Profile of Leonardo O.

Leonardo O. Senior Software Developer
3 years experience Brazil
Availability: Full time and part time
50.00$ /hr
ReactReact HooksReact NativeWooCommerceWooCommerce Plugins Development

A career in development in Information Technology, a senior PHP developer with extensive experience in managing web projects, implementing and maintaining systems in various programming languages, managing teams and implementing improvements, and developing internal and external trajectories processes method.




Department Coordinator | March 2021 – Present

This service aims to improve the operational functioning of the activities of organizations, preserving the level of routines considered adequate for the training and remodeling of those in which the processes are inefficient in the face of operational demand. In other words, they mean perfecting, organizing methods and activities after due layout studies, forms, documents, operating flows, etc.

Essential activities:

  • Implementation of a new ticket system via WhatsApp, using Node.JS, TypeScript, and React Native, allowing the use of the same WhatsApp support for several attendants in the company’s support department.
  • Took the lead to change the scenario for implementing new features, migrating all the company’s repositories located on GitHub to GitLab to use GitLab’s features better.
  • He took the lead in creating a new server for testing (until then, cPanel accounts used for testing on the central server), making the environment, installing the server in the Ubuntu Server architecture, installing Plesk to manage and, for coding, installing Nginx and PHP 7.4 on the test server so that all DEVS in the company can have their SSH and SFTP user to perform all necessary tests at the server level.
  • He took the lead to deploy CI/CD in the company, using GitLab and installing both on the production server and the test server, the GitLab-runner, making all the configurations for the Continuous Integration of projects and stores happen in an ideal way.
  • Creation of several WordPress plugins and management of the development team, coordinating projects using the knowledge acquired through Green Belt certifications in Six Sigma and Scrum Master, to manage the IT team, ensuring good productivity and low sigma error rate in production.


Junior Programmer | December 2020 – March 2021

This service aims to develop plugins for WordPress, approve new plugins, create new virtual stores, meet the company’s development demands, integrate virtual stores with and integration with ERPs, either through APIs or SQL, using PHP, JavaScript, jQuery, HTML, and CSS.

In other words, it meets the company’s backend development demands.


Abraço de Xale | May 2021 – Jun 2021

Software Programmer

Development of a virtual store for craft sales, integrated with Instagram and Facebook catalog, meeting all the client’s needs to promote a more significant sales reach throughout Brazil.
Integrated platform with Google Search, Google Analytics, Google Ads, Google AdSense, Instagram, and Facebook Product Feed, several payment methods, all types of shipping on the market.


Positive English School | February 2021 – April 2021

Software Programmer

Development of EAD, E-Commerce and Blog platform, integrated with the store’s main website, also developed in this process. The school can sell online courses and provide courses for its students through the E-Commerce platform, sell the school’s products (uniforms, materials, etc.), and keep all customers updated /students registered through new blog posts.
Integrated platform with Google Search, Google Analytics, Google Ads, Google AdSense, Instagram, and Facebook Product Feed, several payment methods, all types of shipping on the market.


Vertex Inc. | September 2020 – December 2020

Technical Support Specialist

As its primary function, this service served customers through calls on the support platform, managed tickets, and ensured the end customer’s problem resolution.

Together with the development team, he showed prominence in his programming ability, where he created Software to manage tickets created via WhatsApp. Through this, he coordinated and managed the entire programming team for the market launch of the new software designed.


Jadson Heleno – Presidente da Câmara de Ipatinga | October 2020 – November 2020

Software Programmer

Revamp of the website, adapting new styles for the 2020 electoral campaign.


Vereador Daniel Guedes | September 2020 – November 2020

Software Programmer

Pre-developed and adapted software to meet mass marketing via WhatsApp to improve advertising during the election seasons.



Software Programmer

Develop an online platform for converting Excel tables to work with HTML forms, inserting the entire table into a database, thus allowing better management of tables/items registered on the platform and allowing sharing via custom URL per table to customers.


Câmara Municipal de Ipatinga Contract | November 2019 – November 2020

Software Programmer

Developed automatic mass mailing software for WhatsApp numbers developed and provided by a previous developer.


EMBRAFLEX EMBALAGENS | April 2020 – August 2020

Software Programmer

Development of a Chat-Bot service, integrated with WhatsApp, Instagram, Telegram, and Messenger, to organize customer service processes and activities, managing and creating performance reports for all agents redirected by the platform.


Jadson Heleno | March 2020 – April 2020

Software Programmer

We developed a new website, fully styled and suitable for new mobile modalities, meeting requests to create new features for posting recent posts.




Universidade Federal de Minas Gerais | 2021 – 2027

Bachelor of Systems Engineering – Systems Engineering


Harvard University | 2020 – 2025

Distance Learning – Computer Science



Colégio Educacional de Suplência e Técnico – CEST | 2018 – 2019

Computer Technician


Escola Estadual Hebert José de Souza | 2017 – 2020

High School Diploma




Digital Innovation One Inc. | July 2021

Boas-vindas ao Bootcamp Santander Fullstack Developer

Credential ID 1E2CBF70

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Grupo GFT | June 2021

Aceleração Global Dev #10 GFT

Credential ID 441E44A3

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Digital Innovation One Inc. | June 2021

Desenvolvendo um sistema de gerenciamento de pessoas em API REST com Spring Boot

Credential ID 0158889C

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Digital Innovation One Inc. | June 2021

Desenvolvimento de testes unitários para validar uma API REST de gerenciamento estoques de cerveja

Credential ID 35E25F3E

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Grupo GFT | June 2021


Credential ID AE0C019F

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Digital Innovation One Inc. | June 2021

Introdução prática a computação em nuvem usando AWS

Credential ID 45BBA683

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Digital Innovation One Inc. | June 2021

Java – Trabalhando com Collections

Credential ID 171BD21E

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