Ruby on Rails developer building and maintaining production applications with a focus on long-term maintainability, operational stability, and incremental delivery.
I design, ship, and operate real-world Rails systems.
- Build MVPs and SaaS applications in Ruby on Rails
- Maintain and extend existing Rails codebases
- Improve test coverage and regression safety
- Investigate and resolve production issues
- Deploy and operate applications in Linux environments
- Deliver features safely and incrementally
Production Rails application demonstrating:
- Authentication and user management (Devise)
- JSON API architecture
- Progressive Web App (PWA) integration
- Automated regression testing (RSpec)
- PostgreSQL-backed persistence
- Live production deployment (Dokku)
Repository: https://github.com/jimenezmiguela/jesus_restaura Live App: https://jesusrestaura.com/
Full-stack Rails application with separate API architecture and live deployment.
Repositories:
https://github.com/jimenezmiguela/Help_Find
https://github.com/jimenezmiguela/Help_Find_Back
Live App: https://helpfind.onrender.com/
Two years contributing to and maintaining a real-world Rails application in a structured apprenticeship environment, including:
- Feature development
- Bug fixing and regression prevention
- Database migrations and schema design
- Security hardening
- Production incident investigation
- Long-term system maintenance
(See case study repository for details.)
- Ruby on Rails
- PostgreSQL
- RSpec
- Devise
- RESTful APIs
- Progressive Web Apps (PWA)
- Dokku / Linux deployment
- Render deployment
info [at] miguelajimenez [dot] com
Open to freelance Ruby on Rails work.


