About

My name is Julien Delbauve. I build Context Warehouses for marketing agencies. Based in Spain, originally from Belgium, ran paid media across Europe, the Middle East, and North America for most of my career.

How I got here

I spent eight years as a media buyer. Google Ads, Meta, TikTok, DV360, GA4. Fast, organized, knew every corner of every platform. I thought that was the expertise.

Then someone explained to me how APIs work. Every button in every ad interface is just a piece of code sent to a server. The interface exists because humans couldn't write that code themselves. It was always a translation layer, not the work.

I started building workflows to replace the clicking. At some point I realized I hadn't logged into an ad platform in weeks. The campaigns were still running. The reports still went out. I was just no longer the one doing the execution.

That solved the operational problem. But it uncovered a second one.

When a media buyer leaves an agency, around 75% of the account knowledge leaves with them. The context lives in someone's head: which promo ran when, why that CPA spike happened, which client changed their tracking mid-flight. None of it is in the data. So when AI reads the data, it reads it blind.

You get generic recommendations because the model is working without context. Lower your bids. Broaden your targeting. It doesn't know conversion tracking was broken for three days. It doesn't know the Q4 promo inflated the numbers. Same model, missing foundation.

That's what a Context Warehouse solves. The campaign data lives in BigQuery, refreshed daily through the official platform APIs. Every change, client request, broken pixel, competitor launch, and seasonality note goes into a structured context layer, tagged by account and date. An AI reads both. It finally knows what it's looking at.

The knowledge stops living in someone's head. It lives in the system.

What I build

A fixed-scope infrastructure build. Your warehouse, your cloud, your data. Not a SaaS subscription. Not another platform to manage. Infrastructure you own, with an optional maintenance retainer if you want ongoing support.

I work with marketing agencies whose teams spend most of their time on work that should be in a system. And with agencies that have already lost institutional knowledge when someone left, and don't want to lose it again.