Mateus Quintino
fullstack developer

Full stack, fully connected: interfaces, APIs, and data working together.

Full Stack Developer with experience in React, TypeScript, Angular, and .NET, working across startups and large logistics companies — always focused on robust, high-performance, high-quality solutions.

About

I'm a Full Stack developer with experience building software for large logistics companies, and I currently work at Leapfone, a smartphone rental startup, focused on building scalable applications.

I have experience developing frontend and backend applications using React, TypeScript, Angular, Node.js, Express, NestJS, GraphQL, .NET, and PostgreSQL, as well as libraries like MUI Joy UI and monitoring/observability tools like Sentry.

I hold a degree in Systems Analysis and Development, and I aim to apply solid architecture practices, clean code, and software engineering fundamentals to deliver robust, efficient, high-quality solutions.

Experience

frontend jr.
Guep Technology

Guep Technology S/A

Feb 2022 – Oct 2023
Frontend Developer Jr.

Built interfaces with Angular and TypeScript, focused on reusable components, API integration, and usability for large-scale systems.

AngularTypeScriptAngular Material
backend jr.
Guep Technology

Guep Technology S/A

Oct 2023 – Oct 2024
Backend Developer Jr.

Developed and maintained systems such as Score (driver registration), Kavuka (driver history), Backoffice, and Processo Limpo, using Node, Express, Sequelize, and Redis.

NodeExpressSequelizeRedis
fullstack pleno
Leapfone

Leapfone

Apr 2025 – Present
Fullstack Developer Mid-Level

Frontend with React, TypeScript, and MUI Joy UI integrated via GraphQL; backend in .NET and PostgreSQL with REST and gRPC APIs, applying DDD and Clean Code. Containerization with Docker and observability with Sentry.

React.NETGraphQLPostgreSQLDocker

Education

FIAP

Pós Tech – AI Scientist

FIAP + Alura · Mar 2026 – Dec 2026

Intensive data science and AI program covering machine learning, deep learning, generative AI, NLP, MLOps, and model deployment/monitoring practices.

International House Dublin

International House Dublin

Exchange program · Sep 2025 – Oct 2025

English studies, B2.2 module, in Dublin.

Fecap

Fecap – Systems Analysis and Development

Fecap · Jan 2022 – Dec 2023

Developed back-end, web, and mobile applications with C#, JavaScript, and Python, plus IoT, data analysis, and machine learning fundamentals.

ITB

ITB – IT Technician

ITB · Jan 2019 – Dec 2021

Programming logic, programming languages, operating systems, and databases.

Skills

Frontend
ReactAngularTypeScriptMUI Joy UIMaterial UI
Backend & infra
.NETNode / ExpressNestJSGraphQLPostgreSQLMySQLDockerSentry
Languages
Portuguese – nativeEnglish – advanced B2.2

Contact

Open to new opportunities and conversations.