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Sören GrebSG

Sören Greb

Change Communication & Marketing

€1,000/day
Köln, DE
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sören

Marketing Leadership meets Transformation: When Brand, Culture, and Innovation Come Together

Are you looking for a Marketing Leader to navigate your company through transformation phases? I am your partner for Marketing Excellence with transformation expertise.

What I offer you:

As an Interim CMO, I bring 25+ years of experience from corporations (Converse, Brooks Sports, Atradius), tech start-ups, and SMEs. I combine strategic marketing with change management – a rare combination that makes the difference when it comes to real change.

My Specialization:

Marketing mandates in transformation contexts: Post-merger integrations, rebranding, brand launches, culture development, and innovation programs. I combine Marketing Leadership with Change Communication and create the conditions for transformation to be lived.

Concrete Results:

- 22% increase in brand preference at Converse through 360° campaigns
- Post-merger integration Atradius: Global brand launch in 40 countries, 17% image improvement
- Culture development TechniSat: 300 employees activated, 23 team projects for innovation culture, change communication
- Viral launch planhero: 42 qualified sales meetings

What sets me apart:

I understand marketing as an organic system of brand identity, culture, and innovation. With theBrand Holosphere Frameworkand the **8 Fields of Innovation Culture**, I bring methodical clarity to complex transformations. I moderate C-level workshops, develop campaigns, and create cultures where innovation arises.

My Project Types:

- Interim CMO / Head of Marketing (3-12 months)
- Post-merger Marketing Integration
- Brand Development & Rebranding
- Mission Statement and Culture Development
- Launch Campaigns (B2B & B2C)
- Change Communication & Stakeholder Management

Industries:Tech/Software, Consumer Goods, Healthcare, Insurance, Foodservice

Let's talk!
  • German

    Native or bilingual

  • English

    Fluent

Can work on-site
Köln (up to 50km)

Experience

  • TECHNISAT Digital GmbH
    Project Manager: Innovation Culture & Change Communication
    April 2024 - May 2025 (1 year and 1 month)
    Köln, Germany
    • Led the 13-month transformation project from conception to embedding.
    • Managed 6 strategic workshops with the management board, department heads, marketing, and culture ambassadors.
    • Budget responsibility for external service providers and measures.
    • Reported directly to the management board.

    Successes:
    • 300 employees, 15 managers surveyed in Culture Survey, Culture Map created with cultural deficits for goal-oriented transformation measures.
    • 8 validated guiding principles for innovation culture developed and embedded in the organization.
    • 23 self-managed team projects initiated and accompanied for cultural change.
    • Innovation narrative "Time to come back, TechniSat" developed with internal design system.
    • Measurable improvement: Innovation mindset strengthened, trust in management increased.
    • Successful exit: Organization "ready for innovation".
    Innovation Management Company Culture Management Change Communication Project Management Stakeholder Management
  • PLANHERO GmbH
    Interim CMO: App Launch in the Healthcare Market
    March 2022 - May 2022 (2 months)
    • Full marketing responsibility from strategy to implementation.
    • Management of external service providers (agency, freelancers).
    • Budget responsibility for launch campaign and trade fair appearance.
    • Go-to-market strategy with scalable marketing automation funnel.
  • BAMA Gruppe
    Interim Project Manager: Brand Transformation
    September 2019 - March 2022 (2 years and 6 months)
    Mandate: 6-month project management for complete modernization of the traditional brand with development of a new brand portfolio (Client: CROMATICS Dresden)

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Education

  • Transformation Facilitator
    mermaid & broccoli
    2025
    Transformation Facilitator (Zertifikat)
  • Diplom-Kaufmann
    FU Berlin
    1993
    Diplom-Kaufmann, Schwerpunkte Marketing & Organisation/ Führung

Skill set

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