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Mar BarretoMB

Mar Barreto

Growth Specialist

€350/day
Barcelona, ES
3-7 years

Average response time: 1 hour

About Mar

Vibe Coder passionate about scaling businesses through data, automation, and creativity.

My career is rooted in a background as a Marketing and Partnerships Manager. A key highlight was leading the end-to-end execution of the first "Latin Data Week," which generated an 807% ROI.

Since 2024, I have pivoted my focus to Data Analytics and AI Automation. As a freelancer, I deliver data-driven solutions including:

Smart Customer Support: Developed an AI-powered chatbot for a marketing agency.

Customer Retention: Built an automated reminder system to increase the Lifetime Value (LTV) for an automotive company.

Conversion Optimization: Designed a high-performing Go-to-Market landing page for an e-commerce brand.

Beyond technical delivery, I am an experienced educator. I have taught Data Analytics and Growth Marketing to over 150 international students, including executive-level managers at Uber.
  • Spanish

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Independent
    AI Growth Systems Consultant
    DIGITAL AND IT
    January 2025 - Today (1 year and 5 months)
    • ● Built AI-powered lead systems (n8n + HubSpot) automating 100% of inbound leads.
    • ● Designed AI SEO / LLM visibility strategies to increase brand discoverability.
    • ● Developed AI-assisted GTM strategies for niche products.
    • ● Created automated content engines across multi-channel platforms.
  • Le Wagon
    Marketing Manager & Data Instructor
    January 2021 - January 2026 (5 years)
    • ● Scaled market presence by +70% through growth campaigns and partnerships in Campus Mexico and Latam.
    • ● Led Latam Data Week (1,000+ registrants) achieving 8,321% ROI.
    • ● Built KPI dashboards (Looker Studio, Power BI) for leadership decision-making.
    • ● Trained 200+ professionals in SQL, analytics, CRM automation.
  • She Loves Data (NGO)
    Automation & Data Analyst
    January 2024 - January 2025 (1 year)
    • ● Built automation workflows reducing onboarding time by 40%
    • ● Improved data accuracy through system integrations.

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Education

  • AI Agents Certification
    Anthropic
    2026
    AI Agents Certification
  • Data Analytics
    Le Wagon
    2024
    Data Analytics

Certifications

Skill set

Categories