166 Ruby on Rails developers in 51 agencies found

Ruby on Rails developer with high responsibility level and communication skills
Nazar perfectly handles set tasks with preventing complicated issues and solving it fast and professionally. Has great communication skills and is able to have a fluent conversation with the customer...
6 Projects completed
GMT+2 East Europe
All rates are indicative, annual rate includes 5% discount
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Updated: 17 Oct 2018
AK
Ruby on Rails (full-stack) hardworking and responsible developer
Full-stack developer who specializes in Ruby on Rails technology. Deals with various APIs and faces new challenges with appropriate professionalism. Generates a lot of ideas to improve the development...
10 Projects completed
GMT+2 East Europe
All rates are indicative, annual rate includes 5% discount
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Updated: 17 Oct 2018
Ruby on Rails developer with 3 years experience
OOP programming; MVC paradigm; API + JSON; REST and HTTP protocol; HTML5; React; RDBMS: PostgreSQL; MySQL; Services: Cloudinary; Google API; S3; OAuth2 social networks; Liqpay; Github /Bitbucket.
2 Projects completed
GMT+2 East Europe
All rates are indicative, annual rate includes 20% discount
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Updated: 15 Oct 2018
AS
Ruby on Rails developer with great experience in building complex APIs and integrations
I'm a Ruby on Rails developer with great experience in building complex APIs and integrations. Recently, I've also built several chatbots and integrated applications with 3rd party systems.
2 Projects completed
GMT+2 East Europe
All rates are indicative, annual rate includes 20% discount
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Updated: 16 Oct 2018
A Ruby on Rails Specialist, who can carry your project to the next leve
Israel is experienced web developer who started his career after college in 2008 and with ruby on rails in 2010. His expertise is ruby on rails and javascript (nodeJS)
12 Projects completed
GMT West Europe
All rates are indicative, annual rate includes 20% discount
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Updated: 17 Oct 2018
Senior full-stack engineer from Ukraine with over 5 years of experience in web and mobile development. Ruby/Ruby on Rails, JavaScript, Groovy.
All rates are indicative, annual rate includes 10% discount
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Updated: 17 Oct 2018
AM
Solution Architect and CTO
I’ve been in the tech industry for 15+ years and take a bird’s eye view beyond hype to design solutions for complex projects. I’m a Ruby on Rails enthusiast and have a passion for API security. In fac...
All rates are indicative, annual rate includes 20% discount
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Updated: 16 Oct 2018
Senior Markup Engineer and UX/UI Designer
I’m a CSS ninja and love making your designs come to life with HTML5, CSS3 and JavaScript. Besides doing the markup for static designs, I have experience working with sites deployed via Ruby on Rails...
2 Projects completed
GMT+2 East Europe
All rates are indicative, annual rate includes 20% discount
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Updated: 16 Oct 2018
LK
All rates are indicative, annual rate includes 20% discount
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Updated: 10 Oct 2018
Ruby on Rails developer with more than ten years experience in developing
All rates are indicative, annual rate includes 20% discount
view Profile
Updated: 10 Oct 2018

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Ruby on Rails

The Сomplete Guide to Hiring a Ruby on Rails Developer

Ruby on Rails is a combination of the Ruby programming language and front-end technologies for creating web applications that run on a web server. In other words, it is a server-side web application framework, so Ruby on Rails developers are considered to be back-end developers. They use a modular approach to writing Ruby code by using small libraries that are called “gems.” Typical daily tasks of a Ruby on Rails developer include the development of all server-side logic, database design and management, and ensuring responsiveness to requests from the front-end.

If you are looking for Ruby on Rails specialists, please check out this article, where we will explain which skills and knowledge are usually required from Ruby on Rails programmers.

Checking hard skills of Ruby on Rails programmer

RoR-specific questions:

  1. What is a swapfile and what is it used for? How does the garbage collector work?
  2. What is a code style guide? What style guides in Ruby and Javascript do you know?
  3. What is MRI (Matz Ruby Interpreter)? What role does it play in the software lifecycle?
  4. What are some use cases of tests? Is it always good to write tests? What approaches in test writing do you know? What test instruments in Ruby do you know?
  5. Philosophy question: How would you organise a RoR application where front-end is written with React.js/Angular.js/Vue.js?

General questions:

  1. What is strict typing and how does it differ from dynamic typing? What are pros and cons of each one?
  2. What is Microservice? What are the pros and cons of microservices architecture against monolith application?

So here is a complete list of skills to consider:

  1. Solid knowledge of the Ruby programming language.
  2. Experience with Rails and other common libraries, such as RSpec and Resque.
  3. Understanding of server-side templating languages, such as Liquid or Slim, and server-side CSS preprocessors, such as SASS, LESS, or Stylus.
  4. Experience in developing highly interactive applications for a wide range of users.
  5. Familiarity with relational databases, such as PostgreSQL, and NoSQL data stores.
  6. Understanding of the MVC (Model-View-Controller) approach.
  7. Basic understanding of front-end technologies, such as JavaScript, HTML5, XML, and CSS3.
  8. Ability to integrate the front-end with back-end.
  9. Proficiency with the Linux/Unix/MacOS X environments.
  10. Experience in creating RESTful web services.
  11. Ability to think logically in order to define problems, gather data and draw conclusions.
  12. Ability to carry out regular code reviews in order to improve code quality, design and tests.

Review the soft skills of candidates

YouTeam is a platform for hiring experienced software engineers, not junior developers. Here are the two of the most useful screening questions, you can ask candidates to help identify their level of professionalism.

  1. Please describe your previous experience. What was the complexity of these projects? What was your role on those projects?

What to look for in candidates’ answers:

  • Is s/he dedicated more to quality (clean code, code style) or to quantity (number of features delivered, product time to market)?
  • Is s/he a team player?
  • Level of responsibility.
  1. How do you deal with issues you are facing for the first time and don’t know how to resolve?

What to look for in candidates’ answers:

  • Is s/he a deep thinker or a code first then check person?
  • Does s/he engage teammates to discuss unknown issues?
  • Is s/he multi-functional person? Can s/he do DevOps tasks? Can s/he do front-end tasks?

There are no good or bad answers, it just allows to understand if a given candidate is a fit for your particular project.

We hope this article will save you time getting prepared for interviewing candidates. We hope you become a hiring rock star and succeed with your project by putting the right professionals into the right roles on your development project.

 

Gera-IT is specialized in Custom Solutions Development. Since 2006 they enriched their expertise, having delivered 140 projects of different scale with budgets ranging from $5,000 to $2 million. The distribution of clients covers 11 countries, including the US, Canada, Australia, the UK, Germany, France, the Netherlands, Denmark, Belgium and others.