Software Engineer

I craft clean, high-performance software and lead small engineering projects, combining strong technical roots with hands-on delivery.

📧 joao.coutinho08@gmail.com · 🐙 GitHub · 🌐 Portfolio Website

I am a software engineer focused on building clear, reliable software. I enjoy architecting backend systems and writing responsive, fast applications.

Across my projects, I've built everything from full-stack web apps to desktop tools and a lot of game mechanics. I place high value on technical clean code and direct, honest communication.

Whether writing C++ for low-level systems or building a full-stack web application, my approach is straightforward: solve real problems with practical, maintainable code.

Building fast, intuitive web applications with modern frameworks. I focus on clean interfaces, responsive UX, and eliminating unnecessary frontend bloat.

Architecting backends, desktop tools, and custom business software. I care about solid data structures, reliable APIs, and systems that just are simple and work.

Developing gameplay systems, mechanics, and interactive prototypes. I focus on real-time logic, performance tuning, and clean modular code.

C, C#, C++, Java, JavaScript, Lua, PHP, Python, Rust, Svelte, Swift, TypeScript, Bash Script, Batch Script

.NET, Angular, AnimeJS, Capacitor, Django, Electron, Expo, Express, Framer Motion, GSAP, NestJS, Next.js, Nuxt.js, React, Tauri, Vue.js

Appwrite, DBeaver, Firebase, MongoDB, MySQL, PostgreSQL, Prisma, Redis, SQLite, Supabase

Docker, Node.js, Git, GitHub, GitLab, Vite, Vitest, Webpack, Turbo Repo, CMake, Gradle

Godot, Unity, Unreal Engine, Roblox Studio

JetBrains, VS Code, Visual Studio, Cursor, Linux, macOS, Windows

Status: Confidential · Category: Systems & Engines
Stack: Next.js · Electron · Tailwind CSS · Prisma · NestJS · PostgreSQL · Docker · TypeScript · Turborepo

A project management desktop application with local-first design, built using Electron, Next.js, NestJS, PostgreSQL, and TypeScript in a Turborepo monorepo.

Status: Confidential · Category: Fullstack & Backend
Stack: Angular · Rust · TypeScript · HTML · CSS · Tauri · Docker

A custom web application designed for Antonio Costa Company to streamline workshop operations, client interactions, and internal management. Features AI capabilities to assist with daily workflows.

Status: Open Source · Category: Fullstack & Backend
Stack: Python · LiteLLM

A systemic prompt engineering and evaluation framework. Features advanced meta-cognitive agent personas, few-shot dynamic context injection, schema-validated test assertions, and an interactive CLI playground powered by LiteLLM.

🔗 Source Code

Status: Open Source · Category: Fullstack & Backend
Stack: TypeScript · VSCode

Code Pulse is an extension to keep track of your productivity and coding patterns to help you out. It provides smart insights, trends, complexity, and more to improve your coding standards and quality.

🔗 Source Code

Status: Open Source · Category: Frontend & Web
Stack: Nuxt · Vue 3 · Tailwind CSS · TypeScript · Vercel · CSS3

A modern, fully server-side rendered portfolio built with Nuxt 4 and Vue 3. Features scroll-based animations, i18n (EN/PT), WCAG 2.1 AA compliance, Nuxt UI, Tailwind CSS v4, and a fully data-driven content architecture.

🔗 Live Demo · Source Code

Status: Open Source · Category: Systems & Engines
Stack: JavaFX · Java · Gradle · Maven

DailyDash is a JavaFX desktop app that makes task management faster, safer, and easier. It is designed for a smooth cross-platform experience on Linux, macOS, and Windows.

🔗 Source Code

Status: Open Source · Category: Frontend & Web
Stack: TypeScript · React · Next.js · Puter.js · OpenRouter API · Vercel · Tailwind CSS · assistant-ui · shadcn/ui

FreeChatium is a serverless edge AI workspace powered by Puter.js and OpenRouter, with support for 100+ models, multimodal vision, sandboxed code execution, cloud storage, and PWA delivery.

🔗 Source Code

Status: Open Source · Category: Frontend & Web
Stack: TypeScript · pnpm · Turborepo

Evara-UI is an open-source, highly scalable UI library and design system with modular, consistent, and testable components, plus built-in support for performance, SEO, analytics, and backend-driven workflows.

🔗 Source Code

Status: Open Source · Category: Systems & Engines
Stack: Rust · CLI · REPL · Shell · Terminal UI

BeaudyShell is a modern, extensible, and highly accessible Rust-based shell with a polished REPL experience, real-time syntax highlighting, inline autocompletion, tab-cycled suggestions, and command history restoration.

🔗 Source Code

Status: Open Source · Category: Frontend & Web
Stack: Next.js · React · Tailwind CSS · TypeScript · Math.js · Vercel

The Great Calculator is a high-precision calculator with scientific mode, graphing mode, functions, and probability tools, designed to feel fast, clear, and accurate.

🔗 Live Demo · Source Code

📅 23/08/2023 – 01/01/2026

Founded and led systems development for indie game projects, managing core technical architecture and team workflows. Designed gameplay mechanics and state management using C++ and modern tooling. Established Git version control standards, CI workflows, and technical documentation to keep multi-member development organized.

📅 10/05/2023 – 29/07/2023

Developed custom web software for a workshop client, streamlining daily operations and client tracking. Conducted discovery sessions to map business requirements into clear technical specs, optimized performance bottlenecks for fast loading, and delivered a responsive, easy-to-maintain application on time.

🎮 Gaming - Exploring virtual worlds and analyzing game mechanics, which fuels my passion for game development.

🏍️ Moto Riding - Seeking adrenaline on the open road and exploring new places on two wheels.

💻 Coding - Writing code as a hobby and constantly learning new technologies.

My inbox is always open. Whether you have a question, a project proposal, or just want to say hi, I'll try my best to get back to you!

📧 joao.coutinho08@gmail.com
🐙 github.com/BleckWolf25