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

João

From Brazil (GMT-3)

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Front-end Web DeveloperMiddle
Back-end Web DeveloperSenior
Full-stack Web DeveloperSenior
Hire developer
8 years of commercial experience
Business intelligence
Credit and lending
Healthcare
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João – React, Ruby, Ruby on Rails

João is a Senior Full-stack Developer with extensive experience in the Ruby stack. While his primary focus is on back-end development, he also has good front-end skills. João excels in problem-solving and analytical thinking. Known for his warm demeanor and excellent communication skills, he works effectively within a team. His passion for coding is evident through personal projects, including an AI-driven tool to assist teachers with lesson planning. João's enthusiasm for continuous learning and development makes him a valuable candidate for any team.

Main technologies
React
5 years
Ruby
7 years
Ruby on Rails
7 years
Additional skills
Golang REST API
Python
JavaScript
Vue.js
Flutter
AWS
Ready to start
Immediately
Direct hire
Potentially possible

Experience Highlights

Senior Back-end Developer
Sep 2023 - Mar 20246 months
Project Overview

This platform connects students in need of psychological support with therapists, offering payment options such as healthcare plans, school coverage, or private pay. The project also involved integrating Zoom, Google Meet, and payment services.

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Responsibilities:
  • Implemented calendar integrations and managed the synchronization process;
  • Diagnosed and resolved application issues, utilizing Google Cloud logging for efficient troubleshooting;
  • Developed unit and integration tests to ensure robust code quality;
  • Led the migration process from a monolithic architecture to microservices.
Project Tech stack:
Ruby on Rails
React
Senior Back-end Developer
Aug 2022 - Aug 20231 year
Project Overview

The company was responsible for organizing coaching sessions to connect therapists with employees. The project included integrations with Zoom and Meet for the sessions, as well as surveys and articles, all aimed at contributing to the well-being of the employees.

Skeleton
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Responsibilities:
  • Developed and maintained front-end projects for both admin and client interfaces;
  • Contributed to the backend API;
  • Diagnosed and resolved application issues, utilizing Google Cloud services to enhance performance and reliability;
  • Created unit and integration tests to ensure high code quality and prevent bugs.
Project Tech stack:
Ruby on Rails
React
Senior Back-end Developer
Apr 2022 - Aug 20224 months
Project Overview

The project focused on providing easy access to loans for US residents.

Skeleton
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Responsibilities:
  • Developed and maintained the application's API;
  • Managed and streamlined the deployment process;
  • Troubleshot and resolved application issues during off hours, ensuring continuous operation;
  • Created unit and integration tests to ensure code quality and functionality;
  • Integrated various third-party providers to enhance the application's features and interoperability.
Project Tech stack:
Ruby on Rails
React
Senior Back-end Developer
Nov 2021 - Mar 20224 months
Project Overview

The project provided the necessary structure for small businesses, especially those that couldn't frequently hire employees. It included scheduling, financial, HR, and other solutions.

Skeleton
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Responsibilities:
  • Developed and maintained front-end features for the project, ensuring a smooth and responsive user experience;
  • Diagnosed and resolved application issues;
  • Wrote unit and integration tests to mitigate bugs and ensure code quality;
  • Worked with integrations like Google Calendar.
Project Tech stack:
Ruby on Rails
React

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