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KALTWASSER.io

About Martin Kaltwasser.

I help companies become visible in Google and in AI answers and turn that into customers. To do this, I combine SEO, GEO, content and the question of what convinces visitors.

Martin Kaltwasser

Making an impact.

Why work with me

For 15 years, I have combined courage in decisions with discipline in execution. I know both sides of the table and hate burning your money as much as my own. Marketing that counts.

How we work together

You know where you stand, what is holding you back and what comes next. I analyze, set priorities and support the implementation with your team. I also tell you which measures you can save yourself.

Digital visibility is not created in isolation in the SEO team. It emerges where content, technology, brand, and product interact meaningfully.

What clients say.

Hans Ratzmann
CEO, quiteBOLD, Digital Marketing Agency
Working together 2019–2026

As a digital marketing consultancy, GEO and SEO are omnipresent in our clients' everyday lives. And we automatically bring Martin into every project. Every time super valuable input that we wouldn't want to miss.

Jan-Philipp Kötting
CEO & Co-Founder, PropertyPilot GmbH
Working together since 2026

In the ongoing development of our brand and performance marketing strategy, Martin is a difference-maker. He brings key impulses to the table and helps us find our focus again and again.

Dimitri Barkov
Platform & CRM Manager, Wolfsblut
Working together 2024–2026

Clear strategy, concrete recommendations, no buzzword bingo. Martin thinks from the customer's perspective, is quick to reach, and delivers reliably, even for complex topics like AI Search. Absolute recommendation.

Ben Jost
Founder and Managing Director, TrustYou GmbH
Working together 2024–2026

Martin combines strategic marketing understanding with deep SEO, GEO, and performance expertise in a way rarely found. He understands how brand, content, visibility, and growth interact, translating complex challenges into clear, actionable recommendations.

Uli Weißgerber
CEO Promipool GmbH
Working together 2018–2026

Martin really dives into the matter and brings honest know-how without putting his ego in the foreground. This combination of professional depth and humanity creates the best foundation for achieving joint goals.

Marco Barooah-Siebertz
Managing Director, Superblau GmbH
Working together 2024–2026

Working with Martin is simply fun, even if there's a bit of friction now and then. That's exactly his strength: He uses friction to improve ideas and doesn't stop until the result is spot on.

Career.

The overview shows Martin Kaltwasser's leadership positions. Martin Kaltwasser has been continuously self-employed under KALTWASSER.io since April 2018; the positions at PRYNTAD and TrustYou ran in parallel.

2024 to 02/2026
VP Global Marketing and CMO at TrustYou GmbH, Munich. Responsibility for Rebrand and Go-to-Market of the vision Hospitality AI
2019 to 2024
Co-Founder & Managing Director at PRYNTAD GmbH, Hamburg. Funding: 1.5M Euro, Exit 2025
2016 to 2018
Managing Director Digital at EAT SMARTER GmbH & Co. KG, Hamburg
2012 to 2016
Head of EatSmarter.de at EAT SMARTER GmbH & Co. KG, Hamburg
2010 to 2012
Head of Lecker.de at Bauer Media Group, Hamburg
2008 to 2010
Project Manager Digital at Bauer Digital KG, Hamburg

Freelance work

Since April 2018
Digital Marketing Strategy Consulting: SEO Consulting, GEO Consulting, Product Development, Programmatic Advertising, Digital Brand Development, Growth & Performance Marketing
2019 to 2024
Contracted by radio.de GmbH, partly as Interim Head of SEO

Achievements & milestones.

TrustYou GmbH (2025)
Rebrand and international market launch of the company vision Hospitality AI.
radio.de GmbH (2019 to 2024)
Strategic SEO realignment and international SEO setup across 20 markets with 11 languages.
EAT SMARTER (2018)
Scaling to Germany's third-largest food portal with over 10 million monthly visits, 75 percent of which is organic traffic. Source: IVW figures 2018
Bauer Media Group (2012)
Building lecker.de into the top 5 German food portals. Source: IVW figures 2012

Clients and projects.

Media and Publishing
Axel Springer, Funke Mediengruppe, radio.de, Promipool
Food and Pet Food
Savencia, Wolfsblut, WILDCAT (Healthfood24)
Savencia: Platform and Brands
Ich liebe Käse, Géramont, Bresso, MILKANA, Chavroux, Saint Albray, Le Rustique, Fol Epi, Giovanni Ferrari, Brunch
Real Estate and PropTech
Engel & Völkers, Immowelt, PropertyPilot
Software and Platforms
Shelly Group
Agencies (White Label)
thjnk, For Sale Digital, quiteBOLD, Superblau

As of 10/2026. Some engagements ran through agency partners. Named with the consent of the companies listed. Leadership positions are listed separately under Professional Background.

All facts on the Grounding Page

Where do you currently stand?

I will look at your situation and give you concrete first assessments: where the real levers are and what matters next.

  • 30-minute call
  • Free and without obligation
  • Concrete first assessments
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