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Alejandro Castaño
Open to roles in Berlin

Marketing automation & AI systems · Berlin

I build the AI systemsthat make marketing run faster.

Claude agents, MCP connectors and n8n automations that research, write, audit and report, so a team scales its output without scaling headcount. Hands-on in technical SEO and GEO, and in tracking.

What I do

Three things, kept narrow on purpose.

  1. 01

    AI marketing systems

    Claude skills, agents and MCP connectors adapted to each client, wired to Search Console, GA4, Ahrefs, SEMrush, DataForSEO, Screaming Frog and Shopify. Expert playbooks run in hours instead of days. I extend the stack with vetted open-source repositories, run locally.

    Claude · MCP · n8n · Apps Script

  2. 02

    Technical SEO & GEO

    Crawlability, structured data, Core Web Vitals and AI-search readiness: crawler access for citation bots, llms.txt, citable content. Measured in Ahrefs, Semrush, DataForSEO and Search Console.

    Screaming Frog · Schema.org · llms.txt · Core Web Vitals

  3. 03

    Analytics & tracking

    GA4, Google Tag Manager server-side and Meta Conversions API with event_id deduplication, so the numbers behind the systems are real. Reporting in Looker Studio.

    GA4 · GTM server-side · Meta CAPI · Looker Studio

Proof

Real numbers, from the tools.

+24%
organic CTR, with average position from ~17 to ~10
Sleeplay, six months vs prior period, Search Console
x3
organic clicks on a client store in six months
Loona Marketing, Search Console
9+/10
Event Match Quality on lead events, browser + server
Meta CAPI with event_id deduplication, Events Manager

Rounded on purpose. Sources: Google Search Console, Meta Events Manager, Shopify.

About

From junior SEO to building the systems.

I started in SEO at a Google Partner agency in Medellin in 2022, went from junior to leading the SEO area for 15+ accounts, and kept hitting the same wall: good playbooks run by hand do not scale. So I started turning the playbooks into systems.

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