Join Capital

VC Firm·Berlin, Germany·Fund III targeting EUR 235M; Fund II was EUR 112M

Join Capital is a Berlin-based early-stage venture capital firm founded in 2015 that invests in deep tech, industrial tech and enterprise tech startups across Europe. The firm focuses on Seed and Series A rounds, typically investing between EUR 1 million and EUR 5 million per deal. Its portfolio spans smart machinery, robotics, defence, dual-use and space technologies. Join Capital is currently raising its third fund, targeting EUR 235 million, with the European Investment Fund committing EUR 50 million through the InvestEU Defence Equity Facility. The firm has invested in over 35 companies across 10 European countries.

Focus Areas

Deep TechIndustrial TechEnterprise TechDefenceDual-UseIndustry 4.0RoboticsSpaceSecurity

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Portfolio

1 company in our directory

QuadSAT

Defence Tech·Series A

QuadSAT is a Denmark-based defence technology company founded in 2017 by Joakim Espeland (CEO) and Andrian Buchi (CTO), who met as mechanical engineering students at VIA University College. Espeland, a Norwegian RF engineer with five years of experience in maritime satellite communications, identified inefficiencies in satellite antenna testing that required expensive ship deployments. The company develops drone-based RF measurement and antenna testing systems, with traction including operational campaigns with OneWeb and the European Space Agency. QuadSAT maintains a UK registered office in London to serve NATO-aligned defence customers across Europe. The company raised €9M in Series A funding led by IQ Capital in 2023, followed by a €5M extension in 2025 led by Join Capital and North Ventures.