Defense Tech Startups

STS Defense Solutions, a defense-focused division of STS Aviation Group, provides aircraft maintenance, modification, and sustainment (MRO) services for military fleets, working directly with prime contractors, OEMs, and government defense agencies. Its work spans flight-line and depot-level maintenance, avionics modernization, structural repair, and mission system integration across platforms in the U.S. and U.K.

2 investors

Subdron provides end-to-end autonomous underwater inspection solutions for critical subsea infrastructure, including port facilities, vessel hulls, and underwater cables. The company uses AI-powered anomaly detection and proprietary navigation technology to enable frequent, cost-efficient inspections that support predictive maintenance and security screening.

2 investors

Surtr develops ParallaxOS, an open operating system for counter-unmanned aerial systems (counter-UAS) and command-and-control operations in Western defense. The platform integrates sensors and effectors from multiple hardware partners without proprietary lock-in, enabling real-time data fusion and AI-driven decision-making for military and defense operators.

2 investors

SWARM Biotactics develops bio-robotic cyborg swarms of living organisms equipped with sensors, edge AI, and secure communications, controlled through its SWARM OS orchestration platform for command, autonomy, and sensor fusion. The systems provide persistent surveillance and intelligence in denied, cluttered, and wide-area environments, targeting defense and security customers first, followed by crisis response and infrastructure.

2 investors

Swarmer builds AI-driven autonomy software for drones, providing autonomous navigation, real-time combat data, and swarm collaboration for military units. Its modular software stack runs on existing hardware and receives encrypted over-the-air updates aligned with frontline tactics.

2 investors

Synteris develops advanced ceramic materials using its proprietary SLRS process, with applications including DoD/DARPA hypersonic flight programs. The company focuses on non-oxide ceramics and the commercialization of early-stage materials science innovations.

2 investors

Tardid is a deep-tech company that builds physics-driven, model-based AI systems for decision intelligence and situational awareness across defense, maritime, transportation, and industrial domains. Founded in 2016, its offerings include AI platforms, autonomous ISR/survey systems, structural integrity assessment tools, and AI-optimized electric marine propulsion.

2 investors

Target Arm integrates robotics, autonomy, and drones with AI enhancements to connect the world in motion. The company serves customers requiring automated movement and intelligence systems across various applications.

2 investors

Tectonic builds and deploys post-quantum cryptography infrastructure, including NIST-aligned encryption, secure network routing that verifies every hop, and encryption key management across devices and users. It targets defense and enterprise systems that must operate across satellite, radio, tactical edge, and standard IT, including denied and disconnected environments.

2 investors

TEKEVER develops AI-driven autonomous systems and unmanned aerial vehicles for defense and security applications. The company also operates digital transformation services and satellite systems divisions, operating across Europe with expansion into France and the UK.

2 investors

Cadrex is a contract manufacturer providing custom fabrication, machining, molding, and assembly services across aerospace & defense, medical, and data center infrastructure sectors. The company operates facilities in the United States and Mexico with capabilities in sheet metal work, CNC machining, plastic injection molding, and system integration.

2 investors

Terminus Industrials is a U.S.-based advanced manufacturer that designs and produces large power transformers with shortened lead times through automated production, supply chain integration, and proprietary software. The company serves domestic utilities and grid infrastructure operators seeking to reduce dependencies on international transformer suppliers and address critical supply-chain vulnerabilities.

2 investors

Terra Labo designs, develops, and operates unmanned aircraft systems (fixed-wing, rotorcraft, and VTOL) along with associated airport infrastructure and management systems. The company also provides surveying, geospatial data collection and analysis services, and aerospace educational materials.

2 investors

Terran Orbital manufactures small satellites and provides end-to-end satellite services including design, production, launch planning, mission operations, and in-orbit support. It serves military, civil, and commercial customers, primarily in the United States and allied aerospace and defense sectors.

2 investors

Terrion is building an integrated domestic supply chain for synthetic graphite in the United States, covering feedstock through finished material for defense, energy, and industrial applications. The company aims to reduce U.S. reliance on imported synthetic graphite used in lithium-ion batteries, nuclear reactor cores, and hypersonic and industrial systems.

2 investors

The Fourth Law is a Ukrainian defense technology company that builds AI autonomy systems for FPV and autonomous drones, including terminal-guidance modules (TFL-1) and the Zerov-8 autonomous interceptor for countering enemy UAVs. Its products are sold to military units, government buyers, and drone manufacturers to support Ukraine's frontline defense.

2 investors

ThermAvant Technologies designs and manufactures oscillating heat pipe (OHP) thermal management solutions and thermal straps for aero-defense and high-technology customers, including government and commercial spaceflight applications. It is an AS9100/ISO9001 certified vertically integrated manufacturer serving private and government aerospace and defense clients.

2 investors

Thor Dynamics develops autonomous drone defense systems to protect critical infrastructure and high-value targets from aerial threats. The company aims to scale affordable drone interception technology for defense and security applications.

2 investors

Torev Motors develops high-performance electric motors that do not rely on rare-earth materials, using alternative electromagnetic architectures aimed at manufacturability and scale. The company targets automotive OEMs and defense/government customers seeking supply chain resilience and cost stability.

2 investors

Trase builds AI systems with built-in governance and auditability for organizations in high-stakes domains such as defense, healthcare, and critical infrastructure. The platform is designed to be secure by design and engineered for reliable performance in mission-critical applications.

2 investors

Allen Steam Turbines is a legacy brand of Trillium Flow Technologies that provides maintenance, repair, and custom engineering of steam turbines for industrial and defense applications across Europe. The company serves government and private sector customers including the UK's Ministry of Defense and Royal Navy.

2 investors

TTTECH develops safety-critical embedded network and control systems for aerospace, industrial automation, energy, and mobile machinery applications. The company provides deterministic networking platforms, real-time control systems, and industrial IoT solutions designed for high-reliability, fault-tolerant operation across aviation, space, energy transition, and manufacturing sectors.

2 investors

Ultraview builds an aircraft inspection platform combining autonomous drones and AI-powered handheld devices that capture exterior imagery via 4K cameras and 3D LiDAR, using computer vision to detect and measure surface damage such as dents, cracks, and corrosion. It serves airline tech ops, military maintenance, and MRO facilities with scheduling, anomaly review, and reporting through a single app.

2 investors

UniqueSec develops testing and validation systems for automotive radars and driver assistance systems (ADAS). The company provides in-lab solutions for autonomous vehicle verification used by automakers and Tier-1/2 suppliers.

2 investors