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Hire Dream Ruby Developers In 72 Hours

Get access to dream Ruby Developers, engineers and architects from Flexiple, handpicked through a 5-hour evaluation process.

Clients rate Flexiple Ruby developers 4.8 / 5 on average based on 11,137 reviews.

  1. Hire Ruby Developers

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100+ fast-growing companies love Flexiple!

Team work makes dreamwork. Flexiple helps companies build the best possible team by scouting and identifying the best fit.

“I’ve been pleased with Purab’s performance and work ethics. He is proactive in flagging any issues and communicates well. The time zone difference is huge but he provides a sufficient overlap. He and I work together very well and I appreciate his expertise.”

Paul Cikatricis

UX and Conversion Optimization Lead

“Flexiple has exceeded our expectations with their focus on customer satisfaction! The freelancers are brilliant at what they do and have made an immense impact. Highly recommended :)”

Henning Grimm avatar

Henning Grimm

Founder, Aquaplot

“Overall Flexiple brought in high-level of transparency with extremely quick turnarounds in the hiring process at a significantly lower cost than any alternate options we had considered.”

Kislay Shashwat avatar

Kislay Shashwat

VP Finance, CREO

“Todd and I are impressed with the candidates you've gathered. Thank you for your work so far. Thanks for sticking within our budget and helping us to find strong talent. Have loved Flexiple so far — highly entrepreneurial and autonomous talent.”

William Ross avatar

William Ross

Co-Founder, Reckit

“The cooperation with Christos was excellent. I can only give positive feedback about him. Besides his general coding, the way of writing tests and preparing documentation has enriched our team very much. It is a great added value in every team.”

Moritz Gruber avatar

Moritz Gruber

CTO, Caisy.io

“Flexiple spent a good amount of time understanding our requirements, resulting in accurate recommendations and quick ramp up by developers. We also found them to be much more affordable than other alternatives for the same level of quality.”

Narayan Vyas avatar

Narayan Vyas

Director PM, Plivo Inc

“It's been great working with Flexiple for hiring talented, hardworking folks. We needed a suitable back-end developer and got to know Ankur through Flexiple. We are very happy with his commitment and skills and will be working with Flexiple going forward as well.”

Neil Shah avatar

Neil Shah

Chief of Staff, Prodigal Tech

“Flexiple has been instrumental in helping us grow fast. Their vetting process is top notch and they were able to connect us with quality talent quickly. The team put great emphasis on matching us with folks who were a great fit not only technically but also culturally.”

Tanu V avatar

Tanu V

Founder, Power Router

“Flexiple has exceeded our expectations with their focus on customer satisfaction! The freelancers are brilliant at what they do and have made an immense impact. Highly recommended :)”

Henning Grimm avatar

Henning Grimm

Founder, Aquaplot

“Overall Flexiple brought in high-level of transparency with extremely quick turnarounds in the hiring process at a significantly lower cost than any alternate options we had considered.”

Kislay Shashwat avatar

Kislay Shashwat

VP Finance, CREO

“Todd and I are impressed with the candidates you've gathered. Thank you for your work so far. Thanks for sticking within our budget and helping us to find strong talent. Have loved Flexiple so far — highly entrepreneurial and autonomous talent.”

William Ross avatar

William Ross

Co-Founder, Reckit

“The cooperation with Christos was excellent. I can only give positive feedback about him. Besides his general coding, the way of writing tests and preparing documentation has enriched our team very much. It is a great added value in every team.”

Moritz Gruber avatar

Moritz Gruber

CTO, Caisy.io

“Flexiple spent a good amount of time understanding our requirements, resulting in accurate recommendations and quick ramp up by developers. We also found them to be much more affordable than other alternatives for the same level of quality.”

Narayan Vyas avatar

Narayan Vyas

Director PM, Plivo Inc

“It's been great working with Flexiple for hiring talented, hardworking folks. We needed a suitable back-end developer and got to know Ankur through Flexiple. We are very happy with his commitment and skills and will be working with Flexiple going forward as well.”

Neil Shah avatar

Neil Shah

Chief of Staff, Prodigal Tech

“Flexiple has been instrumental in helping us grow fast. Their vetting process is top notch and they were able to connect us with quality talent quickly. The team put great emphasis on matching us with folks who were a great fit not only technically but also culturally.”

Tanu V avatar

Tanu V

Founder, Power Router

Clients

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Frequently Asked Questions

View all FAQs

What is Flexiple's process?

Our process is fairly straightforward. We understand your requirements in detail and recommend freelancers per your specific needs. You can interview the freelancers we recommend though they are already vetted by us rigorously. Once you like someone and decide to work with them, we draw up a tripartite agreement. You work directly with the freelancer, just the invoicing is done by Flexiple.

Is there a project manager assigned to manage the resources?

Our core strength is with freelance developers and designers. Though we do have senior engineers who can work as tech leads, project managers are not part of our offering.

What is Flexiple's model?

We typically work on an hourly model of upwards of US$30 per hour. For full-time longer term engagements, we can also work on a monthly model of upwards of US$5000 per month.The rates vary depending on the skill sets, experience level and location of the freelancer.

What are the payment terms?

- In the hourly model, the invoice is raised weekly/ fortnightly and is payable within 3 days of receipt of invoice.
- In the monthly model, the invoice is raised monthly and is payable within 7 days of receipt of invoice.

Are there any extras charges?

The hourly/ monthly rate shared is all-inclusive. No additional charges other than taxes are applicable.

How does Flexiple match you with the right freelancer?

Based on your requirements, we look for suitable freelancers based on:
- Tech fit: Proficiency in the tech stack you need, Recent work on stack, Work in a similar role
- Culture fit: Worked in similar team structure, Understanding of your company's industry, product stage.

How to Hire Top Ruby on Rails Developers?

Hiring top Ruby developers is crucial for building robust, scalable, and high-performance web applications. Ruby, particularly through the Ruby on Rails framework, is a popular choice for developing web applications quickly and efficiently. This guide provides essential tips on how to find and hire the best Ruby developers to ensure the success of your projects.

What is a Ruby on Rails Developer?

A Ruby developer is a software engineer who specializes in using the Ruby programming language to build and maintain web applications. Ruby developers often work with the Ruby on Rails framework, which streamlines the development process by providing default structures for databases, web services, and web pages. Their responsibilities include designing, coding, testing, and deploying applications, as well as troubleshooting and optimizing performance. Ruby developers are known for their ability to write clean, efficient, and maintainable code, making them valuable assets for any development team.

Skills of Ruby on Rails Developers

To hire top-tier Ruby developers, look for specific skills and expertise that ensure they can deliver high-quality, functional, and scalable applications:

  • Proficiency in Ruby: Deep understanding of the Ruby language, including syntax, object-oriented programming, and standard libraries.
  • Experience with Ruby on Rails: Expertise in using the Ruby on Rails framework to develop web applications, including knowledge of MVC architecture, ActiveRecord, and RESTful APIs.
  • Database Management: Skills in managing relational databases (e.g., PostgreSQL, MySQL) and using ActiveRecord for database interactions.
  • Front-End Technologies: Basic understanding of HTML, CSS, JavaScript, and front-end frameworks (e.g., React, Vue.js) to collaborate effectively with front-end developers.
  • Testing and Debugging: Proficiency in using testing frameworks like RSpec and Minitest, and debugging tools to ensure code quality and reliability.
  • Version Control Systems: Experience with Git for version control and collaborative development.
  • Performance Optimization: Ability to profile and optimize applications for better performance and scalability.
  • Security Best Practices: Knowledge of security measures to protect applications from common vulnerabilities.
  • Problem-Solving Skills: Strong analytical and troubleshooting skills to resolve issues efficiently.

Cost of Hiring Ruby on Rails Developers

The cost of hiring Ruby on Rails developers varies based on their experience, location, and the complexity of the project. On average, Ruby on Rails developers charge:

  • Junior Developers: $20 - $50 per hour
  • Mid-level Developers: $50 - $100 per hour
  • Senior Developers: $100 - $200 per hour

Freelancers and developers from regions with lower living costs may charge less, while experienced developers or those from high-cost regions may charge more. Balancing cost with the quality and expertise needed for your project is crucial.

How to Hire the Best Ruby on Rails Developers

Finding and hiring the best Ruby on Rails developers requires a strategic approach. Here are the steps to follow:

  • Define Project Requirements: Clearly outline your project’s scope, objectives, and the specific skills required.
  • Craft an Effective Job Post: Create a detailed job description to attract qualified candidates.
  • Review Portfolios: Examine candidates’ portfolios to assess their experience and quality of previous work.
  • Conduct Technical Assessments: Use coding tests and technical interviews to evaluate their proficiency in Ruby on Rails and related technologies.
  • Behavioral Interviews: Assess their soft skills, such as communication, teamwork, and problem-solving abilities.
  • Check References: Verify their professional background and past performance by checking references from previous employers or clients.
  • Trial Projects: Consider assigning a small trial project to evaluate their real-world skills and work ethic.
  • Ensure Cultural Fit: Ensure the candidate’s values and work style align with your company’s culture for seamless integration.
  • Evaluate Remote Work Skills: If hiring remotely, evaluate their ability to work effectively in a remote environment.
  • Provide Competitive Compensation: Offer a competitive salary and benefits package to attract and retain top talent.

How to Write a Ruby on Rails Developer Job Description for Your Project

A well-crafted job description is essential to attract top Ruby on Rails talent. Here’s how to create an effective job post:

  • Clear Title: Use a specific job title like “Senior Ruby on Rails Developer” to attract the right candidates.
  • Job Overview: Provide an overview of the role, including key responsibilities and the impact they will have on the project.
  • Responsibilities: Outline the main tasks, such as developing web applications, managing databases, and integrating APIs.
  • Required Skills: List the essential technical skills, including proficiency in Ruby on Rails, database management, and front-end technologies.
  • Preferred Skills: Mention any additional skills that are beneficial, such as experience with cloud services or front-end frameworks.
  • Company Information: Include details about your company, its mission, culture, and the benefits of working with your team.
  • Project Details: Describe the project, its goals, and any unique challenges or opportunities it presents.
  • Location and Work Environment: Specify whether the role is remote, on-site, or hybrid, and provide information about the work environment.
  • Application Process: Clearly state how candidates should apply, what materials they need to submit, and any deadlines.
  • Compensation and Benefits: Highlight competitive salary, benefits, and any other perks that make your offer attractive.

Best Practices to Conduct a Successful Technical Interview

Conducting a successful technical interview is crucial to assess a candidate's technical skills and problem-solving abilities. Here are some best practices:

  • Prepare Technical Questions and Exercises: Create a set of technical questions and coding exercises that reflect the skills and challenges relevant to your project.
  • Evaluate Problem-Solving Skills: Assess the candidate’s ability to approach and solve problems efficiently.
  • Test Practical Knowledge: Use real-world scenarios to evaluate how candidates apply their knowledge to practical situations.
  • Assess Communication Skills: Evaluate how well candidates explain their thought processes and solutions.
  • Provide Feedback: Offer constructive feedback to candidates based on their performance.

Ruby on Rails Interview Questions to Ask

  • Can you explain the MVC architecture in Rails? The MVC (Model-View-Controller) architecture in Rails is a design pattern that separates the application into three interconnected components. The Model handles the data and business logic. It interacts with the database and defines the structure of the data and how it is manipulated. The View is responsible for presenting the data to the user. It generates the HTML, JSON, or other formats required for the front end. The Controller acts as an intermediary between the Model and the View. It processes incoming requests, performs operations using the Model, and determines which View to render. This separation of concerns makes it easier to manage and scale applications.
  • How do you optimize a Rails application for performance? Optimizing a Rails application involves several strategies. First, caching is essential; using fragment caching, action caching, or low-level caching can significantly reduce load times. Database optimization is another critical area, which includes indexing, query optimization, and avoiding N+1 query problems. Using background jobs for long-running tasks ensures that the user interface remains responsive. Additionally, employing a content delivery network (CDN) for static assets and minimizing asset pipeline compilation time can help. Monitoring and profiling tools like New Relic or Skylight can provide insights into performance bottlenecks and areas for improvement.
  • What is the difference between include, extend, and prepend in Ruby? In Ruby, include is used to add a module’s methods as instance methods in a class. This means that the methods defined in the module become available to instances of the class. extend adds a module’s methods as class methods, making them available on the class itself rather than its instances. prepend is similar to include but it adds the module’s methods before the class’s own methods in the method lookup chain. This means that if a method is defined both in the class and in the module, the one in the module will be called first. These mechanisms allow for flexible and reusable code design.
  • How do you handle background jobs in Rails? Background jobs in Rails are typically handled using libraries like Sidekiq, Resque, or Delayed::Job. These libraries allow you to offload time-consuming tasks, such as sending emails, processing files, or interacting with external APIs, to background processes. To implement background jobs, you define a worker class that includes the code for the task. This worker class is then enqueued from the application code when needed. Using these libraries, you can manage job queues, retries, and error handling. Sidekiq, for instance, leverages Redis for managing its job queue and provides a web interface for monitoring job status.
  • What are your best practices for writing tests in Rails? Writing tests in Rails involves using frameworks like RSpec or Minitest. Best practices include writing both unit tests and integration tests to cover different parts of the application. Unit tests focus on individual models, controllers, and helpers, ensuring that each component works as expected. Integration tests, on the other hand, test the interaction between different parts of the application, including the full request-response cycle. Using factories (with FactoryBot) to create test data and ensuring test isolation by cleaning the database between tests are also important. Additionally, writing descriptive and meaningful test cases and regularly running the test suite to catch regressions early are crucial for maintaining code quality.

Conclusion

Hiring the best Ruby developers is a strategic investment that can significantly impact the success of your web applications. By understanding the role and skills of Ruby developers, following a structured hiring process, and using best practices for technical interviews, you can find and hire the right talent to build and maintain robust, scalable, and efficient web applications. With the right Ruby developer, you can enhance the user experience, drive business growth, and achieve your project goals.

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