From landing pages to full SaaS products - here are the highlights
Route optimization (TSP) · 70+ daily stops · real driving distances
Logistics tool that geocodes raw addresses and solves the TSP to turn 70+ daily delivery stops into the shortest real-world driving route. Next.js 15 PWA with an interactive map, plus a Python geocoding/optimization engine. Private, login-gated internal app used in daily operations.
Human-reviewed AI pipeline · Next.js + Python worker
Political transparency platform that turns long interviews and debates into searchable statements with precise timestamps, topics, and full trace back to the original video.
Multi-agent LLM orchestration (LangGraph) · Markdown-configured
CLI that orchestrates multiple specialized LLM agents to generate platform-specific marketing content from Markdown configs, with unified providers and graph-based execution via LangGraph.
Custom RAG (LangGraph + pgvector) · live SaaS with subscription tiers
AI sermon-prep assistant for pastors and ministry leaders (formerly KeryxAI). Turns sermon audio into study guides, weekly WhatsApp reflections and a source-citing church chatbot; custom RAG (LangGraph + pgvector) with credit-based billing. Live at arautoai.com.br.
Python CLI · automates installments via the YNAB API
Interactive Python CLI to automatically create past and future installments in YNAB, with safe deduplication and optional AI-powered category suggestions.
Multi-org finance SaaS · Clean Architecture · per-org isolation
Multi-organization financial management platform that treats each project as an independent organization with its own accounts, people and reports. Combines a Node/Fastify backend and a React SPA to provide per-project cash-flow traceability and a consolidated portfolio view.
Tree-shakable TypeScript utility library · modular, npm-published
Tree‑shakable TypeScript utility library that centralizes helpers for dates, strings, arrays, API calls, YouTube and file handling to avoid duplication across projects, working in both Node.js and browsers via conditional exports.
Production SaaS · digital memorials with timelines & galleries
SaaS platform to create collaborative digital memorials and celebration events, centralizing photos, stories, and tributes to loved ones in a single place.
Multi-service architecture (Next.js + Fastify + Python bot)
Personal platform to discover movies, vote on recommendations, and manage a watchlist, with an auto-synced catalog via TMDB and a custom image optimization pipeline.
Real-time check-in PWA · QR scanning · live capacity control
Production-grade system for real-time check-in/check-out control at Igreja Cristã Maranata - Maanaim de Uberlândia events, replacing manual spreadsheets with QR badge scanning and a live status dashboard.
Game-server ranking · anti-fraud voting · Stripe + async queues
Full-stack ranking platform for game servers with anti-fraud voting, Stripe-powered premium plans, and asynchronous metrics processing.
Offline-first PWA · semantic search · in production since 2019
Worship resources platform built to serve church communities. Provides a comprehensive song database with search by title, number, or lyrics, chord sheets with real-time transposition, display modes, and a projection module for live services. Evolved from a simple React app in 2019 to a full ecosystem.
Custom domain CRM · ~100 clients in production
Niche CRM for Brazilian payroll loans, centralizing clients, benefits, partner banks and entities with a trackable interaction history.
