NOCTUA-TECH d. o. o. is a Rijeka-based Croatian technology engineering firm delivering embedded firmware, industrial control software, IoT platforms, backend systems, automation pipelines and technical consulting for manufacturing, maritime, energy and tech startups across Croatia, the Adriatic region and EU markets.
Our registered office is located at Vitomira Sirole Paje 14, Rijeka, HR 51000, Croatia. We operate out of the Kvarner region, serving Rijeka, Opatija, Krk, Split, Zagreb and industrial partners along the Croatian coast and inland. Our engineering team specializes in cross-border EU technical projects, adhering to CE standards, industrial safety requirements and GDPR data handling rules for connected devices and cloud platforms.
Noctua‑Tech was founded to bring high-quality embedded and industrial software engineering to regional businesses that previously relied on overseas contractors or large, expensive system integrators. We focus on long-term maintainability, clear documentation, remote support and local on-site commissioning where required. Our projects span maritime monitoring sensors, factory automation controllers, renewable energy telemetry, custom IoT gateways and scalable backend data platforms.
To deliver robust, secure and well-documented technical systems for industrial and IoT customers across the Adriatic and European Union. We combine local accessibility with international engineering standards, helping small and mid-sized manufacturers and innovators bring connected products and automation systems to market reliably.
Years Industrial Engineering
Delivered Technical Systems
MCU and embedded Linux firmware, sensor acquisition, low-power management, LoRa / NB-IoT / cellular communication, OTA updates and fault logging for industrial edge devices.
SCADA connection scripts, Modbus / MQTT bridges, data logging, HMI helper tools, custom gateways for legacy machinery and production line monitoring systems.
Secure ingestion APIs, InfluxDB / TimescaleDB storage, device authentication, fleet management, alerting rules and customer-facing telemetry dashboards.
Docker containerization, self-hosted or EU-cloud deployments, monitoring, backups, access control and GDPR-aligned data processing workflows.
Firmware and backend security reviews, memory safety checks, failure-mode analysis, performance profiling and refactoring for long-lifetime industrial hardware.
Product requirement workshops, technical scoping, on-site startup and testing, operator training, maintenance documentation and CE technical file support.
Vessel sensors and coastal monitoring
Factory process monitoring and control
Solar, wind and hydro telemetry
Water, air and climate sensor networks
MVP embedded product development
Asset tracking and condition monitoring
Pump and water network telemetry
HVAC, energy and occupancy control
Low-power buoy sensor nodes measuring water temperature, salinity and turbidity, LoRaWAN transmission, secure EU-hosted backend, map dashboard and automated report generation for coastal research partners.
Modbus and PLC data acquisition gateways deployed across factory cells, local buffering for internet outages, MQTT broker, time-series database, OEE dashboards and role-based operator access.
Edge firmware for inverter and weather sensors, cellular OTA updates, fleet management backend, anomaly alerting, energy yield analytics and GDPR-compliant data retention controls.
Business Hours: Monday – Friday, 08:00 – 17:00 CET. On-site technical visits, factory commissioning and project kickoffs are scheduled by prior arrangement. We support clients across Croatia and the wider European Union, working to EU industrial, safety and data protection regulations.