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June 2025

RAG vs CAG vs Fine-Tuning
Three proven techniques to close the knowledge gap in large language models
 • 
Rafa Páez
4
How to Become an AI Engineer
Master the building blocks, the leverage, and the mindset to thrive in AI
 • 
Rafa Páez
The Modular Monolith Advantage
A practical guide to scaling teams and backends in one codebase
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Rafa Páez
9
Build Your First AI Agent
In under 200 lines of Python, I built an agentic AI mentor that teaches, evaluates, and adapts. Here's how you can do it too.
 • 
Rafa Páez
5
The Engineering Leader’s Guide to System Design
What modern leaders need to know to scale teams and platforms, ship reliably, and avoid costly mistakes
 • 
Rafa Páez
14

May 2025

Social Capital: The Compound Interest of Your Engineering Career
How high-agency engineers turn trust, credibility, and relationships into visible impact
 • 
Rafa Páez
5
5 Career Truths Your Manager Can’t Tell You
A no-BS guide for engineers and emerging leaders who want to level up.
 • 
Rafa Páez
6
No Thanks: My 7 Non-Negotiables for a Fair Interview Process
How I protect my time, dignity, and career by setting boundaries against broken hiring practices.
 • 
Rafa Páez
17
The Books That Changed My Life
From leadership to mindset: 46 shelf‑worthy reads that shape how I think, lead, and grow.
 • 
Rafa Páez
8
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