Europe's defence industrial base needs more than 250,000 additional engineers and skilled technicians over the next five years, according to ASD Europe, the industry's main trade body. A quarter of the existing workforce is at or near retirement age, while attrition runs at 13 per cent, more than four times the US rate, as engineers leave for better-paid roles in tech, automotive and consulting.
The European Defence Agency lists autonomy engineers, cybersecurity specialists, data processing engineers and software designers among the hardest roles to fill. The EU's Defence Skills Action Plan, presented by Commissioner Andrius Kubilius in March 2025, targets the reskilling of 600,000 workers by 2030, but retraining pipelines take years and startups are already competing for the same scarce pool of engineers who could just as easily join a FAANG company or a fintech scaleup.
That competition has made defence startup careers in Europe unusually attractive for candidates who know where to look.
1. You own entire systems, not features
Quantum Systems in Munich hires AI engineers who work across the full pipeline: training deep learning models in Python, Rust or C++, optimising them for deployment on NVIDIA Jetson hardware, and integrating them with live drone sensor data. Milrem Robotics in Estonia has engineers writing C++, Python and Rust, then testing their code on unmanned ground vehicles heading to European armed forces. Harmattan AI in France asks embedded software engineers to design UAV architectures from scratch.
At a 30-person company, a senior engineer carries the kind of technical responsibility that would require a principal or staff title at a larger firm. Career progression is faster when there are fewer layers between you and the CTO, and at many of these companies the CTO still writes code.
2. Products reach real users in months
Harmattan AI was founded in April 2024. By September 2025, it had won a contract to supply up to 3,000 autonomous drones to the UK Ministry of Defence. Helsing began delivering several hundred HX-2 loitering munitions per month to Ukraine in early 2026. Quantum Systems' Vector drones were deployed in Ukraine and with several NATO partners.
Defence startups ship hardware and software on 6 to 12 month cycles, driven by operational urgency that most commercial sectors do not have.
3. The mission became personal after February 2022
Antoine Bordes spent nine years at Meta as the company's most senior AI researcher in Europe before leaving in 2023 to become VP of AI at Helsing. He told La Tribune it was "a quest for meaning" and that as an engineer, his work would contribute to collective security. He told Bloomberg the outbreak of war in Ukraine was the main driver.
He is not the only one to make that calculation. Marie Inuzuka, a product manager who previously worked at OpenAI and Palantir, joined Paris-based Comand AI last year. Michael Rowley, a 20-year-old British student, turned down offers from accounting firms and commercial AI companies to join Tiresias, a defence startup building troop-tracking sensor technology. He told Reuters it was "the opportunity to do meaningful work."
The number of top AI engineers working in European defence reached 1,700 in 2024, up from 144 a decade earlier, according to the Zeki State of AI Talent Report. Stelios Koroneos, founder of Variene.ai, told Reuters that young people had started realising freedom does not come for free.
4. The money is serious, but works differently
VC investment in European defence, security and resilience startups reached $8.7 billion in 2025, up 55 per cent year on year, according to a Dealroom and NATO Innovation Fund report. AI accounted for 44 per cent of all defence startup funding. Helsing is valued at €12 billion, Harmattan AI at $1.4 billion and TEKEVER at more than $1 billion.
Technical roles at European defence startups pay roughly 15 to 30 per cent less than equivalent roles at large tech companies, according to recruiters and compensation data, though Sifted reported in 2025 that salaries have risen sharply as companies compete for scarce talent. Equity packages have become standard at most Series A and later defence companies, partly to close the remaining gap.
The equity calculus in defence differs from typical venture-backed companies. Where defence startups succeed, the exit tends to be an acquisition by a prime contractor, not an IPO. Rheinmetall, Leonardo and Hensoldt are using rising stock valuations to acquire smaller companies, and Bain reports that private equity deal activity in European defence has roughly doubled over the past five years, while venture deal volume has nearly quadrupled. An acquisition by a prime changes both the timeline and the probability of a payout compared to a typical SaaS exit.
5. Hub density creates a career safety net
A Dealroom and NATO Innovation Fund report named Munich Europe's leading defence startup hub, with Germany attracting $2.1 billion in defence, security and resilience VC in 2025 alone. Helsing, Quantum Systems, Isar Aerospace and ARX Robotics are all based in the Munich metro area. If one of those companies does not work out, the others are a short commute away.
Estonia has seen similar concentration. Ragnar Sass, the founder of Darkstar and one of Estonia's most prominent tech figures, estimates that Estonia now has at least 100 defence startups, up from about a dozen three years ago. Milrem Robotics, Cybernetica, Frankenburg Technologies and dozens of smaller firms are clustered in and around Tallinn. The UK has a broader spread, with four of the top ten European defence startup cities located across Britain, though no single UK city matches Munich's density.
If your first defence startup runs out of funding or pivots away from your expertise, being in a hub means your next opportunity does not require relocating. A role at a company in a city with one defence startup is a higher-risk bet than the same role in a city with dozens, because the fallback options are completely different.
What holds people back
Security clearance is the most common concern, and the most misunderstood. Many defence startup roles require no clearance at all, especially at dual-use companies working on commercial applications of military technology, and where clearance is needed the employer sponsors and manages the process. Some classified programmes do require it, the process can take months, and citizenship restrictions apply in several countries. Our guide to getting a job in European defence tech covers clearance in detail.
Ethical questions are personal. Some engineers have reservations about building military technology, and that is a reasonable place to land. The European defence startups hiring most aggressively tend to work on defensive systems, surveillance, logistics and intelligence rather than offensive weapons. But the line is not always clean, and you should understand what a company builds before you join.
Who is hiring
These nine companies are actively recruiting engineers across Europe, spanning AI, drones, space, ground robotics, maritime surveillance and cybersecurity.
Helsing (Munich, Berlin, Paris) builds AI for military decision-making. Valued at €12 billion after raising €600 million in mid-2025, it is Europe's most valuable defence startup. The Bundeswehr awarded Helsing an initial €269 million contract for HX-2 loitering munitions in early 2026.
Founded in April 2024, Harmattan AI (France) won contracts with both the UK and French armed forces within 18 months. Dassault Aviation led a $200 million investment round in January 2026, valuing the company at $1.4 billion.
Isar Aerospace (Munich) is building European launch vehicles and recruiting hardware engineers, propulsion specialists and flight software developers.
In Finland, ICEYE operates a SAR satellite constellation for persistent earth observation, with engineering roles spanning satellite systems, signal processing and data analytics.
Milrem Robotics (Estonia) builds unmanned ground vehicles for military logistics and reconnaissance. Their THeMIS platform is in use with several European armed forces.
Portuguese unicorn TEKEVER operates maritime surveillance drones with NATO navies and surpassed a $1 billion valuation in May 2025, backed by the NATO Innovation Fund and Baillie Gifford. The company launched a five-year £400 million development programme in the UK.
Quantum Systems (Munich) builds reconnaissance drones with GPS-denied navigation, deployed in Ukraine and with several NATO partners.
In Prague, ZAITRA works on AI-powered sensing and electronic warfare systems.
Cybernetica (Estonia) has built cryptography and cybersecurity products for government systems since the early days of Estonia's digital governance infrastructure.
Browse these profiles, and hundreds more, on our company directory and interactive map. The full list of open roles across European defence tech, including software engineering positions, is updated as new roles come in.
