German drone startup Quantum Systems raises $1.2B at $8B valuation as investors pour billions into AI defense

The race to build autonomous military systems just produced another massive winner.

German drone startup Quantum Systems has raised $1.2 billion in a Series D funding round, pushing its valuation to about $8 billion and cementing its place among Europe’s most valuable defense technology companies. The raise comes as governments and investors ramp up spending on AI-powered defense systems, with autonomous drones moving from niche military tools to strategic assets.

The funding round was co-led by Blackstone, Noteus, Airbus, and Advent, with participation from Bond, Fidelity Management & Research Company, Balderton, and HV Capital. Quantum Systems said the new capital will increase manufacturing capacity, strengthen its supply chain, accelerate deliveries across allied countries, and support continued investment in AI and software.

TechStartups first covered the Munich-based company in November 2025 after it raised $180 million at a $3.5 billion valuation. Less than a year later, Quantum Systems has more than doubled its valuation, a sign of how quickly investor interest has shifted toward autonomous defense platforms.

Commenting on the funding, Quantum Systems co-founder and co-CEO Florian Seibel said: “The future is unmanned. Defense will be defined by autonomous systems that can operate together across domains in real time. With Quantum Systems, we are building a next- generation neo prime that has the potential to disrupt defense as we know it today. We are profitable, deployed around the world and with the latest financing round we now have more than $1.2Bn of dry powder to execute.”

With $1.2 billion in fresh funding, Quantum Systems is betting autonomous systems will define the next era of defense

Founded in 2015 by aerospace engineers Florian Seibel, Armin Busse, and Tobias Kloss, the Peter Thiel-backed startup began with drones built for commercial applications such as agricultural mapping and infrastructure inspection. Russia’s invasion of Ukraine in 2022 changed the company’s trajectory. Demand surged for aircraft capable of supporting military operations without sacrificing their commercial capabilities, pushing Quantum Systems deeper into the defense market.

That transition has paid off. The company said it is now profitable, a milestone that remains rare among venture-backed startups raising billion-dollar rounds.

Its aircraft are no longer limited to the skies. Quantum Systems is building autonomous systems that operate across land, air, and sea, reflecting a broader shift in modern defense strategy, in which connected autonomous platforms are expected to work together during military operations.

Courtesy: Quantum Systems

“Defense will be defined by autonomous systems that can operate together across domains in real time,” Florian Seibel, co-CEO and co-founder of the German start-up, said in a statement.

“With Quantum Systems, we are building a next-generation neo prime that has the potential to disrupt defense as we know it today.”

The company has already established a significant presence in Ukraine, where it said its systems completed more than 19,000 missions during 2025. Quantum Systems has since expanded its manufacturing footprint across Germany, Ukraine, the United States, Australia, Romania, the United Kingdom, and the Baltic states.

The investment reflects a much larger shift across the defense technology sector. Investors have poured a record $17.4 billion into defense startups so far this year, CNBC reported, citing Dealroom data. The total amount already surpasses the $11.2 billion invested in all of 2025.

Much of that capital has flowed into autonomous systems and AI-driven military platforms. In the United States, Anduril raised $5 billion in May. Earlier this year, Saronic Technologies secured $1.8 billion in funding, and Shield AI closed a $2 billion funding round, underscoring investor appetite for companies building autonomous defense capabilities.

Europe is seeing the same momentum. Helsing is reportedly raising $1.2 billion at an $18 billion valuation, according to the Financial Times. Last month, Stark secured €500 million in a funding round led by Sequoia Capital and Peter Thiel’s Founders Fund.

Blackstone says the surge in investment reflects a lasting change in the market rather than a temporary spike in defense spending.

“A structural shift in the European defense market has created significant demand for capital to support the sector’s development and the adoption of advanced technologies,” said David Kaden, senior managing director at Blackstone.

Quantum Systems’ latest raise sends a clear message about where investors believe the defense industry is headed. AI is reshaping military operations; autonomous systems are becoming central to national security, and startups building those technologies are attracting funding at a pace rarely seen outside enterprise AI.

Quantum Systems (Credit: Credit Systems)