Claire Siegert

Senior B2B Marketing Leader | Brand Strategy | GTM & Positioning | Content & Campaigns | Partnerships | Interim Head of Marketing | AI-First Execution

I’m a trilingual (DE/EN/FR) senior marketing leader with 7+ years of experience building and scaling B2B marketing engines for fast-growing companies and corporate brands. As Co-Founder and Head of Marketing & Partnerships at Businettes, I led brand, content, GTM strategy, demand generation, and cross-functional execution while scaling the platform to 7,000+ members across Germany, France & the UK.

My background combines strategic marketing leadership, brand & positioning, multi-channel campaign development, content strategy, B2B partnerships, sales alignment, and cross-functional team leadership. I’ve worked with enterprise players like Dell, Adobe, Lexware, McDonald’s and QVC, leading co-marketing initiatives, revenue-focused campaigns and thought-leadership programs.

I bring a hands-on, AI-first workflow that accelerates execution, improves clarity and enables lean teams to deliver high-quality output quickly. From messaging and narrative development to funnel design, creative campaigns, website optimization or internal enablement – I build marketing foundations that drive measurable impact.

What I support as Freelancer / Interim Head of Marketing

🔹 B2B Marketing Strategy & Execution

🔹 Brand Positioning & Messaging

🔹 GTM Strategy (Launches, Product Marketing, Value Proposition)

🔹 Content Strategy & Production (Social, Blog, Demand Content, Thought Leadership)

🔹 Multi-Channel Campaigns (Organic, Email, PR, Events)

🔹 LinkedIn Strategy (Company + Executive Content)

🔹 Sales Enablement & Revenue Marketing

🔹 B2B Partnerships & Ecosystem Development

🔹 AI-first (automation, content ops, task orchestration)

🔹 Team Leadership & Interim Management (Marketing/Brand/Content)

I am available for interim mandates, fractional Head of Marketing, strategic projects, short-term accelerators or longer-term execution.