Jonatas Souza

Senior Full-Stack Developer

Toledo, Paraná, Brazil

Professional Summary

A Full-Stack Developer with over 10 years of experience crafting robust and scalable technology solutions. I have extensive expertise across a wide array of front-end and back-end technologies, including .NET, JavaScript, Angular, React (ReactJS & ReactNative), PHP, Laravel, and Node.js. My career is defined by technical leadership, legacy system optimization, and the successful delivery of complex projects with a focus on performance and quality. I am seeking opportunities to apply my skills to develop innovative, high-impact products.

Core Competencies

Front-End

ReactJS Angular React Native TypeScript JavaScript HTML5 CSS3 Bootstrap

Back-End

Node.js .NET PHP Laravel MongoDB

DevOps & Cloud

AWS CI/CD Docker

Extensions

Chrome Extensions Manifest V2 & V3

Databases

MongoDB SQL Server

Methodologies

Selenium Scrum Git

Professional Experience

Vice President of Technology Development

Vengreso Jan 2025 - Present Current
  • Lead Vengreso's technology strategy and execution across front-end, back-end, DevOps, and security.
  • Direct the development of enterprise-grade solutions using Angular, React, PHP, Laravel, Node.js, and MongoDB.
  • Spearhead the refactoring of hundreds of thousands of lines of code to improve performance, scalability, and maintainability.
  • Introduced automated testing frameworks to increase product reliability and reduce deployment times.

Manager of Application Development

Vengreso Aug 2024 - Dec 2024
  • Took leadership of the department in a challenging environment and delivered the company's first enterprise-grade solution in over two years within just five months.
  • Led a team revitalization effort and optimized hundreds of thousands of lines of legacy code to enhance system performance.

Senior Software Development Engineer

Vengreso Apr 2024 - Aug 2024
  • Managed the end-to-end migration of the FlyMSG Chrome extension from Manifest V2 to V3, rewriting thousands of lines of code to meet new security and performance standards.
  • Led the development and optimization of high-performance web applications using Angular and React.

Senior Software Engineer

askblue Jul 2021 - Apr 2023
  • Served as the front-end team leader, developing with ReactJS and TypeScript.
  • Responsible for training junior developers, ensuring technical growth and high-quality code practices.

Freelance Developer

Self-Employed Sep 2019 - Mar 2023
  • Developed mobile applications using React Native, Expo, and TypeScript.
  • Created REST APIs with Node.js and .NET, and websites with ReactJS and Next.js.

Full-Stack Developer

Inside Sistemas Oct 2019 - Oct 2020
  • Performed system integrations with Node.js and developed web pages with ReactJS and Angular.

Fullstack developer

Easy Communication Technology April 2018 - August 2019
  • .net + angular developer on multiple projects, including EasyBuilder tools.

Fullstack Developer

Datacoper Software Ltda June 2016 - November 2018
  • Automated tests with Selenium.
  • .net framework developer.
  • Xamarin developer.
  • Publishing and maintaining Apps on GooglePlay and AppleStore.

C# Junior Developer

Wsys December 2015 - June 2016
  • Fullstack developer asp.net MVC, SQL Server, Jquery and bootstrap css.

Education

Postgraduate Specialization, Software Engineering

Metropolitan College of the State of São Paulo (FAMEESP)

May 2023 - Dec 2023

Specialization in ReactJS, React Native, and Node.js

RocketSeat

Sep 2019 - Dec 2019

Technologist in Information Technology

UNIPAR - Universidade Paranaense

Jan 2013 - Dec 2015