Carlos Ferreira da Silva

A Ruby on Rails application with an API on the server side, and an Angular and Bulma application on the client side.

I've participated in every part of this project—which includes both sides of the application, plus the administrative panel, a secondary application to handle assessment tests, and all the infrastructure setup for staging and production environments. I was able to conduct the creation of an SDK for the secondary application, work with queue tools, set up AWS and Heroku environments, practice code reviews, follow pull requests, and participate in all the architectural decisions.

I've created this gem to improve the methods and add new features to Rails Active Record using PostgreSQL. Some are simple, like the DISTINCT ON SQL command translated to the Relation method, and others are more complex, like composite data types.

A PHP sample code that shows a base class that helps communicate and exchange data using the database's binary connector. Each operation that can be performed on the database extends this class and uses the available methods to be correctly performed.

This sample shows how I like to comment on code—keeping it perfectly standardized and organizing my classes. Although this was written in 2014, it's still an excellent example of my work.

A huge RoR application, which handles an even bigger amount of data every day in an almost-live response time. This is an international work experience where I was able to put all my cutting-edge knowledge about Rails and PostgreSQL in practice—especially on tasks that I had to improve the performance so that the live graphs were able to load in a very short time. During this project, I mostly created new features and reports, rewrote some legacy code, and improved the performance in several areas.

A project that I've worked in the last year, built using RoR and Bootstrap. A good example of a simple website with an administrative panel and all sorts of tools that can be used in all kinds of projects.

A PHP application using Drupal and set up to be used as an eCommerce website to sell short-length courses online or face-to-face. I installed and put online the very first version of this website in 2014.

A fresh new implementation of a GraphQL server that relies on Rails resources and helpers, plus it uses a self-implemented query parser written using the C-side of Ruby. The gem includes several APIs and facilitators to translate Rails resources into GraphQL resources.