Carlos – Ruby on Rails, Ruby, React

The app that enables banks, brands, enterprises, and aspiring fintech to create card programs designed to become the default card in a consumer's mobile wallet.

• Integrated system with third-party payment platform processing;
• Debugged and resolved the application issues;
• Improved code coverage and code quality using SimpleCov and RubyCritics;
• Migrated front-end to new frameworks;
• Mentored and onboarded new developers.

The app for workflow management software for auto repair shops, allowing them to increase productivity through online order-taking, inventory management, and reports/analytics.

• Integrated the internal system to third-party APIs platforms, such as a taxation platform in Brazil;
• Implemented internationalization support of the APIs and front-end;
• Wrote Unit test with RSpec and integration test with Capybara;
• Delivered bug fixes and resolved application issues.

A property tax management system. It is used to help the city hall register information about all the buildings in the city and provide accurate tax information to the citizens.

• Maintained React front-end by adding layers to the maps, providing the final users with several options to visualize the data;
• Maintained a project management platform using Rails 4;
• Improved the loading time by 50% by reducing the number of calls to the database;
• Researched the architecture to find the 'N + 1' queries to load the information to memory when possible;
• Handled daily bug fixes, hotfixes, and feature implementation;
• Improved test coverage using RSpec.

Consulting Company. Some of my main projects are:

• A CRM for laboratories to manage their patients and staff (Rails 6 / React consuming from the Rails Rest API)
• A responsive web app with React / Firebase / NodeJS for smart-city management for more than 10 cities in Mexico
• A platform for one of the main political parties in Mexico to manage canvassing, reports, and register supporters to join the party

• Worked with multiple clients on cross-platform applications with React and Ruby on Rails;
• Managed a team of 3 developers in different development projects.