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Carlos – Ruby on Rails, Ruby, React, experts in Lemon.io

Carlos

From Brazil

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Back-end Web DeveloperSenior
Hire developer
5 years of commercial experience
Banking
Consulting services
Fintech
Management
Productivity
Public services
Retail
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Carlos – Ruby on Rails, Ruby, React

Carlos is a skilled Software Developer with a passion for using programming to address challenges. While he has chosen to specialize in Ruby, he also has commercial experience with React. Carlos excels as a solo developer, though he is equally capable of contributing to team efforts. His outgoing nature makes him easy to communicate with, and he also brings experience in mentoring developers.

Main technologies
Ruby on Rails
3 years
Ruby
3 years
Additional skills
React
JavaScript
Typescript
Backbone.js
PostgreSQL
Firebase
Redux
SQL
Python
Linux
AWS
Redis
Vue.js
REST API
Ready to start
ASAP
Direct hire
Potentially possible

Experience Highlights

Back-End Software Developer
Jul 2021 - Sep 20221 year 1 month
Project Overview

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.

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Responsibilities:
  • 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.
Project Tech stack:
Ruby on Rails
React
PostgreSQL
Ruby
Full-Stack Software Developer
Dec 2020 - Jul 20216 months
Project Overview

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

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Responsibilities:
  • 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.
Project Tech stack:
React
Backbone.js
Ruby on Rails
PostgreSQL
Full-Stack Software Developer
Jan 2020 - Aug 20206 months
Project Overview

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.

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Responsibilities:
  • 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.
Project Tech stack:
React
Ruby on Rails
Software Developer
May 2016 - Dec 20193 years 7 months
Project Overview

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
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Responsibilities:
  • Worked with multiple clients on cross-platform applications with React and Ruby on Rails;
  • Managed a team of 3 developers in different development projects.
Project Tech stack:
React
Firebase
Ruby on Rails
JavaScript

Education

2017
Electrical and Computer Engineering
BSc

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