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Dive into a collection of past posts and rediscover timeless content.

Careers at FAANG

Shipping Without Fear: Inside Our Zero-Downtime Deployment Culture

Sep 19, 2025

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7 min read

Shipping Without Fear: Inside Our Zero-Downtime Deployment Culture

At hyperscale, speed doesn’t kill. Poor culture does. We unpack how safe rollouts are built through trust, clarity, and muscle memory, not just pipelines and scripts.

Leonardo Furtado
Leonardo Furtado

Packets & Python

Chapter 18: Writing Smarter Network Scripts with Python Lambdas

Sep 15, 2025

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21 min read

Chapter 18: Writing Smarter Network Scripts with Python Lambdas

Python lambdas help you write composable, testable, and elegant logic for device filtering, config validation, and more.

Leonardo Furtado
Leonardo Furtado

Careers at FAANG

If the Control Plane Fails, Nothing Else Matters

Sep 12, 2025

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3 min read

If the Control Plane Fails, Nothing Else Matters

Your data plane moves packets. Your control plane moves decisions. If the latter breaks, the former doesn’t matter. This is how we protect the network’s brain.

Leonardo Furtado
Leonardo Furtado

Architecture and Design

When $100 Million Cloud Bills Make Sense

Sep 8, 2025

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24 min read

When $100 Million Cloud Bills Make Sense

Not all expensive cloud bills are bad, and not all cheap ones are smart. Learn how to interpret cloud cost through the lens of architecture, performance, and business alignment.

Leonardo Furtado
Leonardo Furtado

Careers at FAANG

Networking and Platform Aren’t Separate Systems: They Never Were

Sep 5, 2025

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3 min read

Networking and Platform Aren’t Separate Systems: They Never Were

Network and platform teams are often divided by priorities, tools, and language but they’re solving the same problem. When you bridge that divide, systems stop breaking quietly.

Leonardo Furtado
Leonardo Furtado

Packets & Python

Chapter 17: How Python Functions Turn Repetitive Network Logic into Elegant Automation - Part 1

Sep 1, 2025

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5 min read

Chapter 17: How Python Functions Turn Repetitive Network Logic into Elegant Automation - Part 1

Learn how to write clean, reusable functions that turn your automation logic into maintainable building blocks—shifting from repetition into elegant engineering.

Leonardo Furtado
Leonardo Furtado

Careers at FAANG

Capacity Isn’t What You Think It Is

Aug 29, 2025

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4 min read

Capacity Isn’t What You Think It Is

70% utilization doesn’t make you safe. In hyperscale networks, real capacity is what remains standing after failure. Let’s build for the world as it breaks.

Leonardo Furtado
Leonardo Furtado

Packets & Python

Chapter 16: Automate Repetition - Python Loops for Network Engineers

Aug 25, 2025

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4 min read

Chapter 16: Automate Repetition - Python Loops for Network Engineers

Discover how Python loops eliminate repetitive CLI work, making your automation smarter, safer, and ready for scale, even in complex nested data.

Leonardo Furtado
Leonardo Furtado

Careers at FAANG

PR Accepted, Outage Denied: The Hidden Power of Code Review

Aug 22, 2025

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3 min read

PR Accepted, Outage Denied: The Hidden Power of Code Review

From blast radius awareness to rollback plans and team trust, network code reviews are how we replace heroics with systems. Here’s how to get it right.

Leonardo Furtado
Leonardo Furtado

Packets & Python

Chapter 15: Decision-Making with Comparators and Conditionals

Aug 18, 2025

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20 min read

Chapter 15: Decision-Making with Comparators and Conditionals

From == to if/elif/else, this guide shows network engineers how to teach Python to think clearly, compare accurately, and act intelligently.

Leonardo Furtado
Leonardo Furtado
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The Routing Intent
by Leonardo Furtado

Where network engineering meets clarity, scale, and purpose.

© 2026 The Routing Intent by Leonardo Furtado.
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