During my career i have worked with multiple technologies, and to some, i have even helped by being directly involved in the product design, but for others, just atomic changes and pull requests. You can see below a list of the projects that have become a little bit better  because of my implication.

Ruby and Rails

• Provided the MySQL knowledge for the ActiveRecord Forcible Index for MySQL gem
• Pull requests to Decidim Core
• Pull requests to Typus: Admin Panel for Ruby on Rails applications
• Pull requests to Decidim Calendar Module
• Pull requests to Decidim NavBar Module
• Pull request to Ruby Power Tools
• Pull request to Wisper::ActiveRecord
• Pull request to globalize3_helpers
• Pull requests to Rails
• Pull requests to graphql-docs

PHP

• Contributions to Vespolina – Symfony2 ecommerce platform
• Ecommerce plugin for Symfony 1.2 Doctrine https://github.com/alecslupu/sfdoctrineshop
• Feature added to https://github.com/mautic/mautic/