Welcome to DOIS

We’re Thiago and Andreos, two engineers who’ve spent years building systems, debugging prod issues at 3am, and arguing about the right way to structure a codebase.

Why DOIS?

“Dois” means “two” in Portuguese. It’s a nod to our partnership, but also to a philosophy: the best ideas emerge from diverse perspectives.

We built this site to share:

Experiments with AI in real engineering contexts
Opinions on tools, practices, and industry trends (some controversial)
Notes from the messy edge where theory meets production

What to Expect

Our focus areas include:

AI for Engineering

How LLMs and agents are actually being used (not hyped) in software development. We’re building with these tools daily and will share what works, what doesn’t, and why.

Engineering Practice

The craft of building reliable systems. Architecture, testing, ops, and the unglamorous work that keeps software running.

Controversial Takes

We don’t shy away from unpopular opinions. Sometimes the industry consensus is wrong. We’ll explain why—and we might be wrong too.

Our Principles

Pragmatic over dogmatic - What works matters more than what’s “correct”
Show, don’t tell - Real examples beat abstract theory
Honest about trade-offs - Every choice has costs
Evolving, not fixed - We’ll update our views as we learn

Stay Connected

We’re just getting started. New articles will explore topics like:

Prompt engineering patterns that actually help
When to use AI agents (and when not to)
Building observable systems
The economics of technical debt
And much more

Check back regularly, or follow us for updates.

Let’s Talk

See something you disagree with? Have experience to share? We’d love to hear from you. The best conversations happen when perspectives collide.

Welcome to DOIS. Let’s build something interesting together.