Jero Sanchez

Software Engineer. Building things that matter.

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:
What happens when a recruiter suggests you add an AGENTS.md to show you're using AI—and the AI infrastructure was already there, just not in the shape the industry learned to look for?
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The Rest Of The Story:

Catch up on the chapters that brought me here.

Ownership Changes What Counts as a Skill: The Complete Loop

What happens when you realize that knowing a system is different from owning it—and that owning it completely changes your credibility?
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Structured to Scale: The Architecture Call Most Teams Get Wrong

What happens when you build a financially complex backend from scratch and face the monolith-versus-microservices question before you've written a single domain model? The reasoning behind that choice is where senior judgment shows up.
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The T-Shaped Fallacy: It's Not About Coverage

What happens when you realize that being T-shaped isn't about touching everything—it's about knowing where to go deep?
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Fluent in Two Weeks: The Stack Is No Longer the Moat

What happens when you ship production-grade Python after years in Swift, Java and Elixir? The question isn't how fast you can learn a new language anymore—it's whether you have the judgment to know what to build with it.
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