I will build a ruby on rails API or web application


About this gig
Need a Rails developer who understands production systems, not just tutorials?
I specialize in building Ruby on Rails applications REST APIs, SaaS backends, internal tools, and full-stack web apps. Clean architecture, solid test coverage with RSpec, and code that scales. I've shipped Rails apps handling real traffic across B2B SaaS, fintech, and e-commerce.
What I work with: Ruby on Rails 7+, PostgreSQL, Redis, Sidekiq, RSpec, Hotwire / Turbo, ActiveAdmin, Devise, Pundit, AWS (S3, EC2, RDS), Docker
What you get:
- RESTful or GraphQL API built to standard conventions
- Background job processing (Sidekiq) where needed
- Auth system (Devise / JWT / OAuth)
- RSpec test suite with model, request, and service specs
- Deployment-ready code (Heroku, Render, or AWS)
Whether you need a greenfield Rails app, API-only backend for a React frontend, or help with an existing codebase message me first with your scope.
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Get to know Ali Ammaar
Senior Software Engineer Ruby on Rails PostgreSQL Sidekiq React GraphQl
- FromPakistan
- Member sinceMay 2018
- Last delivery6 years
Languages
English
FAQ
Can you build an API-only Rails backend for my React/Vue frontend?
Yes, this is a common setup I do regularly. I use Rails in API mode with JWT auth and proper CORS configuration.
Do you write tests?
Always. I write RSpec specs covering models, service objects, and request specs as standard. Test coverage is not optional for me.
Can you help with an existing Rails codebase?
Yes. Send me a description of the issue or a brief code review request. Legacy Rails upgrades, performance issues, and architecture improvements are all in scope.
Do you use Hotwire / Turbo?
Yes, for Rails-native frontends. If you want a reactive UI without a JS framework, Hotwire is an excellent choice and I'm comfortable with it.
What databases do you work with?
Primarily PostgreSQL. I also work with Redis for caching and Sidekiq queues. Can integrate with external data sources and third-party
11 reviews for this Gig
| (10) | ||
| (1) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
Sort By
S skumar79
Repeat Client

United States
Thank you, I will need ur help for soMe time, avoid new work for Atleast 2 months
Helpful?U user02665377
Repeat Client

United States
Good guy. Gave me a rushed job. Wanted to keep him around for longer, but the last job was rushed.
Helpful?U user02665377
Repeat Client

United States
Helped me 4 times
Helpful?U user02665377
Repeat Client

United States
Ali is very knowledgeable and has been helping me so much.
Helpful?U user02665377
Repeat Client

United States
You’re the man. I’ll be hiring you a lot more.
Helpful?
11 reviews for this Gig
| (10) | ||
| (1) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
Sort By
S skumar79
Repeat Client

United States
Thank you, I will need ur help for soMe time, avoid new work for Atleast 2 months
Helpful?U user02665377
Repeat Client

United States
Good guy. Gave me a rushed job. Wanted to keep him around for longer, but the last job was rushed.
Helpful?U user02665377
Repeat Client

United States
Helped me 4 times
Helpful?U user02665377
Repeat Client

United States
Ali is very knowledgeable and has been helping me so much.
Helpful?U user02665377
Repeat Client

United States
You’re the man. I’ll be hiring you a lot more.
Helpful?

