Digital Marketing Consultancy
Marketing leadership, without the full-time hire.
I help ambitious SMEs build and run high-performing marketing — from interim CMO engagements to go-to-market strategy and practical implementation.
Services
What I do.
Interim Marketing Leadership
Step into your team as a hands-on marketing leader. I set direction, manage execution, and build the foundations for sustainable growth — without the overhead of a full-time hire.
Go-to-Market Strategy
Launching a new product or entering a new market? I design the full GTM playbook — positioning, channels, messaging, and launch execution.
Marketing Audits & Implementation
Not sure why your marketing isn't converting? I audit your full funnel and deliver a prioritised, actionable roadmap you can implement immediately.
DACH Market
GTM for the German-speaking market.
The German-speaking market — Germany, Austria, and Switzerland — is one of Europe's largest commercial opportunities. But it has a distinct buying culture that punishes copy-paste playbooks from the UK or US.
As a Dutch marketer based in Berlin, I understand both sides: the international ambition to enter DACH, and the on-the-ground reality of what it takes to build trust and convert there. Dutch and German business cultures share directness and pragmatism — but differ sharply in buying timelines, communication style, and what “proof” means to a prospective customer.
Proof over promise
DACH buyers require evidence before trust. GTM strategies must front-load case studies, references, and proof points — not claims.
Adapted, not just translated
Direct language translation rarely works. Positioning and messaging must be rethought for audiences who value precision and technical depth over marketing polish.
Longer cycles, stronger loyalty
Expect longer decision timelines — and plan for them. Once earned, customer relationships in DACH markets tend to be deep and durable.
Privacy-first by default
GDPR is the baseline, but DACH consumers hold data privacy to a higher standard. Channel strategy and consent flows must reflect this reality.
About
Senior marketing,
applied directly.
I'm Sebastiaan Rasterhoff — a marketing leader with over a decade of experience scaling digital marketing for B2B and B2C companies across Europe. I've led marketing teams, built demand generation engines from scratch, and helped companies navigate competitive markets with clarity and precision.
I work best with growing SMEs who need senior marketing thinking — but don't yet need a full-time CMO. I embed with your team, move fast, and make sure marketing connects directly to revenue.
Work with me
Experience
Companies I've helped grow.
Marketing Director Germany
2014 – 2021
Head of Marketing
2021 – 2022
VP of Marketing
2022 – 2025
Interim VP Global Communication & Product Marketing
2024 – 2025
Results
What the work delivers.
3×
ROAS
Tripled return on ad spend for a B2B SaaS company within 6 months of restructuring paid media strategy.
+40%
Lead Volume
Increased qualified inbound leads for a professional services firm through content and SEO restructure.
62%
Reduction in CAC
Cut customer acquisition cost by repositioning targeting and tightening the full conversion funnel.
4 mo
Time to Market
Took a new product from zero to launch-ready — including positioning, channel strategy, and first campaigns.
Metrics are representative of client results. Details anonymised.
Building with AI
I build with Claude Code.
Not a service I offer — a skill I'm mastering. Over the past months I've been shipping real projects with Claude Code, and things have escalated quickly.
This website
rasterhoff.com was built and deployed with Claude Code — Next.js, Vercel, the works. My first real project shipped from scratch, without a developer on payroll.
963supply.com
A full stack in progress: Supabase for the database and auth, a weekly competitor price scraper, product comparison pages, and an admin dashboard. Nearly production-ready.
The honest take
I run a supply company and a marketing consultancy — I'm not a developer by trade. Claude Code gave me a way to build things I couldn't before, without replacing the craft of real engineers.