Use rubygems
project 9

Deploy a Rails website on AWS

Deploy a Rails website using a free account on Amazon Web Services
Duration100 hours
Skills acquired in this project
  • Use open source social tools like Github
  • Deploy Rails apps
  • Manage configuration details outside of code
  • Run automated tests in Ruby
project 10

Survey the technology landscape

Create your own dashboard to stay up to date on all the latest and greatest tech happenings!
Duration10 hours
Skills acquired in this project
  • Identify tools and resources for staying up to date with technology
  • Set up a system for staying up to date with technology
Web developer (Développeur(euse) d’application)

Start toward the career of your dreams

At your own pace

€300 per month

Your perks:

  • Six-month job guarantee

  • bachelor's-level diploma

  • Flexible duration

  • Individual mentorship

  • 10 hands-on projects

Start nowNon-binding subscription

We are here to help

Our team is available to answer your questions about our programs or your new career path.