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Notes on data, dbt and AI.

Field notes on data warehouses, dbt, governance and AI — written with the same discipline I use to write SQL: clear, tested, and free of fluff.

April 21, 2026· BI· Governance

Duplicated metrics: the silent problem killing trust in BI

Three dashboards, three different revenue numbers, one very anxious CFO. Why this happens, what it costs you, and a one-week exercise to fix it.

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April 14, 2026· dbt· Data engineering

dbt for small teams: how to start without overcomplicating

dbt looks like overkill when you're a team of one. It isn't, but the way most tutorials introduce it is. Here's the minimum viable setup that scales.

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April 7, 2026· Strategy· Data leadership

What is a data concierge, and when does a company need one?

A data concierge sits between a fractional CDO, a boutique agency, and a senior freelancer. Here's what the role actually does, who it's a good fit for, and how it compares to the alternatives.

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March 31, 2026· Hiring· Strategy

How to hire a data consulting service: an honest buyer's guide

The data consulting market is split between expensive firms with junior delivery teams and senior freelancers with no continuity. Here's what to ask, what to avoid, and how to pick a structure that fits your problem.

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March 24, 2026· Brazil· LGPD

Data consulting in Brazil: LGPD, the AI rush, and a uniquely complex market

Brazil isn't just the US data consulting market translated. LGPD, a less-mature data infrastructure baseline, and a fast-moving AI hype cycle make it one of the more interesting markets in 2026.

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March 17, 2026· Agribusiness· Brazil

Why Brazilian agribusiness needs a data concierge

Brazilian agribusiness is one of the most production-sophisticated industries in the world and one of the least structurally data-mature. Here's how the concierge model fits a cooperative, a multi-farm group, or a trading company.

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