Hey, I'm Pedro 👋
Product engineer building payment and subscription systems
I build and fix the billing your SaaS runs on.
Stripe and Paddle, subscriptions, checkout, and the webhooks that keep revenue from leaking. 15 years of payments work, much of it in fintech, done hands on in your codebase. I also run my own products: modl, an open source LoRA toolkit, and Reframe, a live AI Shopify app.
Billing is what I lead with
I build and fix SaaS billing first, and I build across the rest of the stack once I'm in the codebase. Each tile links to the write-ups.
Reference Guides
Technical write-ups from real projects: Stripe, PostgreSQL, WebSockets, and AI tooling.
AI 19 min read
Building My AI Home Lab: From Laptop to Dedicated Server
How I built a dedicated RTX 4090 AI server running Pop!_OS, and how it has evolved since: Tailscale, Docker Compose profiles, local LLMs with Ollama and llama.cpp, image generation, self-hosted Immich, and driving coding agents from my phone over mosh and tmux.
AI 10 min read
My Remote AI Dev Workflow: Claude Code + tmux + 4090 Server From Anywhere
How I use Claude Code on a headless RTX 4090 server with tmux, git worktrees, and Tailscale to ship code from my laptop, iPad, or phone. Fire a prompt, close the lid, reconnect later. The actual workflow I use daily.
Next.js 14 min read
Stripe Subscriptions in a Next.js Application
Learn about Stripe Subscriptions in a Next.js Application
Next.js 9 min read
Real-Time Notifications with Server-Sent Events (SSE) in Next.js
Learn how to implement real-time server-to-client updates using Server-Sent Events in Next.js - a simpler alternative to WebSockets for one-way data streaming
Next.js 15 min read
Stripe Checkout and Webhook in a Next.js Application
Learn about Stripe Checkout and Webhook in a Next.js Application
Next.js 13 min read
Stripe + Next.js 15: The Complete 2025 Guide
Build production-ready payment systems with Stripe and Next.js 15 using Server Actions - from one-time payments to subscriptions and credit systems
What I'm Building
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