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I’m a back-end developer focused on building reliable, scalable server-side systems, with hands-on experience using Python (FastAPI, Flask) and relational databases like MySQL. I enjoy designing clean RESTful APIs, implementing secure authentication/authorization, and making sure the backend performs well under real usage. I’ve worked on freelance projects ranging from an access control platform to an IDE-inspired interactive web application. I’m comfortable working remotely, debugging deployment issues, and applying strong data-structure and software-engineering fundamentals to deliver stable, maintainable architectures.…I’m a back-end developer focused on building reliable, scalable server-side systems, with hands-on experience using Python (FastAPI, Flask) and relational databases like MySQL. I enjoy designing clean RESTful APIs, implementing secure authentication/authorization, and making sure the backend performs well under real usage. I’ve worked on freelance projects ranging from an access control platform to an IDE-inspired interactive web application. I’m comfortable working remotely, debugging deployment issues, and applying strong data-structure and software-engineering fundamentals to deliver stable, maintainable architectures.

João Barros

Back-End Developer, Web Developer, Programmer

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I’m a back-end developer focused on building reliable, scalable server-side systems, with hands-on experience using Python (FastAPI, Flask) and relational databases like MySQL. I enjoy designing clean RESTful APIs, implementing secure authentication/authorization, and making sure the backend performs well under real usage. I’ve worked on freelance projects ranging from an access control platform to an IDE-inspired interactive web application. I’m comfortable working remotely, debugging deployment issues, and applying strong data-structure and software-engineering fundamentals to deliver stable, maintainable architectures.…I’m a back-end developer focused on building reliable, scalable server-side systems, with hands-on experience using Python (FastAPI, Flask) and relational databases like MySQL. I enjoy designing clean RESTful APIs, implementing secure authentication/authorization, and making sure the backend performs well under real usage. I’ve worked on freelance projects ranging from an access control platform to an IDE-inspired interactive web application. I’m comfortable working remotely, debugging deployment issues, and applying strong data-structure and software-engineering fundamentals to deliver stable, maintainable architectures.

Available to hire

I’m a back-end developer focused on building reliable, scalable server-side systems, with hands-on experience using Python (FastAPI, Flask) and relational databases like MySQL. I enjoy designing clean RESTful APIs, implementing secure authentication/authorization, and making sure the backend performs well under real usage.

I’ve worked on freelance projects ranging from an access control platform to an IDE-inspired interactive web application. I’m comfortable working remotely, debugging deployment issues, and applying strong data-structure and software-engineering fundamentals to deliver stable, maintainable architectures.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Beginner

Language

Portuguese

Fluent

English

Advanced

Work Experience

Software Developer (Freelance) at Portfolio IDE-Inspired Experience

November 1, 2025 - Present

Engineered server-side logic and overall architecture for an interactive web application simulating an IDE environment. Applied knowledge of data structures and algorithms to optimize performance and maintain stable persistent states. Managed source code and version control using Git and GitHub to support structured and scalable deployment workflows. Troubleshot and resolved technical backend issues during the deployment pipeline to maintain high system availability.

Back-End Developer (Freelance) at Wayne Industries (Access Control Project)

November 1, 2025 - December 31, 2025

Designed and developed a high-performance backend for an access control web application using Python and Flask. Built and integrated a scalable RESTful API to support server-side logic and frontend functionality. Modeled and deployed a MySQL database to securely and efficiently handle organizational data. Implemented authentication and role-based authorization (RBAC) for distinct user profiles such as employee, manager, and admin, emphasizing robust security practices.