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Alejandro Castaño
Alejandro Castaño Duque
About

I build AI systems for marketing. This is the path that got me here.

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.

Authorized to work in Germany.

01Experience

Loona Marketing

Co-Founder · Marketing Automation & AI Systems Lead

2023 to Present

Remote · Berlin / Medellín

  • Built the AI operating layer for half a dozen client accounts: Claude skills, agents and MCP connectors adapted per client, plus n8n workflows. Expert playbooks run in hours instead of days.
  • GA4 + GTM server-side + Meta CAPI with event_id deduplication: lead events browser + server, Event Match Quality 9+/10.
  • Lead automation with Apps Script and n8n: no manual entry; deploys from 30 minutes to seconds with a CLI I built.
  • Local marketing-intelligence environment, callable from Claude: competitor change monitoring, Trends and catalog-diff tools, SERP and TF-IDF gap analysis, AI-crawler and AI-visibility reports.

Sleeplay

SEO & Content Marketing Specialist

2024 to Present

Remote · US e-commerce

  • Claude-based content and product-page systems adapted to the brand, with triangulated research and link and citation checks: 40+ SEO briefs, 45+ product pages, publishing cadence ~3x in 2026.
  • Technical SEO and on-page optimization: organic CTR +24%, average position ~17 to ~10 and clicks +9% in six months vs the prior period.
  • AI-search readiness: crawler access for citation bots, structured data, llms.txt, AI-visibility tracking. Monitoring in Ahrefs, Search Console, Screaming Frog and Microsoft Clarity.

Webcreativa

SEO Analyst, then SEO Specialist leading the SEO area

2022 to 2024

Medellín · Google Partner agency

  • Started as the junior of the SEO team and was promoted to lead the area within the first year: strategy, execution and client reporting for 15+ accounts across legal services, e-commerce, food, real estate, construction, healthcare, tourism and B2B.
  • Technical and on-page SEO, keyword research and content briefs; reporting with Semrush, Ahrefs, Search Console and Google Analytics; bilingual (ES / EN) content.

UPS Global Services

Customs Administrative Assistant

2020 to 2022

Medellín

  • Classified imported goods for correct UK customs duties and validated import data with clients and internal teams.

02Education

2025 to 2026

Gisma University of Applied Sciences

MSc Business Management & Marketing · Berlin

2015 to 2021

Universidad de Medellín

BSc International Business (marketing emphasis)

03Skills

AI & automation

  • Claude
  • Claude Code
  • AI agents
  • MCP
  • n8n
  • Google Apps Script
  • API integration
  • Workflow automation

SEO & GEO

  • Technical SEO
  • GEO / AI search
  • Structured data
  • Core Web Vitals
  • Keyword research
  • Ahrefs
  • SEMrush
  • DataForSEO
  • Screaming Frog
  • Search Console

Analytics & tracking

  • GA4
  • Google Tag Manager
  • Server-side tracking
  • Meta Conversions API
  • Attribution
  • Looker Studio
  • Microsoft Clarity

E-commerce & web

  • Shopify
  • WordPress
  • CRO
  • Web crawling
  • Cloudflare

04Languages

  • SpanishNative
  • EnglishProfessional working
  • GermanElementary, learning