Looking out to hire a Ruby on Rails developer for your team? Need to know how and where to find the best candidates? Here is a comprehensive guide to finding the best Ruby on Rails developers. Read on!
How to hire a Ruby on Rails Developer?
Before we begin, let us discuss what is a rails developer? Ruby on rail developers is software experts who write, develop, test, and implements software and web applications on the Ruby framework. Ruby on Rails is a framework for creating web-based applications.
The framework helps to develop a full range of functions for the development and operations of web-based applications. Ruby is a back-end programming language. The popularity of web-based applications has increased tremendously in the last few years.
Ruby on rails offers is dynamic, responsive, and flexible platform to programmers. In this blog, we provide useful tips like the best places to hire a Ruby on Rails developer, the skills and qualifications of the ruby developer.
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Hiring market for Ruby on Rails Developer
The significant cost saving and low initial investment make Ruby on Rails a popular technology, which has increased the demand for RoR developers. According to PayScale, the Ruby on the Rails job market has quadrupled in the last five years. Ruby on Rail skills on a developer’s resume can improve his resume.
The Bureau of Labor does not collect data on Ruby Developers, but it has predicted an 8% increase in web developers from 2019 to 2029. Despite the demand, there is a huge shortfall in skilled RoR programmers. The Ruby on Rails developer salary 2015 was still one of the top earners. Presently the salary of Ruby on Rails engineer salary has increased around 80% across the globe.
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Top 15 recent job titles for Ruby on Rails Developers
Now that we know what is a ruby developer, here are the job titles of Ruby on Rails web developer,
1. Software Engineer Ruby
The Ruby on Rail software engineer writes the server-side web application logic in Ruby, around the framework Rails. The salary of a software engineer $96894/year.
2. Junior Ruby Developer
The Junior Ruby Developer is a back-end developer who works on rails, SASS/HTML, Jquery/JCoffee Script, etc. The average salary of the junior ruby developer is $59655/year.
3. Mid-level ROR Developer
The mid-level ruby freelancers should know ActiveRecord Associations, Design Pattern, and Object Orientation. The ROR developer can communicate well with their team and clients when required. The average salary of a middle-level ROR developer ranges from $41000 and $153000 per year.
4. Senior Ruby Developer
Senior Ruby Developer has excellent development skills. They know Open Source software. The developer should mentor developers with less experience and correspond with their clients. They can take the lead in development. The annual salary of the developer is $127382/year.
5. Ruby on Rail Tech Lead
The tech lead has experience in microservice architecture. They have experience in development and deployment. The Ruby on Rail tech lead have advanced programming skills that allow them to deal with bottlenecks. The salary of a tech lead can range from$41500 to $157000/year.
6. Senior Javascript Web Developer
The web developer knows HTML, Javascript, and CSS. They know browsers, Servers, stacks, etc. The annual salary of a javascript developer can range from $23000 to $133500 year.
7. Rail Hacker
Ruby on Rail hackers work on securing the web app and mobile app. They close vulnerability and ensure information from your databases is not compromised. The salary of Ruby on Rail hacker $70000 to $195000.
8. Ruby on Rail Architect
The Ruby on Rail architect designs and develops web-based, real-time and batch-time applications. They interact with the design team and clients to identify requirements for new and existing products. They oversee the development process. The average salary of Ruby on Rail architect $167048/year.
9. Project Manager
The project manager oversees planning and leads the project from idealization to completion. They interact with all the main stakeholders to ensure the project runs smoothly. They are held accountable for the project scope, team, resources, success, and failure of the team. The average salary of a project manager $139218/year.
10. Full-stack Ruby on Rails Developer
A fully stack ruby on rail developers works on the front end and back end of a website or application. They tackle user interface, database integration, and client interactions. The average annual salary of a full-stack rails developer $105,813.
11. Web Application Engineer
The web application engineer designs and develops from conception to structure. The developer codes the concepts into something concrete. They create applications based on the customer’s need The national average salary of a web application engineer $68524/year.
12. Back-end Ruby on Rails Developer
The back-end developer is responsible for the server-side web application logic and integration with the front–end developer. The developer writes the web service and API used by the developer. The average salary of a back-end developer is $70965/year.
13. Server Developer
The server developers help to develop the database, maintain the system and organize the database. They help to manage the architecture and internal content of the system. The aggregate salary of a server developer is $89000/year.
14. Ruby on Rails Consultant
Freelance developers can provide ruby on rails consulting if they have 7 to 9 years of experience. They should have strong knowledge of Ruby on Rails, RESTful web services, and back-ends experience. Working knowledge on various libraries used in Ruby is welcome. The average salary of Ruby on rail consultant $74500/year.
15. Ruby on Rail Mobile App Developer
Ruby on Rail has emerged as a powerful backend OOP language to run your mobile apps. They are responsible for security, data storage, and business logic. The annual salary mobile app developer can range from $19000 to $151000.
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Qualifications to look for in Ruby on Rail developer
A Ruby on Rail developer does not need to have a formal degree. However, most rails programmer Ruby on rails developers usually has a bachelor’s degree in Software engineering, computer science. The best universities in the US for software engineering are,
- Carnegie Mellon University
- Georgia Institute of Technology
- University of California, Berkeley
- University of Illinois, Urbana Champaign
- The University of Texas at Austin
The best universities in the US for computer science are,
- Massachusetts Institute of Technology (MIT)
- Stanford University
- Carnegie Mellon University
- University of California, Berkeley
- University of California, Los Angeles
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Skills to look for in Ruby on Rails Developer
The Ruby developers work on the back-end interface of your web application. The web application or mobile app needs to work seamlessly. You should assess the technical and soft skills of Ruby on Rails programmers before you hire ruby developers. We have listed the top skills for a ruby rails developer,
1. Technical skills
1. Ruby Skills
Ruby is the foundation of writing the Ruby on Rail code. The candidate needs to have sound knowledge of Ruby. They should be familiar with the syntax and strong OOP (Object Oriented Programming) skills.
2. Ruby on Rail Skills
The ROR developer should know core to advanced about Ruby to Rail concepts. You need to determine if the candidate knows MVC or Model/View/Controller framework. The developer should be well-versed with the rules of different layers.
They should know how to insert your business logic and structure into the app. The RoR programmer should know the various libraries like ActiveRecord. They need to know with the REST API.
3. Front-end development skills
The ROR developer needs to have front-end development skills. They need to be familiar with Javascript, HTML, CSS.
4. Database skills
SQL and PostgreSQL/MySQL are used to connect to the database in Ruby on Rails. The rails developer needs to have an in-depth knowledge of the database engine used.
5. Tool handling skills
Website development is not easy, fortunately, various tools can help build a successful web application. Some of the common tools used by rails developers are Git, Docker, CI, and Heroku, and Trello/ Asana/ Pivotal
6. Testing and validation skill
Before a web application is launched the app should clear regressive testing. The developer should be able to use testing tools such as RSpec.
2. Soft Skills
1. Client communication
Ruby on rails freelance candidate should have excellent communication skills. They should be able to communicate clearly with their clients.
2. Learning
The developer should be passionate about programming and keen to improve their skills.
3. Language and culture
The developer may need to handle overseas clients. Your developer should not be rigid about language and development. They should not rigid to a new culture.
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Certifications to look for in Ruby on Rails Developer
Ruby on Rail is an open-source web-based application. Ruby Association Certified Ruby Programmer conducts two examinations,
- Ruby Association Certified Ruby Programmer Silver Version 2.1
- Ruby Association Certified Ruby Programmer Gold Version 2.1
The best Ruby on Rail Courses are,
- Ruby Essential Training from LinkedIn Learning
- Complete Ruby on Rails Developer Course (Udemy)
- Ruby on Rails Development Certification by John Hopkin University (Coursera)
- Ruby on Rail 5 Course for Beginners (LinkedIn Learning)
- Ruby on Rails in 30 days: Build your First Web App (SkillShare)
- Learning Ruby on RailPro (Codeacademy)
- Ruby on Rails Training Course (Simplilearn)
- Ruby on Rail Certification Training (Edureka)
- Agile Development Using Ruby on Rails (Edx)
- Dynamic Web Application with Santara-Ruby Development Fundamentals (Udacity)
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Rate per hour of Ruby on Rails Developer
The salary of Ruby on Rails developers depends on qualifications, certifications, experience, domain, and Ruby on the Rails job description. In the US salary of Ruby on Rails freelance can range from $77000 to $122000. The average salary is $93987/year. The freelance rails developer in hours ranges from $75 to $250 per hour.
In Netherland, the average salary of a Ruby on Rails freelancer can range from 21000 to 69000 Euros per year. In Germany, the rate of a developer is $40-65/hour while salaries in Eastern Europe are $30/hour. If you hire an RoR developer from India, the average salary will be Rs.731807/year. The average salary rails freelance per hour ranges from $25-30/hour.
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Top 10 job boards to find the best Ruby on Rails Developers
Whether you want to hire Ruby on Rails developers or ruby consultants, you need to start somewhere. You can begin by visiting different job boards where you can post requirements for freelance rails developer, part-time, or full-time ruby rails developer. We have listed the top job boards to find a Ruby on Rails programmer,
- Upwork
- Freelancer
- Flexjob
- unremot.com
- Topal
- Guru
- Indeed
- Codementor
- Fiverr
- RemoteOk
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Top 10 companies hiring Ruby on Rails Developer and salaries offered
The top companies hiring hire ruby developer are,
- Toptal – Toptal is a professional matching company created to match freelance ruby on rails developer for your project. Each developer has to clear a screening process. The average salary of the freelance ruby programmer on rails registered on Toptal $83970/year.
- Ruby Garage – Ruby Garage is a leading Ruby on Rails development and consulting firm. The average salary of RoR programmers is $784-$847/month.
- Selleo – Selleo has developed web-based applications for clients all over the world. The average salary of a candidate working at Sellero is $79789/year.
- PolCode – Polcode is a multinational company working Ruby on Rails development. ROR programmers at Polcode $40-$90/hour.
- Shakuro – Shakuro creates mobile apps and websites for eCommerce and other web-based services. The salary ROR developer at Shakuro is $25-$49/hour.
- Railsware – Railsware is a software development company specializing in creating web and mobile-based applications.
- Bancany Technology – Bancany Technology specializing in Ruby on Rail development. They have clients all over the world. The salary of a developer working at Bancany Technology $50000/year.
- Netguru – Netguru produces digital products for a variety of clients.
- Altoros – Altoros is a ROR development company specializing in big data. The Polish company hires remote candidates.
- Exadel – Exadel Inc is a Ruby on Rail company working on IoT development, app development for wearables, machine learning, etc. The average salary at Exadel $128000/year.
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Top 10 interview questions for Ruby on Rails Developer
Before your hire a Ruby on Rail developer you need to interview the candidate. Here are some questions you can ask.
Question 1. What is a ruby on rails developer?
Rationale: This question will help you entry-level candidate knows what their job entails.
Answer: A Ruby by on Rail developer writes the server-side web application in Ruby, around the framework of Rails. Ruby on Rails has become popular very quickly as it reduces the time and effort to build a website.
Question 2: What are class libraries in Ruby?
Rationale: Ruby is an Object-Oriented language any RoR programmer should be able to answer this question.
Answer: Class libraries in Ruby consist of different domains like data types, thread programming, etc.
Question 3: What are the naming conventions in Ruby?
Rationale: This question helps to determine the base knowledge of a ruby freelancer.
Answer: The naming convention is as follows,
- Variables all letters are in lowercase and words should be separated by an underscore.
- Class and module have no underscore and each new word begins with an uppercase letter.
- Database Table should have lower case letters and underscore between letters. All table names should be in plural form.
- Model is represented in unbroken MixedCase and has singular with the table name.
- The Controller class names are represented in plural form, such that OrdersController would be the controller for the order table.
Question 4: What is CSRF? How do Rails protect against it?
Rationale: A mid-level experienced Ruby on Rails developer should be able to answer it.
Answer: CSRF or Cross-site Request Forgery is a form where the attacker submits a form on behalf of different websites that can reveal damaging or sensitive information. The browser includes cookies for every domain request if you were recently logged in to the target site.
The attacker can make it appear as the request comes from you as a logged-in user (as your session cookie will be sent with the request POST request). To protect against CSRF attacks, you can add prtect_from_forgery to your ApplicationController. Rails will request CSRF tokens to be present before POST, PUT, or DELETE request.
The CSRF token is included as a hidden field in every form created using Rails form builder. The header of the form has a GET request and a non-form-based mechanism to send POST requests. This prevents attackers from stealing the CSRF token by the browser’s same-origin policy.
Question 5: What is the difference between false and Nil in Ruby?
Rationale: This question helps to determine the ruby rails developer’s basic knowledge.
Answer: In Ruby false is a Boolean data type while Nil is not a data type it has object_id4.
Question 6: Suppose we have a Student with id = “5” and we delete the Student with id =”5” what will be the result of the following queries?
- Student.find(5)
- Student.find_by_id(5)
Rationale: This question will help you determine if the candidate can handle knows about different errors that can occur while programming.
Answer: Student.find(5) will raise the will raise an error: ActiveRecord::RecordNotFound: Couldn’t find Student with id=5 and Student.find_by_id(5) will return nil and will not raise an error.
Question 7: What are the positive aspects of Rails?
Rationale: A rails freelancer should be aware of the advantages of Rails.
Answer: Rails has several features like,
- Meta-programming: Rails uses code generation but for heavy lifting, it relies on meta-programming. Ruby is considered one of the best languages for Meta-programming.
- Active Record: It saves the object to the database through the Active Record Framework. The Rails version of Active Record identifies the column in a schema and automatically binds them to your domain objects using metaprogramming
- Scaffolding: Rails can create scaffolding or temporary code automatically
- Convention over configuration: Unlike other development framework, Rails does not require much configuration, if you follow the naming convention carefully
- Three environments: Rails comes with three default environment testing, development, and production.
- Built-in-testing: It supports code called harness and fixtures that make test cases to write and execute.
Question 8: What is the role of sub-directory app/controllers and app/helpers?
Rationale: This helps you know if the candidate is familiar with the structure of Ruby on Rails.
Answer: App/controllers is a Web request from the user is handled by the Controller. The controller sub-directory is where Rails looks to find controller classes.
App/helpers: The helper’s sub-directory holds any helper classes used to assist the view, model, and controller classes.
Question 9: What is Yield in Ruby on Rails?
Rationale: This is a basic question that the RoR developer should answer.
Answer: Yield is a Ruby method that receives a code block invokes it by calling it with the “Yield”.
Question 10: How do Rails implement Ajax?
Rationale: This question explores the familiarity with Rails.
Answer: Rails trigger an Ajax Operation in the following ways,
- Some trigger fires: The trigger could be a user clicking on a link or button, the users inducing changes to the data in the field or on a form
- Web client calls the server: A Java-script method, XMLHttpRequest, sends data linked with the trigger to an action handler on the server. The data might be the ID of a checkbox, the whole form, or the text in the entry field
- The server does process: The server-side action handler does something with the data and retrieves an HTML fragment to the web client
- The client receives the response: The client-side JavaScript, which Rails generate automatically, receives the HTML fragment and uses it to update a particular part of the current
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