Praesidium Defence OÜ
An Estonian defence-technology company building the trusted-autonomy software layer for the uncrewed systems of European and Allied defence.
Make autonomy trustworthy enough to field.
Uncrewed systems are multiplying across the modern battlespace. What holds them back is not mobility, it is trust. Commanders need autonomy they can supervise, explain and audit.
Praesidium Defence builds that trust layer. PERSEUS turns a platform’s raw sensing into doctrine-driven, explainable, advisory reasoning, keeping the human in command and leaving a complete, replayable record of every decision. We build to be inspected, and we state our maturity honestly.
Principles built into the product.
The same values that shape PERSEUS shape how we work with defence customers and evaluators.
Human-supervised
Autonomy that advises, never overrides. The operator and the platform stay in command, by architecture, not by policy.
Inspectable
Deterministic, explainable, replayable. If a reviewer cannot verify a claim, we treat it as not yet proven.
Honest about maturity
We separate what is proven today from what the pilot phase delivers, clearly, in writing, in every brief.
Estonian roots, Allied alignment.
Estonia is one of Europe’s most advanced defence-technology ecosystems and a frontline contributor to NATO’s eastern flank. PERSEUS is developed in that context, for the operational realities of contested, degraded environments.
- Headquartered at Tehnopol Science & Business Park in Tallinn, within Estonia’s defence-technology ecosystem.
- Positioned for NATO DIANA 2027 Multidomain Autonomy of Uncrewed Systems.
- Standards-aligned to SAE AS-4 JAUS and STANAG interoperability semantics.
- Built for partnership with host-UGV manufacturers and integrators.
“PERSEUS is presented as a pilot-enabling interoperability proof of concept, to validate architecture, host-platform interoperability, explainable reasoning and end-to-end decision traceability ahead of integration onto a host UGV platform.”
Partners & evaluators.
We engage three audiences, each with material tailored to how they assess a system.
Defence procurement & evaluation
Software requirements, interface control, safety-case scope and a verifiable evidence package for structured assessment.
Host-UGV manufacturers
A documented adapter boundary and host emulator for integrating PERSEUS onto an existing platform without exposing proprietary internals.
NATO & EU innovation
DIANA-aligned positioning, a staged accelerator workplan, and clearly scoped pilot-phase deliverables.
Work with Praesidium Defence.
Whether you evaluate, procure, or build platforms, we would like to brief you on PERSEUS.
