Maple
2026A mobile app for healthcare staff to manage their schedule, pick up open shifts, and track timecards and earnings across facilities.
Hi, I'm Matheus Pires 👋
I build ambitious products
from zero to scale.
Senior Full-Stack Product Engineer turning complex ideas into fast, reliable software — across web, mobile, backend and AI.
Case studies
Shift Chat
2026A Slack-style internal communication platform built for hospitals and multi-facility operations, where staff rotate across shifts, wings, and sites.
Lintsy
2025A privacy-first desktop AI companion for pull request review, built with Rust and TypeScript using Tauri, running 100% locally with your LLM of choice.
Racino
2024A blockchain-integrated Formula racing game played in the browser, with a 3D car customization system and a full NFT marketplace built on Ethers.js.
AI Tools
Open source AI skills, agents and tools — free to use and remix.
A research harness that fans out parallel web searches, fetches the sources, adversarially verifies every claim, and synthesizes a cited report.
An AI skill to develop modular backends with Elysia with ease
A full product starting point — Bun + Turborepo monorepo with backend, web, mobile, database, auth, queues and payments already decided, plus a rule system that keeps AI agents on those conventions.
Blog
Thoughts on software engineering and product building.
Building type-safe APIs with Zod and Next.js
How I use Zod schemas to create end-to-end type safety between frontend and backend in Next.js applications.
The real cost of AI agent errors
A look at how unrecoverable actions in AI agent workflows can cascade into expensive failures — and practical strategies to prevent them.
Why I stopped using Prisma for new projects
After building production apps with Prisma for two years, I switched to a different approach. Here's what I learned and what I use now.
Career
Where I've worked and what I shipped.
- Present1 yr 7 mos
Senior Fullstack Engineer
Leading development of a HealthTech communication product for one of the largest hospital networks in the US. Node.js + NestJS backend with WebSockets, Redis, and PostgreSQL. React/Next.js web and React Native/Expo mobile. Full AWS infrastructure with ECS + Fargate.
- 1 yr 1 mo
Lead Software Engineer
Spearheaded PartiuRolê from scratch — a digital ticket marketplace handling high-volume concurrent purchases. Set backend patterns with Fastify, frontend standards with Next.js, and CI/CD pipelines.
- 1 yr 3 mos
Senior Software Engineer
Built a blockchain-integrated F1 multiplayer game. Developed a 3D character customization system in the browser and the full NFT marketplace with MetaMask/crypto wallet integration using Ethers.js.
- 1 yr 3 mos
Senior Software Engineer
Frontend specialist processing 110M+ orders/month. Built the Logistics-as-a-Service UI with React + TypeScript, a BFF with NestJS, and the courier notification panel with automated testing.
- 11 mos
Software Engineer
Owned the chat and messaging system. Architected microfrontends with React, built a reusable design system with Storybook, and led the embeddable chat widget development.
- 6 mos
Software Engineer
Engineered real-time chat for an omnichannel support app centralizing WhatsApp, Telegram, and Instagram. React + TypeScript with Redux Saga and Azure SignalR serverless backend.
- 1 yr
Software Engineer
Built the control panel for a server management platform (Heroku alternative) managing Linux container deployments on GCP and AWS. React + TypeScript with Storybook design system.
- 1 yr
Software Engineer
Developed a document management platform for environmental compliance — a private repository with admin dashboard. React + TypeScript frontend, migrated backend to Strapi headless CMS.
Available for new projects
Have something you want built?
Tell me what you're working on and I'll tell you the fastest honest path to shipping it — no long discovery, no boilerplate pitch.