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

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

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

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

AI SYSTEMSHermes Agent · Hermes Remote · 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 12 live sources, background download queues, WebSocket progress, source health monitoring, and containerized TypeScript/Python services.

Open product ↗

Hermes Agent

✓ UPSTREAM CONTRIBUTOR

Upstream contributor across gateway reliability, Telegram streaming, browser recovery, delegation boundaries, CLI diagnostics, and update safety — with regression tests and full CI validation.

View upstream contributions ↗

Hermes Mobile

● RELEASED · APK · 828 TESTS

Community Android port of Hermes Agent built with Python and Flet, with Local and Remote modes, streaming tools, session resume, durable drafts and queued follow-ups, encrypted provider storage, EN/PT-BR UI, and audited APK releases.

Download APK ↗Read docs ↗View repository ↗

PooL AI Platform

● ACTIVE · SELF-HOSTED

Personal AI platform on Hermes Agent integrating persistent memory, reusable skills, scheduled automation, subagents, webhooks, health checks, recovery workflows, and isolated Forge workers for durable code and build jobs.

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 · Flet · Android · responsive interfaces · offline-first workflows

AI Agents & Automation

Hermes Agent · Hermes Remote · 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 · dual-runtime CI · regression testing · APK payload audits · mobile-first QA

⬥ SAVE DATA ⬥

Contact, source, and résumé

PLAYER CONTACT

GitHubgithub.com/plcunha ↗

LinkedInJoão Vitor Cunha ↗

Emailplcunha@pls.software

Resume ENDownload PDF ↗

Currículo PT-BRBaixar PDF ↗

Status● OPEN TO WORK

FocusFull-Stack · Backend · AI Systems

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