Surtr Defense Systems

Surtr Defense Systems builds ParallaxOS, an open counter-UAS operating system for sensor fusion, C2 and human-authorized effector tasking. The San Francisco company raised a $4.8M seed in July 2026 and has tested acoustic and visual FPV-drone tracking with military operators in Ukraine.

Market context

Robotic defence systems only become useful at scale when sensors, unmanned systems, operators, and decision tools can work together. Surtr matters as a software layer focused on interoperability rather than a single platform.

Facts

Funding

Investors

Partner-neutral defence C2 and data fusion

Surtr is building a defence software layer for integrating Western hardware, live operations, and AI decision support.

Events

Team

Context tags

Surtr Defense Systems canonical Korthos profile