Hello, I’m Bruno Costanzo
Ruby on Rails developer. Specialized in TDD, state machines, and design patterns.
My Experience
I’m currently working as a Full Stack Developer at Renuo AG since July 2025, a software agency specialized in Ruby on Rails based in Zurich, Switzerland.
Previously, I worked remotely for Unagi Software (2022-2025), a service company that provided development services to various international companies. During my 3 years there, I participated in several projects as the lead developer, including Sayge (professional coaching platform), Blackbook Travels (hotel management), Patrimore, and various internal projects like DOFF (license management) and Ruberto (an open source gem that integrates Uber with Rails).
Technologies
I work primarily with Ruby, Rails, RSpec, Kamal, PostgreSQL, SQL, Hotwire, and Stimulus.
Languages
I am fluent in English and Spanish, with intermediate Italian.
Location
I currently live in Zurich, Switzerland.
What will you find on this blog?
- Technical articles about Ruby on Rails
- Design patterns and best practices
- Software development reflections
- Experiences working with international teams
Contact
If you want to get in touch with me, you can do so through the contact page.