Deltrac · Defence technology · In stealth
Defending Europe's sovereignty.
Deltrac is a European defence technology company. We bring AI, hardware and advanced materials together, from first principles, to protect what Europe cannot afford to lose: its sea lanes and subsea cables, its airspace, its networks, its grid and its water.
AGILE, the EU's new programme for agile and rapid defence innovation, adopted in 2026.
Forecast raise for European defence startups in 2026, about four times the year before.
Invested in European counter-drone technology this year.
Ireland's accelerated budget for counter-drone systems, 2026.
Europe moves at the speed of its narrowest point.
Why we work only on constraints, and how we choose them.
Reindustrialisation is a throughput problem.
Europe has capital, engineers and demand. Its output is capped by a handful of constraints: AI compute, power, the protection of the infrastructure it already runs, and the factories it needs to stop importing what it depends on.
Work anywhere other than the constraint changes nothing downstream. So Deltrac works only on the constraint, and moves to the next one once it gives.
We pair software and applied AI with industrial manufacturing, because most of Europe's bottlenecks are physical. Code alone does not protect a cable or build a sensor. Code makes the hardware cheaper, faster to produce and able to run without people watching it.
A problem qualifies only when all three hold.
- 01
It caps Europe's capacity
Removing it measurably grows defence, energy, compute or industrial output.
- 02
Europe depends on others for it
Today the answer is bought from the US or China, or does not exist.
- 03
Software changes its cost curve
Applied AI makes it faster, cheaper or more autonomous than the incumbent way.
Four domains. One watch.
Critical infrastructure
The grid, water systems and the facilities that keep a country running.
Cyber
Defending the networks that run critical systems.
Airspace
Counter-drone defence for the sites that drones now threaten.
Maritime and subsea
Sea lanes, ports and the cables that carry Europe's data and power.
DELTRAC: for those who think outside the box.
The Dirac delta is zero everywhere except at a single point, where everything is concentrated. That is how we work: all of our effort goes into the narrowest points.
In 1928 Paul Dirac wrote an equation that required a particle nobody had seen. The positron was found in 1932. The lesson we take from it: reason from first principles to what's missing, then build it.
Anderson, 1932
Dirac was also a famous misfit: literal, near-silent and wired differently from everyone around him. Deltrac is built for people like that, whose way of seeing is easy to overlook and suited to hard constraints.
Evan Fahy
Founder of Deltrac. He studied Mathematical Science at the University of Galway, dropped out, became a professional-level athlete, lived with Buddhist monks, slept on marble floors, and has now come home to build. Deltrac grew out of his research into where Europe's capacity runs out: compute, power, defence and the infrastructure underneath them.
- Mathematics
- Mathematical Science, University of GalwayOne of Ireland's most selective maths degrees. Dropped out in year two of four.
- Based
- Galway, Ireland
In stealth · Raising pre-seed
Back Europe's defence early.
Deltrac is raising a pre-seed round and applying to European defence programmes. If you back technical founders early, or you are responsible for infrastructure that keeps you up at night, we would like to talk.
Deltrac builds defensive systems only: we detect, protect and defend. It will stay majority European-controlled, which keeps EU defence and dual-use programmes open to it. Minority investment from US and other allied funds is welcome.