Approach
From First Check to Full Scale
We don’t just invest—we commit. Deep tech isn’t built overnight, and scaling it takes more than money. We back early-stage companies with real IP, work closely with founders, and bring the experience, networks, and conviction needed to turn technology into impact.
Resilience isn’t optional – it’s the foundation of prosperity, security, and progress. We invest in the technologies that keep economies running, industries advancing, and nations strong.
Industry, enterprise, and defence aren’t just sectors; they are the foundation of a competitive and stable future.
We back the founders who see what others miss and build what others won’t – solutions that don’t just scale but endure.
We invest €1–5M at Pre-Seed to Series A, focusing on founders building deep tech with real IP and a clear advantage over legacy systems.
TRL 3 and beyond is our minimum requirement and actual user or customer feedback strongly appreciated.
Our focus is Europe and NATO-aligned regions, where geopolitical shifts are reshaping industries. We lead or co-lead, take board seats, and stay engaged because deep tech takes time, and we’re in it for the long haul.
Investing in deep tech means backing what’s hard, complex, and mission-critical. We go beyond capital and work alongside founders to navigate markets, scale technology, and ensure game-changing innovation doesn’t just stay in R&D.
The Ambassador Network plays a critical role. We connect founders with leaders who’ve operated at the highest levels – whether in industry, defense, or enterprise – helping them secure customers, navigate supply chains, and win the deals that matter.
Funding is just the start. Scaling deep tech requires partners who understand the landscape, anticipate challenges, and stand firm through the long game. That’s where we come in.
Joe Griston
Co-Founder Generative Engineering
Among all the VCs we spoke to, we had a really good feeling about Join because we realised that they truly understood what we want to build. They know the engineering toolchain inside out and proved that their network is not just talk but real.
Florian Grigoleit
Co-Founder, Modelwise
This is our first company. We are all engineers. We know how to build groundbreaking tech, but it was clear that we needed a partner with experience in building a commercial success. Join’s Ambassador Network was instrumental in getting our tech in the hands of leading companies for validation.