| Detail | For this role |
|---|---|
| Department | Information Technology |
| Level | Entry level |
| Reports to | Technical Lead |
| Direct reports | None |
| Experience | Fresher or up to 2 years in Ruby on Rails development |
Ruby on Rails Developer job description template
Copy this job description, replace the text in square brackets and post it on your careers page or a job portal.
Job title: Ruby on Rails Developer
Department: Information Technology
Reports to: Technical Lead
Location: [City], [office, branch or site]
About the role
A Ruby on Rails Developer builds web applications in Ruby using the Rails framework, known for its conventions and fast development. At the entry level they build models, controllers and views, write features and fix bugs under senior guidance. A good junior Rails developer follows the framework's conventions, uses ActiveRecord well and writes tests. The role sits in a web or product engineering team and reports to a technical lead or senior software engineer, delivering assigned features and learning Ruby and the Rails ecosystem.
Key responsibilities
- Build Rails models, controllers and views from clear tasks and acceptance criteria.
- Use ActiveRecord and migrations to work with the database safely and cleanly.
- Build and consume REST APIs and connect them to frontend or mobile clients.
- Write tests with RSpec or MiniTest for the features you deliver.
- Follow Rails conventions so the codebase stays consistent and easy to maintain.
- Add validation, authentication and authorization using framework features and gems.
- Fix reported bugs and confirm the fix does not affect other features.
- Use background jobs for tasks that should not block the request under guidance.
- Raise clean pull requests and act on review feedback quickly.
- Learn Ruby, Rails patterns and the gem ecosystem with senior support.
Requirements
- Graduate in computer science, IT or engineering
- Working knowledge of Ruby and Rails
- A Rails project portfolio is an advantage
- Fresher or up to 2 years in Ruby on Rails development
KRAs and KPIs for a Ruby on Rails Developer
Key result areas for the appraisal form, each with a KPI you can measure every month or quarter.
| Key result area | How to measure it |
|---|---|
| Delivery | Assigned features delivered within sprint estimates |
| Code quality | Pull requests pass review with limited rework and idiomatic Rails |
| Defect rate | Bugs from own code kept low, with critical defects near zero |
| Test coverage | Features covered by tests to the team target |
| Convention adherence | Code follows Rails conventions with few review corrections |
| Learning | New Ruby and Rails skills picked up each quarter |
Skills and tools
Tools used day to day: Ruby, Rails, PostgreSQL, RSpec, Git, VS Code.
Reporting line and career path
Next roles: Software Engineer, Senior Rails Developer, Full Stack Developer
Interview questions for a Ruby on Rails Developer
- What does convention over configuration mean in Rails?
- How does ActiveRecord map objects to database tables?
- How do migrations help you manage schema changes?
- What is the MVC pattern and how does Rails use it?
- When would you use a background job in Rails?
- Tell me about a Rails feature you built and how you tested it.
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What does a Ruby on Rails developer do?
A Ruby on Rails developer builds web applications in Ruby using the Rails framework. They build models, controllers and views, work with the database through ActiveRecord, build APIs and write tests. At the entry level they deliver assigned features, follow Rails conventions and learn the Ruby and gem ecosystem with support from senior engineers.
Is Ruby on Rails still worth learning?
Yes, in the right places. Rails remains popular for startups and product companies that value fast development and clean conventions, and many Indian firms and global products run on it. The job market is smaller than Java or JavaScript, but Rails developers are in steady demand and the framework teaches strong web development habits.
What makes Ruby on Rails different from other frameworks?
Rails follows convention over configuration, so it makes sensible default choices that let you build quickly without wiring everything by hand. It bundles the database layer, routing, testing and more in one opinionated package. This speed and consistency is why startups like it, though the conventions take some learning to use well.