Jero Sanchez
Backend engineer. Building things that last.
Welcome back!Here you have the latest
chapter of my story, ready for the curious mind. Grab a seat, get comfortable, and let’s see
what new twists are on the table today:
The Bug AI Cannot See: How Keeping Humans In The Loop Saves Real Money
What happens when a senior engineer spots what 500+ tests and a green pipeline completely missed—not a missing line, but a missing abstraction? Here's why that judgment cannot be delegated to an AI, and why patching your prompts won't save you.
Read more ⟶The Rest Of The Story:
Catch up on the chapters that brought me here.
ClickNBack: Building a Cashback System That Earns Its Complexity
What happens when you pick a domain where sloppy thinking has real consequences? A production-grade cashback platform backend—live, continuously deployed, and engineered around the constraints that make financial systems genuinely interesting.
Read more ⟶Before You Ask: What You'll Find If You Read ClickNBack
What happens when a senior engineer opens your GitHub repo instead of just reading the README? A tour of the decisions, constraints, and practices worth examining in the ClickNBack codebase—including how AI fits into a disciplined engineering workflow.
Read more ⟶The Pivot: Why I Dropped a Marketplace for a Cashback System
What happens when the project you've been building turns out to be the wrong proving ground? After two months away, here's the honest story of why everything changed—and why that clarity was worth waiting for.
Read more ⟶CI/CD in the Home Lab: Docker Gotchas, Resource Limits, and Real Engineering Lessons
What happens when your runner needs to build Docker images and you hit resource ceilings? This post covers the Docker socket challenge, practical resource management, and the deeper engineering lessons learned from running CI/CD in your own lab.
Read more ⟶