William McNulty

Marine building in Ukraine

📍 United States🔄 Updated September 2026💼 10 investments📅 2 years investing🗓 Last invested Dec 2025
Operator-angel🌍 United StatesInvested this year
10
Total investments
5
Early stage
3
Mid stage
0
Late stage
2y
Years active

Portfolio

10 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Investor
Dec 2025
Tiberius Aerospace is a modern defense technology company built to empower the UK, US and their global allies with continuously evolving defense systems that provide protection through increased deterrence and accuracy at cost-efficient scale.
Investor
Oct 2025
Thermopylae is solving the most critical cost asymmetry problem in air defense. We pioneer novel, low-cost primitives and engineer our architectures around them to deliver affordable solutions with dramatically greater capability per dollar than any existing systems today - protecting the future of interplanetary civilization.
Investor
Sep 2025
Himera creates tactical communication systems for global defense forces, utilizing our unique access to an active modern battlefield. Our products were developed to meet the Ukrainian defense forces’ need for scalable and secure communication solutions for the most complex electronic environment. Thousands of our handsets are already being used with almost every type of combat unit. Because of this, we can receive active feedback on various use cases for our system and make rapid iterations to our product.
Investor
Aug 2025
Autonomous underwater vehicles.
Investor
Aug 2025
Our mission is to make UAV delivery universally accessible due to ease and flexibility. We design, produce, and service cargo UAV logistics for environmental, medical, urban, energy problem-solving.
Investor
Jul 2025
Turning the unmanned systems of today into the weapons of tomorrow.
Investor
Nov 2024
We are Frontline Robotics, a Ukrainian defence technology company that develops and manufactures robotic systems for Ukraines security and defence forces. Our mission is to create an integrated robotic ecosystem for defence. As battlefield conditions evolve, technology must evolve with them. Robotics enable operations to be carried out more safely, minimizing risks to human life. Our solutions: Linza – multiuse logistical drone, equipped with a gyro-stabilised camera with digital and hybrid zoom and can carry up to 2 kg over a distance of 10 km. Zoom – EW-resistant reconnaissance Drone, can stay airborne for up to 40 minutes, with a tactical range of 12 km. Buria – an autonomous remote weapon station designed for accurate, stand‑off engagement using the Mk 19 / RDS40 grenade launchers or the Browning M2. Frontline Robotics career: https://cutt.ly/WtfO1m3c
Investor
Sep 2024
Guardian RF Corporation builds small, passive radiofrequency systems that detect, classify, and attribute drone and their operators activity in real time. Our technology provides persistent airspace awareness for defense, public safety, and critical infrastructure operators operating in complex and congested environments. Guardian RF sensors are low size, weight, and power, and suited deployment at fixed sites or as mobile kits without interfering with existing systems or needing infrastructure buildout. By detecting both compliant and non-compliant unmanned aircraft and identifying operator activity, the system supports longitudinal pattern of life analysis across sites and regions. Our systems are fielded with U.S. government customers, critical infrastructure operators, and law enforcement agencies to support aviation safety, base and site security, wildfire and disaster response, and protection of sensitive assets. Guardian RF delivers actionable drone intelligence through hardware, data services, and secure analytic platforms designed for operational use.
Investor
Sep 2024
Swarmer develops software systems that allow unmanned vehicles to act autonomously and work together in large teams. Its systems are centered on ethical AI and require humans to make all life-or-death decisions, while also allowing computers to do what they do best—processing large quantities of information and reacting to the rapidly changing environment in split seconds. Swarmer has successfully demonstrated swarms of up to 25 drones working together in GNSS-denied environments. In the near future, it plans to demonstrate combined-arms operations involving 100+ drones of various kinds, working in concert to seamlessly integrate UAS, USV, UGV, and stationary launchers into a single swarm that functions as one unit. Beyond defense applications, Swarmer’s hardware-agnostic platform positions the company to transform civilian markets from precision agriculture and emergency response to infrastructure inspections and environmental monitoring.
Investor
Feb 2024
At Buntar Aerospace, we develop complex solutions for UAV navigation and control in various environments.
Experience · 15 entries
All (15)
Investments (10)
Founder (5)
2025
Investor
Dec 2025
Tiberius Aerospace is a modern defense technology company built to empower the UK, US and their global allies with continuously evolving defense systems that provide protection through increased deterrence and accuracy at cost-efficient scale.
Investor
Oct 2025
Thermopylae is solving the most critical cost asymmetry problem in air defense. We pioneer novel, low-cost primitives and engineer our architectures around them to deliver affordable solutions with dramatically greater capability per dollar than any existing systems today - protecting the future of interplanetary civilization.
Investor
Sep 2025
Himera creates tactical communication systems for global defense forces, utilizing our unique access to an active modern battlefield. Our products were developed to meet the Ukrainian defense forces’ need for scalable and secure communication solutions for the most complex electronic environment. Thousands of our handsets are already being used with almost every type of combat unit. Because of this, we can receive active feedback on various use cases for our system and make rapid iterations to our product.
Investor
Aug 2025
Autonomous underwater vehicles.
Investor
Aug 2025
Our mission is to make UAV delivery universally accessible due to ease and flexibility. We design, produce, and service cargo UAV logistics for environmental, medical, urban, energy problem-solving.
Show all 15 entries ↓
Investment activity
2024–2025 · 10 investments
2024420256
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