Leonardo Furtado

30+ years building networks. Now helping engineers do it better, faster, and with intent.

Architecture and Design

House of Quality for Networks: Turning Requirements into Real Architectures – Part 1

Feb 2, 2026

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26 min read

House of Quality for Networks: Turning Requirements into Real Architectures – Part 1

A requirements-first approach to choosing routers, firewalls, fabrics, and services that actually fit your network.

Leonardo Furtado

Career Growth

Jan 26, 2026

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14 min read

Onboarding Isn’t Admin Work

How those first 90 days can make—or quietly break—your engineering career

Leonardo Furtado

Career Growth

Stop Laughing at AI: How It’s Actually Coming for Network Jobs (and What to Do About It)

Jan 19, 2026

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20 min read

Stop Laughing at AI: How It’s Actually Coming for Network Jobs (and What to Do About It)

Myths, real risks, and practical ways to use AI instead of being replaced by it.

Leonardo Furtado

Architecture and Design

Jan 16, 2026

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19 min read

When BGP Grows Up

Convergence, MRAI, and control-plane redesign at hyperscale

Leonardo Furtado

Career Growth

Jan 12, 2026

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15 min read

Engineering Blindfolded

How serious engineers frame problems before choosing tools

Leonardo Furtado

Career Growth

Before You Clap Back: Curiosity as a Career Strategy

Jan 5, 2026

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9 min read

Before You Clap Back: Curiosity as a Career Strategy

Empirical and tacit knowledge vs. new ideas, and don’t let your experience trap you

Leonardo Furtado

Architecture and Design

Your Network Doesn’t ‘Agree’ on Anything: A Realistic View of Convergence

Dec 29, 2025

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17 min read

Your Network Doesn’t ‘Agree’ on Anything: A Realistic View of Convergence

What network convergence really is (and isn’t)

Leonardo Furtado

Network Automation

Dec 27, 2025

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13 min read

High Availability for Network Automation Systems

Why your controller is not the network... until it is, during an incident

Leonardo Furtado

Career Growth

Shipping v[Age].0 – Using birthdays as intentional version bumps for your life and work

Dec 22, 2025

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15 min read

Shipping v[Age].0 – Using birthdays as intentional version bumps for your life and work

From ‘Been There, Done That’ to ‘What’s Next?’: A senior engineer’s birthday ritual

Leonardo Furtado

Career Growth

You Can’t Be Senior If You Can’t Read and Write: The Career Cost of Not Paying Attention

Dec 19, 2025

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12 min read

You Can’t Be Senior If You Can’t Read and Write: The Career Cost of Not Paying Attention

The unsexy skill that makes or breaks your career: Reading and writing like a grown-up!

Leonardo Furtado

Careers at FAANG

The Engineering Mindset Behind Reliable Networking Systems – Part 3

Dec 15, 2025

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29 min read

The Engineering Mindset Behind Reliable Networking Systems – Part 3

End-to-end thinking for engineers who carry real-world consequences.

Leonardo Furtado

Careers at FAANG

The Engineering Mindset Behind Reliable Networking Systems – Part 2

Dec 12, 2025

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25 min read

The Engineering Mindset Behind Reliable Networking Systems – Part 2

What it really takes to keep complex systems boring, safe, and fast.

Leonardo Furtado

Careers at FAANG

The Engineering Mindset Behind Reliable Networking Systems – Part 1

Dec 8, 2025

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26 min read

The Engineering Mindset Behind Reliable Networking Systems – Part 1

A deep dive into the core principles for running critical infrastructure without heroics

Leonardo Furtado

Careers at FAANG

Build Systems, Not Sleep-Deprived Heroes: Inside an Autonomous Remediation Pipeline

Dec 1, 2025

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21 min read

Build Systems, Not Sleep-Deprived Heroes: Inside an Autonomous Remediation Pipeline

If your network still relies on people to fix the same faults over and over, it’s not resilient. It’s fragile. Here’s how we changed that.

Leonardo Furtado

Packets & Python

Chapter 27: Managing Python Projects with Poetry — Part 3

Nov 17, 2025

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24 min read

Chapter 27: Managing Python Projects with Poetry — Part 3

Elevate your network automation development environment by adopting these software-focused cultural practices.

Leonardo Furtado

Packets & Python

Chapter 26: Managing Python Projects with Poetry — Part 2

Nov 10, 2025

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5 min read

Chapter 26: Managing Python Projects with Poetry — Part 2

Bring consistency, clarity, and operational safety to your network automation code.

Leonardo Furtado

Packets & Python

Chapter 25: Managing Python Projects with Poetry — Part 1

Nov 3, 2025

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22 min read

Chapter 25: Managing Python Projects with Poetry — Part 1

Bring consistency, clarity, and operational safety to your network automation code.

Leonardo Furtado

Packets & Python

Chapter 24: Foundation Before Features — Pyenv, Poetry, and Venv, Part 2

Oct 27, 2025

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5 min read

Chapter 24: Foundation Before Features — Pyenv, Poetry, and Venv, Part 2

Treat Python versions, virtual environments, and dependencies as infrastructure: predictable, auditable, and production-safe.

Leonardo Furtado

Network Automation

The Hero Trap: How Network Engineering Myths Undermine Scale, Velocity, and Sanity

Oct 25, 2025

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35 min read

The Hero Trap: How Network Engineering Myths Undermine Scale, Velocity, and Sanity

How dependence on network heroes leads to technical debt and operational and business risks

Leonardo Furtado

Packets & Python

Chapter 23: Foundation Before Features — Pyenv, Poetry, and Venv, Part 1

Oct 20, 2025

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4 min read

Chapter 23: Foundation Before Features — Pyenv, Poetry, and Venv, Part 1

Standardizing runtimes across laptops, jump hosts, and CI environments for reliability and efficiency

Leonardo Furtado

Packets & Python

Chapter 22: Taming the Python Jungle — From Pip to Production

Oct 13, 2025

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22 min read

Chapter 22: Taming the Python Jungle — From Pip to Production

Why package management is the foundation of clean, scalable NetDevOps workflows.

Leonardo Furtado

Packets & Python

Chapter 21: From Scripts to Systems with Python OOP - Part 2

Oct 6, 2025

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14 min read

Chapter 21: From Scripts to Systems with Python OOP - Part 2

How OOP cuts through the complexity of infrastructure management by treating devices, connections, and services as real-world objects with unique characteristics and actions.

Leonardo Furtado

Packets & Python

Chapter 20: From Scripts to Systems with Python OOP - Part 1

Sep 29, 2025

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36 min read

Chapter 20: From Scripts to Systems with Python OOP - Part 1

Why OOP solves the mess of sprawling logic, especially in infrastructure where devices, connections, and services have distinct identities and behaviors.

Leonardo Furtado

Packets & Python

Chapter 19: Structuring Network Data for Scale and Speed with Arrays

Sep 22, 2025

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39 min read

Chapter 19: Structuring Network Data for Scale and Speed with Arrays

Learn how Python arrays (and their powerful cousins in NumPy) bring structure, speed, and clarity to network engineering workflows.

Leonardo Furtado

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