root / home / home.sys

SYSTEM_BROADCAST

LOAD: ALEX_CASTRO_BIO... [ OK ]

EXEC: cat alex_castro_bio.json

{

"headline": "The architect who still writes code",

"intro": "I'm Alex. I craft tailor-made internal platforms and developer tools that make software engineers more productive.",

"proof": "Senior Principal Software Engineer at a Chicago fintech. 15+ years shipping systems that handle real money.",

"topics": "Build logs. Patterns. Opinions. Artifacts included."

}

EXEC: LATEST_ARTICLES --limit 6

Stop Architecture Drift: Operationalizing ADRs with Automated Fitness Functions

How to operationalize ADRs into fitness functions that catch cross-language architecture drift in pull requests before it reaches production.

POST, 2026-04-06

Agentic AI Code Review: From Confidently Wrong to Evidence-Based

My AI code reviewer kept being confidently wrong. The fix wasn't a better prompt — it was giving the model tools to fetch its own evidence.

POST, 2026-03-09

Challenging Assumptions in Technology: From Being Right to Getting It Right

Why the best engineering decisions come from asking 'What if we're wrong?' and how to build a culture of getting it right instead of being right.

POST, 2026-02-11

You are a Senior Engineer, Mastering Communication & Influence (Part 3)

Great code doesn't matter if you can't sell it. Let's talk about the 'soft' skills that actually drive your career: influence, communication, and leading when you're not the boss.

POST, 2026-01-12

Building a Custom AI Code Reviewer for GitHub Enterprise with Bedrock and Go

How I built Archbot, a custom AI code reviewer for GitHub Enterprise using AWS Bedrock, Repomix, and Go. Includes the failed attempts, the two-phase architecture that solved context explosion, and production Go code samples.

POST, 2025-12-09

You are a Senior Engineer, Mastering Software Architecture and Design (Part 2)

Scared of the word 'Architecture'? Don't be. Here is a practical workout plan to help you master system design and start seeing trade-offs like a pro.

POST, 2024-05-14