João Vitor Cunha — Full-Stack Software Engineer & AI Systems

⬥ PLAYER PROFILE ⬥

Production systems, open source, and AI agents

João Vitor Cunha

Full-Stack Software Engineer · AI Agents & Production Systems

📍 Maringá, Paraná, Brazil

Open-source contributor to Hermes Agent by Nous Research. I build and operate production products end to end — from TypeScript/Python APIs and responsive interfaces to PostgreSQL, Docker, Linux, observability, automated testing, and AI-agent infrastructure.

BACKEND & REAL-TIMETypeScript · Python · REST APIs · WebSockets

PRODUCT FRONTENDPreact · React · Next.js · Offline-first UX

AI SYSTEMSHermes Agent · MCP · Tool orchestration · Memory

DATA & INFRAPostgreSQL · Prisma · Redis · Docker · Linux

⬥ QUEST LOG ⬥

Selected production, open-source, and R&D work

PLFY

● LIVE · PRODUCTION

Offline-first professional journal with authenticated sync, media uploads, Stripe subscriptions, responsive UX, and automated Vitest/Playwright QA.

Open product ↗

MangaMazing

● LIVE · PRODUCTION

EN/PT-BR manga platform with 10 live sources, background download queues, WebSocket progress, source health monitoring, and containerized TypeScript/Python services.

Open product ↗

Hermes Agent

✓ UPSTREAM CONTRIBUTOR

Gateway reliability fix accepted into Nous Research's main branch, preserving peer routing across context-compression recovery with regression coverage.

View upstream commit ↗

hermes-free-ride

✓ OPEN SOURCE · 20 TESTS

Tested Python CLI for task-aware model routing across OpenRouter and NVIDIA NIM, with live probes, caching, cooldowns, and health-based fallback rotation.

View repository ↗

PooL AI Platform

● ACTIVE · SELF-HOSTED

Personal AI platform on Hermes Agent integrating Telegram, persistent memory, reusable skills, scheduled automation, subagents, webhooks, health checks, and recovery workflows.

PLCODE

● ACTIVE · R&D

OpenCode-based personal coding-agent R&D with multi-agent orchestration, provider routing, MCP/LSP integration, project memory, and verification-focused workflows.

⬥ EQUIPMENT & ABILITIES ⬥

Stack used in shipped systems

Backend & APIs

TypeScript · Python · Node.js · Express · NestJS · FastAPI · REST · WebSockets

Frontend & Product UX

Preact · React · Next.js · responsive interfaces · offline-first workflows

AI Agents & Automation

Hermes Agent · LLM orchestration · MCP · tools · persistent memory · subagents

Data & Storage

PostgreSQL · Prisma · Redis · SQLite · Supabase · schema and API design

Infrastructure & Operations

Docker · Linux · Nginx · GitHub Actions · webhooks · health checks · recovery

Quality & Delivery

Pytest · Vitest · Playwright · typecheck · regression testing · mobile-first QA

⬥ SAVE DATA ⬥

Contact, source, and résumé

PLAYER CONTACT

GitHubgithub.com/plcunha ↗

LinkedInJoão Vitor Cunha ↗

Emailjoao@pls.software

RésuméDownload PDF ↗

Status● OPEN TO WORK

FocusFull-Stack · Backend · AI Systems

⬥ SPACE DEFENDER ⬥

Shoot the invaders — keyboard or touch

SCORE: 0 HI: 0 LIVES: ❤❤❤

ARROWS / WASD MOVE · SPACE FIRE · P PAUSE · ESC QUIT