▸ hello, world

Mateus Martins

software / developer

Full Stack Developer passionate about building innovative solutions. Experienced in developing IoT management and automation systems with a focus on usability and performance. Currently working as Systems Development Analyst across various sectors.

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about

Building systems
that matter.

Full Stack Developer passionate about building innovative solutions. Experienced in developing IoT management and automation systems with a focus on usability and performance. Currently working as Systems Development Analyst across various sectors.

I thrive at the intersection of embedded systems, cloud infrastructure, and modern web interfaces — turning complex requirements into clean, maintainable solutions.

location
Ceará, Brazil
email
contact@mateusam.dev
availability
open to opportunities
01
Systems Thinker Designs for decoupling, scalability, and long-term maintainability.
02
Impact-Driven Ships solutions that move the needle — not just code that runs, but systems that last.
03
Full-Stack Comfortable across backend, frontend and mobile — end to end.
04
Team-Oriented Removes blockers, supports peers, and guides technical solutions.

skills

Tech stack.

A snapshot of what I use day to day — organized like a tools directory.

~/skills/languages
01
// languages

Languages

00
TypeScript JavaScript Java C# Python Swift Rust C C++ Dart PHP SQL
~/skills/frontend
02
// frontend

Frontend

00
React Angular Next.js Vue Tailwind Vite HTML CSS Material UI Bootstrap
~/skills/backend
03
// backend

Backend

00
Node.js NestJS Express Spring Boot ASP.NET Core REST GraphQL WebSockets
~/skills/mobile
04
// mobile

Mobile

00
Flutter React Native SwiftUI
~/skills/iot-&-messaging
05
// iot & messaging

IoT & Messaging

00
MQTT RabbitMQ ActiveMQ LoRaWAN
~/skills/databases
06
// databases

Databases

00
PostgreSQL MongoDB Redis MySQL TimescaleDB Firebase Oracle Database
~/skills/devops-&-tools
07
// devops & tools

DevOps & Tools

00
Docker Git GitHub GitHub Actions Linux GitLab

experience

Where I've worked.

A timeline of roles, companies, and key contributions along the way.

Jun 2024 — Present (1y 9m) Remote
current

Mid-Level Systems Development Analyst

NEPEN — Fortaleza, Ceará, Brazil

Leading technical initiatives and end-to-end project execution, transforming requirements into solid architectures and supporting teams in defining and implementing solutions. Focus on IoT systems, protocol abstraction, and system decoupling.

  • ▸ Technical leadership and end-to-end project management
  • ▸ Developed NB-IoT to LoRaWAN converter, unifying telemetry and abstracting protocols
  • ▸ Significantly reduced coupling between devices and systems
ASP.NET CoreSpring BootMQTTRedisReactAngularRustPostgreSQLMongoDBDocker
May 2023 — Jun 2024 (1y 1m) Remote

Junior Systems Development Analyst

NEPEN — Fortaleza, Ceará, Brazil

Complete refactoring of IoT device management system, introducing queues, separation of concerns, and incremental processing. Improved connectivity and monitoring for LoRaWAN and NB-IoT devices.

  • ▸ Reduced processing peaks from hours to seconds via queues and incremental processing
  • ▸ Increased data flow stability and observability for IoT devices
  • ▸ Active technical support and coordination across multiple projects
ASP.NET CoreSpring BootJMSMQTTRedisReactAngularRustPostgreSQLMongoDBDocker
Jan 2022 — May 2023 (1y 4m) Remote

Junior Full-Stack Developer

NEPEN — Fortaleza, Ceará, Brazil

Development of solutions for the energy and IoT sectors (LoRaWAN), working on backend, frontend, and mobile applications. Database modeling and operations for both relational and non-relational databases.

  • ▸ Built full-stack solutions for energy sector and IoT systems
  • ▸ Worked with LoRaWAN devices and protocols
  • ▸ Database modeling for SQL and NoSQL databases
ASP.NET CoreSpring BootMQTTReactAngularPostgreSQLFlutter
Aug 2021 — Dec 2021 (4m) On-site

Intern

E.E.E.P. Clemente Olintho Távora Arruda — Baturité, Ceará, Brazil

Development of a management system for beauty salons, including payment module and administrative area optimized for daily use.

  • ▸ Built complete management system for beauty salons
  • ▸ Payment integration module
  • ▸ Administrative interface optimized for daily operations
MongoDBNext.jsReact

projects

Things I've built.

Side projects, experiments, and tools I built to solve real problems.

01

Lunara Engine

A fantasy console for making retro-style games with Lua — built entirely in the browser. Inspired by PICO-8, it offers a constrained creative environment with a 128×128 canvas, 16-color palette, sprite editor, tilemap builder, step sequencer, and a custom simulated hardware layer — all in one place.

  • Lua-scripted game logic
  • Retro pixel-art rendering
  • Lightweight and easy to embed
ReactTypeScriptLuaTailwind CSSWebAssembly
02

PraxisJS

A TypeScript-first, signal-driven frontend framework with fine-grained reactivity. No virtual DOM. No magic. Just reactive TypeScript done right.

  • Fine-grained reactivity with signals
  • Class components with decorators (@State, @Prop, @Watch)
  • Built-in router, reactive store, and motion system
TypeScript
03

3D Book Helpers

A real-time 3D model generator designed to help organize and protect books through custom 3D printing solutions.

  • Real-time 3D model generation
  • Custom 3D printing solutions
  • Interactive web-based tool
Three.jsReact
04

Cinemate

Manage favorites, rate films, and create personalized watchlists to keep your movie collection organized.

  • Movie management and ratings
  • Favorites and watchlists
  • Published on the Google Play Store
React Native
05

We Transcriber

Transcribe your audio in real time using speech recognition technology.

  • Real-time audio transcription
  • Web-based application
  • Fast and accurate
React
06

When to Die

A casual mobile game built with Unity and published on the Google Play Store.

  • Mobile gaming experience
  • Google Play Services integration
  • Published on the Play Store
C#Unity
07

Holo

A lightweight framework for the M5StickC Plus 2, enabling rapid prototyping for embedded systems.

  • Embedded systems framework
  • M5Stack platform support
  • Rapid prototyping tool
C++
08

BBB Crack the Code

A simple game written in C for the BeagleBone Black bare-metal, showcasing low-level programming skills.

  • Baremetal programming
  • Low-level C and Assembly
  • Embedded systems game
CAssembly
09

Uno React

A simple Uno game made in React, featuring classic card game mechanics and multiplayer functionality.

  • Classic Uno gameplay
  • React implementation
  • Card game mechanics
JavaScriptTypeScriptReact

education

Academic background.

Degrees and credentials that shaped how I think and approach problems.

2024 — Present
Technologist Degree (CST) — Distance Learning
PUCRS
Analysis and Systems Development (Full-Stack and Mobile)
2022 — 2023
Bachelor's Degree
Universidade Federal do Ceará
Computer Engineering
2019 — 2021
High School with Technical Certificate
E.E.E.P. Clemente Olintho Távora Arruda
Computer Science

▸ languages

Portuguese Native speaker
English Intermediate — Technical

▸ interests

IoT Systems Embedded Dev System Design Open Source Mobile Apps Game Dev