Martina Hernandez

S

Head of Marketing at Hollow Works · creative testing, Google Ads

Hollow Works
Madrid, Spain · CET (UTC+1)
8+ years experience
École Polytechnique
English, Spanish
Advising
Messaging unavailable

Overview

Based in Madrid. I lead performance marketing at Hollow Works. Rebuilt the acquisition reporting so every rupee and dollar of spend is traceable. Cut blended CAC by 36% while doubling spend. Most at home with CRM and Google Ads. I host a monthly meetup on performance marketing.

Good reasons to reach out
  • Advice on performance marketing
  • Speaking or podcast invitations
  • Questions about performance marketing
Please don't message about
  • Offshore staffing offers
  • SEO and link-building offers
  • Guest post swaps
Skills
creative testingCRMGoogle Adsattribution
AdvisingOpen to advising
closes in 3 months

Office hours for early-stage teams: performance marketing and Google Ads

Topics
performance marketing, CRM, creative testing
Format
Calls
Terms
Equity
Capacity
One advisory role at a time
Best for
Teams scaling past 50 people

9 years of performance marketing. Can review plans, decks and hiring loops.

Madrid, Spain · remote OKgoogle adscreative testingattribution
Open

Experience

  1. Head of Marketing
    Mar 2026 - Present
    Hollow Works · 7 mo · Full-time · Madrid, Spain
    • Rebuilt the acquisition reporting so every rupee and dollar of spend is traceable.
    • Ran 449 creative tests a year across paid social.
  2. Product Marketing Manager
    Feb 2024 - Mar 2026
    Bosch · 2 yr 1 mo · Contract · Madrid, Spain
    • Launched the creator product in 7 markets.
    • Took creator activation from 35% to 41% in three quarters.
  3. Growth Marketing Manager
    Apr 2021 - Feb 2024
    Volvo Cars · 2 yr 10 mo · Contract · Madrid, Spain
    • Launched 5 campaigns, 3 of them in new markets.
    • Cut blended CAC by 38% while doubling spend.
  4. Marketing Associate
    May 2018 - Apr 2021
    Nokia · 2 yr 11 mo · Full-time · Madrid, Spain
    • Ran 545 creative tests a year across paid social.

Projects

Performance marketing benchmark
2025

Reproducible benchmarks comparing CRM and attribution on real workloads.

Side project: a reading list app
2022

Built with creative testing and attribution. 3315 people used it last year.

References

No references yet.

Education

  1. École Polytechnique
    Ingénieur, Economics
    2012 - 2016

Details

Compensation expectations
What they are targeting for their next role.
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Direct contact details
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