Investing in Early-Stage Tech
to Forge Strategic Strongholds.

The next industrial edge isn’t flashy – it’s foundational.
We invest early, stay close and build companies that can handle the world’s toughest problems. If it can’t lead, scale and last, it’s not worth building.

Defence

Space & Aerospace: Developing reusable spacecraft, cutting-edge satellite systems, and next-gen propulsion technologies to position Europe at the forefront of space exploration and security.

Surveillance & Intelligence: Advancing digital twin technology, next-generation surveillance systems, and spacecraft for space security and debris removal, enhancing intelligence and situational awareness.

Enterprise

Quantum & Advanced Computing: Driving innovation in quantum computing, quantum networking, and high-performance computing to enable secure communications and unprecedented computational capabilities

AI & Cybersecurity: Leveraging AI-driven systems for predictive cybersecurity, workplace safety, and informed decision-making to counter evolving threats and strengthen operational resilience.

Industrial

Advanced Materials & Manufacturing: Pushing the boundaries of lightweight materials, integrated photonic circuits, and advanced manufacturing to create stronger, more efficient, and highly capable defence platforms.

Autonomous Systems & Robotics: Innovating in modular robotics, autonomous mobile systems, and unmanned vehicles to enhance automation and operational effectiveness

Here's the latest

31.07.25

Join Capital

Medium

31.07.25

Building a Strategic Edge: How Defense Is Fueling Technological Progress
Join Capital’s Asymmetric Advantage event convened top thinkers from defense, technology, and policy in Berlin to explore how military needs are catalyzing cutting-edge innovation.

Medium

Building a Strategic Edge: How Defense Is Fueling Technological Progress

17.07.25

Join Capital

Tech.eu

17.07.25

Quadsat raises €5M to advance defence-grade RF geolocation technology
Danish precision spectrum intelligence and RF geolocation solutions company Quadsat, has raised a €5 million extension to its Series A round, led by Join Capital and North Ventures, alongside existing investors Seraphim Space Capital, Export and Investment Fund of Denmark (EIFO), Helge Munk Holding and TPC Management.

Tech.eu

Quadsat raises €5M to advance defence-grade RF geolocation technology

15.07.25

Join Capital

Tech.eu

15.07.25

36ZERO Vision raises €3.6M to expand AI visual inspection platform
Visual quality inspection startup 36ZERO Vision has raised €3.6 million pre-Series A funding to expand the reach of its AI-powered vision operating system for manufacturing.

Tech.eu

36ZERO Vision raises €3.6M to expand AI visual inspection platform

04.07.25

Join Capital

Tech.eu

04.07.25

PhotonPath secures €5.1M to power the future of integrated photonics
PhotonPath, a European pioneer in integrated photonics, has raised €5.1 million Series A funding to accelerate the scale-up of manufacturing for its proprietary silicon photonics chipsets and plug-and-play modules.

Tech.eu

PhotonPath secures €5.1M to power the future of integrated photonics

21.05.25

Join Capital

Medium

21.05.25

Turning Underwater Awareness into Strategic Advantage
For decades, underwater infrastructures like communication cables, pipelines, and offshore platforms have quietly supported global economies and national security. But as geopolitical tensions rise, these once-overlooked systems are now on the front line of national security, needing urgent innovation to secure and monitor them effectively.

Medium

Turning Underwater Awareness into Strategic Advantage