Marduk Technologies OÜ is an Estonian defence technology company based in Tallinn, registered in the Estonian Business Register with registry code 14099539 and founded in August 2016. It develops passive electro-optical systems that detect, classify and target small drones. Its systems use wide-angle optics, stabilised gimbals and on-board machine-learning classifiers rather than radar or RF emissions, which makes the sensors harder to detect than radar. The flagship product is the Marduk Shark, a counter-UAS sensor platform of about 75 kg that uses patent-pending AI and machine-learning algorithms and can be combined with radar, RF detectors, jammers and lasers as part of a modular multi-sensor setup. A smaller product, the Piraya, is also offered.

Marduk's systems have been tested and deployed in several settings. The company was one of three winners of a Frontex contest on detecting low-flying objects in January 2024, receiving a prize of €210,000. It took part in the Estonian Defence Forces' Siil 2025 live-fire exercise in May 2025 and in the GUTE counter-UAS trials on Gotland, Sweden in 2025. Its systems have been used at the NATO air base in Ämari. In 2025 it signed a memorandum of understanding with Hanwha Aerospace at ADEX 2025 and in 2024 signed a cooperation agreement with Saab. In 2024 it also agreed to collaborate with Robin Radar on a combined counter-drone platform, and it developed an autonomous mobile counter-UAS system with Milrem Robotics that pairs the Shark with the THeMIS unmanned ground vehicle.

The company's customers include defence forces and government bodies, and it has also sold systems to Middle Eastern buyers. Marduk has received public funding, including an R&D grant of €500,000 from Enterprise Estonia financed by the European Regional Development Fund, several EU Horizon-funded projects, and selection for the Estonian Ministry of Defence's 2025 Defence Industry Development Program. In 2026 it reported revenue growth and an operating loss turned into profit, and it was recruiting software developers in Tallinn as it moved from development into production scaling.