👨💻 Software Engineer | Fullstack Developer | Researcher
🚀 Main stack: TypeScript, React, Node.js, PostgreSQL, Expo, Supabase
🔬 MSc in progress – interdisciplinary project in mechatronics and physiotherapy
⚙️ Exploring real-time systems, IoT, cloud infrastructure, and interactive dashboards
Driven by projects that connect technology to real-world impact. On this GitHub profile, you’ll find everything from real-time vehicle tracking systems and MQTT automations to custom management tools for health, mobility, and event industries.
Always learning, sharing, and building solutions that are clean, performant, and well-documented.
I'm always open to discussing new opportunities, collaborations, or sharing knowledge! Feel free to reach out:
- Email: jefersoneduardoguido@gmail.com
- LinkedIn: LinkedIn Profile
- Languages: TypeScript, Python, JavaScript, Java, C#
- Frameworks: ReactJS, Expo/React Native, Angular, NestJS
- Databases: PostgreSQL, SQLite, MongoDB
- DevOps & Tools: Docker, Git, Firebase, Supabase
- Cloud Architecture: AWS, Docker, Google Cloud, Railway, PrismaORM
Developed a neural network capable of identifying speakers in audio files, applying advanced NLP and forensic phonetics. Built using a Sequential Model with Categorical Crossentropy, this project explores the intersection of AI and legal tech, offering significant improvements in suspect identification from audio.
- Applied machine learning techniques to classify interlocutors.
- Potential use in forensic phonetics and legal investigations.
- Improved productivity in detecting multiple speakers from audio files.
2. LocknSafe
A password management app built with Expo, React Native, and Firebase. Focused on delivering a secure and intuitive user experience, LocknSafe provides strong encryption and customizable password generation.
- Technologies: Expo, Firebase, React Native Paper.
- Implemented user authentication and secure password storage.
Currently working on implementing and deploying a multiplatform system (Web, Android, iOS, Desktop) using Expo with TypeScript and Supabase. This system integrates real-time notifications through NTFY and supports cross-platform synchronization.
Developed a new integration method for GPS trackers using ReactJS, PostgreSQL, Prisma ORM, and NestJS. This project involved integrating new trackers from Queclink, Teltonika, Suntech, and Concox, and redesigning microservices to handle data normalization and tracker communication.
I teach about:
- Web Development: Led classes covering HTML, CSS, JavaScript, and ReactJS from basic to advanced levels.
- Software Design Project: Instructed students in software design principles and project architecture.
- Java: Taught foundational to advanced Java programming concepts.
- PostgreSQL: Provided guidance on PostgreSQL usage, from queries to advanced database management.
- Lead development of a cross-platform system (Web, Android, iOS) using Expo and Supabase.
- Integrated real-time notifications using NTFY for seamless user experience across platforms.
- Developed IoT monitoring and control app using ReactJS, NestJS, and PostgreSQL.
- Implemented GPS tracker integration using ReactJS, NestJS, and PostgreSQL.
- Rebuilt microservices architecture to improve data processing efficiency for trackers.
- Integrated new trackers from Queclink, Teltonika, Suntech, and Concox.
- Maintained ERP modules using C# and Delphi 6, and managed a large-scale procurement system.
- Developed BPMN diagrams for process automation using ReactJS.
- Built a platform for hackathon management using Angular and Firebase with responsive UI.
- Developed ERP modules and built a service desk extension integrated with Azure DevOps.
- MBA Financial Management (2024 - 2025)
- Bachelor's in Software Engineering, Assis Gurgacz University (2019 - 2022)
- Technical Degree in Technology of Information, Federal Institute of Paraná (2013 - 2017)