WelcomeBerlin Marketplace
Haris Rehman. Rapid Venture Lab. Turn Your Expertise Into a Business That Works.
Product strategy and venture building for founders and operators in Berlin. From first idea to first revenue.
About
I work with founders, freelancers, SMBs, and domain experts who need structure around what they’re building. That could mean validating a new idea before committing to it, fixing go-to-market on something that’s already live, scaling what’s working, or launching a new line of business from inside an existing one. I bring the product and commercial thinking to make it happen.
What I offer
—System Review: A structured diagnostic of your idea, market, and business model. You get a clear read on what’s viable, what’s missing, and what to prfioritize.
—Growth Sprint: A focused engagement around one high-leverage problem. Positioning, pricing, first customers, go-to-market. We pick the bottleneck and solve it.
—Ongoing Partnership: Monthly embedded advisory for founders and SMBs who need senior product and growth support without a full-time hire.
Why Founders Work With me
✴️ Execution-first. No decks, no theory. I work on the actual business with you.
✴️ Cross-industry pattern matching. Renewable energy, eMobility, logistics, proptech, aerospace. EU, Middle East, South Asia market entry.
✴️ Built for operators. Most of my clients are product people or domain experts building their first commercial engine.
Let's talk
Or Send me a message
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