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kingdevil731 (Ruben Folhento) · GitHub

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kingdevil731/README.md

Ruben Folhento

Senior Product Engineer
Building scalable SaaS, backend and product systems.

What I Build

I design and ship software across:

  • Realtime multiplayer products
  • Offline-first platforms
  • Multi-tenant business software
  • Backend services and operational tooling
  • Product-focused engineering systems

Current focus:

TypeScript • React • Node.js • Systems Design

Featured Architecture Showcases

Public architecture-focused repositories documenting engineering decisions, distributed workflows and product system design.

🎮 Nome Terra Architecture

Realtime multiplayer architecture using Socket.IO and event-driven state synchronization.

Repository: https://github.com/kingdevil731/nome-terra-architecture

🎟 Events Platform Architecture

Offline-first ticketing, replay queues and reconciliation workflows.

Repository: https://github.com/kingdevil731/events-platform-architecture

📦 Inventory ERP Architecture

Multi-tenant ERP architecture, operational workflows and domain modeling.

Repository: https://github.com/kingdevil731/inventory-erp-architecture

Selected Professional Experience

🧾 Quipu

Full-stack product engineering across:

  • SaaS frontend development
  • React Native mobile applications
  • Node.js microservices
  • Compliance-oriented backend workflows
  • Production reliability and systems ownership

Engineering Interests

Particularly interested in:

  • Product engineering
  • Distributed workflows
  • Event-driven architecture
  • Realtime interaction systems
  • Operational software design

What I Focus On

  • Building production-grade software
  • Designing maintainable architectures
  • Full-stack ownership from implementation to production support
  • Improving reliability and operational workflows
  • Shipping practical software with product impact

Core Stack

Frontend

  • React
  • Next.js
  • TypeScript

Mobile

  • React Native

Backend

  • Node.js
  • Prisma
  • PostgreSQL
  • REST APIs
  • Microservices

Systems

  • Docker
  • Redis
  • BullMQ
  • Socket.IO

Current Themes I Enjoy Exploring

  • Multiplayer synchronization
  • Offline-first reconciliation patterns
  • Domain modeling
  • Product infrastructure
  • Distributed coordination workflows

Links

Portfolio
https://kingdevil731.dev

LinkedIn
https://www.linkedin.com/in/ruben-folhento

GitHub
https://github.com/kingdevil731

Production SaaS • Product Engineering • Distributed Workflows • Full-Stack Ownership

Pinned Loading

  1. nome-terra-architecture nome-terra-architecture Public

    Realtime multiplayer word game architecture showcase built with Socket.IO, TypeScript and event-driven systems.

  2. events-platform-architecture events-platform-architecture Public

    Architecture showcase for an event commerce platform with offline-first check-in, sync replay and reconciliation systems.

  3. inventory-erp-architecture inventory-erp-architecture Public

    Architecture showcase for a multi-tenant inventory ERP focused on domain modeling, operational workflows and scalable business systems.

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