Jhonatan Ferreira | Full-Stack Developer

My Work

Jan 2022 – Mar 2026 • 4 yrs 2 mos

Ambra | São Paulo, SP, Brazil | RemoteLanguage: Portuguese

Developed and maintained features in a microservices architecture using Laravel, Angular, and Python.
Integrated microservices (payments, notifications, communication) using RabbitMQ.
Designed and implemented data structures with MySQL and MongoDB, including migrations and queryoptimization.
Participated in architecture decisions, contributing to scalability and service organization.
Performed code reviews and refactoring of legacy code, improving performance and maintainability.
Identified and fixed complex bugs in distributed systems, ensuring application stability.
Collaborated in an agile team using Scrum methodology.
Worked with cloud services using Azure, supporting application deployment and maintenance.

May 2019 – Nov 2021 • 2 yrs 6 mos

Guardião Digital | São José do Rio Preto, SP, Brazil | On-siteLanguage: Portuguese

Developed and maintained monolithic applications using Laravel and Angular.
Participated in rewriting a legacy Flash application into a modern architecture using Angular and Laravel.
Worked extensively with SQL, analyzing and optimizing complex queries and database functions.
Debugged legacy systems, identifying and fixing issues in critical functionalities.
Developed solutions using plain PHP as well as frameworks, adapting to different system contexts.
Worked on multiple projects simultaneously, implementing new features and fixing bugs.
Built image processing solutions for data analysis automation using specialized libraries.
Developed image processing pipelines using OpenCV for automated data analysis.

May 2025 – Jul 2025 • 2 mos

Act Like You Matter | San Diego, CA, United States | RemoteLanguage: English

Collaborated with an international team in English-speaking meetings and asynchronous communicationvia Slack, contributing to technical and strategic decisions.
Developed web interfaces using React and Next.js for an interactive application.
Implemented features and improvements focused on user experience.