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Sebastiaan BerkmanSB

Sebastiaan Berkman

Head of Marketing

€800/day
Rotterdam, NL
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sebastiaan

I work as a commercial manager for organizations that want to structure their growth better. At Coolblue, I had P&L responsibility for a team of 25 people. At Damen, I worked on the commercial further development of digital platforms. I also have experience at scale-ups, where I worked with smaller teams and faster decision-making processes.
I translate commercial strategy into concrete roadmaps and manage teams that execute them, whether that's development, content, or sales.
You hire me when you need a clear commercial direction and someone who ensures that direction is actually implemented. I work best in organizations with a clear vision, where I can switch gears quickly without endless layers of consultation.
Typical work: commercial strategy and positioning, growth plans for brands, team management across multiple disciplines, and connecting product, marketing, and sales.
  • Dutch

    Native or bilingual

  • English

    Fluent

  • German

    Basic

Can work on-site
Rotterdam (up to 50km)

Experience

  • Wellis Health
    Freelance Product Manager
    HEALTH AND WELLNESS
    October 2025 - May 2026 (7 months)
    Rotterdam, Netherlands
    As a freelance product manager, responsible for the commercial positioning of the digital offering in a competitive healthcare market. Translated commercial goals into a clear proposition and worked closely with marketing and sales to achieve customer retention and growth.
    Commercial strategy Product management
  • Damen Yachting
    Freelance Marketing Management Consultant
    LUXURY GOODS
    January 2025 - December 2025 (11 months)
    Vlissingen, Netherlands
    As a freelance marketing management consultant, responsible for the commercial management of the marketing team at Damen Yachting. Introduced structure in roles and priorities, improved collaboration between marketing and sales, and ensured marketing efforts directly contributed to commercial objectives.
    Commercial strategy Product management Team Management
  • Damen Shipyards
    Interim Product Owner
    MECHANICAL ENGINEERING
    May 2024 - December 2024 (7 months)
    Gorinchem, Netherlands
    As an interim Product Owner, responsible for the commercial further development of Damen.com and the MyDamen platform. Increased lead generation and conversion by clearly positioning complex maritime products in the market. Developed MyDamen into an after-sales platform focused on service sales and customer retention. Connected marketing, IT, and business to translate commercial priorities into concrete results.
    Product management Commercial strategy

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Education

  • MSc Business Administration
    University of Amsterdam
    2017
    MSc Business Administration
  • BBA
    Rotterdam University of Applied Sciences
    2016
    BBA

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