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The Density Labs newsletter.

Operator level thinking on AI engineering, embedded delivery, and what actually ships in mid market production environments. Two long form posts a month. No fluff, no marketing.

What we write about

Four things we keep circling back to.

The things our engineers wish their last team had known before the AI pilot stalled. Patterns from our own work, drawn directly from active engagements.

01 // RAG in Production

Architectures that survive contact with real data.

What works when the corpus is messy, the queries are weird, and the customer expects an answer in 800ms. Hybrid retrieval, reranking, eval harnesses, the unglamorous parts.

02 // Embedded Economics

Embedded AI engineers vs. US hires.

What a real US senior costs all in. What an embedded LATAM senior costs all in. The hidden lines on both. Why the comparison usually leaves out tenure, which is the line that matters most.

03 // The Density Method

What we have learned running it for a decade.

Field notes from the framework. Why the diagnostic phase is paid. Why the 30/60/90 has the shape it has. What goes wrong when teams skip the match phase.

04 // Mid Market AI

The plays we see working at $50M to $500M.

Not Series A speculation, not Fortune 100 procurement theater. Real AI initiatives at the size of company where the budget is real and the constraints are too.

From the founder

Long form writing lives at ramallo.io.

Federico Ramallo's long form writing, the PreVetted Podcast, and the upcoming book The Invisible Distance all live at his personal site. The personal assets live there. The company assets live here.

Both compound. If you want the operator's voice rather than the company's, that is the place to start.