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Fiverr Pro
English
$
USD
I will develop, fix, or optimize your ruby on rails application
Andrii H
About this gig
Hi, I am a Ruby on Rails developer with 4+ years of commercial experience in building, maintaining, and optimizing SaaS applications.
I can help you with Ruby on Rails backend development, bug fixing, API development, database optimization, background jobs, and refactoring existing code.
What I can do for you:
- Develop new Ruby on Rails features
- Fix bugs in existing Rails applications
- Build or improve REST APIs
- Work with PostgreSQL, SQL queries, and database optimization
- Add background jobs with Sidekiq
- Write or improve RSpec tests
- Refactor legacy code
- Improve application performance and memory usage
- Integrate third-party services and APIs
- Work with Docker-based development environments
My main stack:
Ruby, Ruby on Rails, RSpec, PostgreSQL, Sidekiq, REST API, Docker, JavaScript, Git, Linux.
I have experience working on SaaS and financial automation projects, including performance optimization and maintaining production-level backend systems.
Please contact me before placing an order so we can discuss your requirements, estimate the task, and choose the best package.
Get to know Andrii H
Andrii H
Ruby on Rails Developer
- FromUkraine
- Member sinceMar 2026
Languages
Ukrainian, English
I am a results-driven developer with 10+ years in software engineering and 4+ years focused on building scalable, high-availability SaaS services with Ruby on Rails. I have strong skills in Ruby/Rails, RSpec, Docker, Kubernetes, and JavaScript.
FAQ
Can you work with an existing Ruby on Rails project?
Yes. I can work with existing Ruby on Rails applications, fix bugs, add features, improve APIs, refactor code, and optimize performance.
Do you write tests?
Yes. I can write or improve RSpec tests for models, services, controllers, requests, and background jobs.
Can you optimize Rails application performance?
Yes. I have experience with memory and performance optimization, SQL query optimization, background jobs, and backend refactoring.
Can you work with Docker?
Yes. I can work with Docker-based development environments and help with basic setup or troubleshooting.
Do I need to contact you before ordering?
Yes, please contact me first. This helps clarify the requirements, estimate the scope, and avoid misunderstandings.
