About this role
Embedded software engineer Hydryx Software Engineering Amsterdam, Netherlands Posted on Nov 3, 2026
Your role
You own the firmware that runs on our devices in the field. You enjoy working across firmware, electronics and wireless communications, and you take features from concept through deployment. Our devices are battery-powered, sit on landfills in all weather, and have to keep measuring and keep connected for years. You make sure they do. You work closely with the CTO and the hardware team to build reliable firmware and with the operations team to track down what goes wrong in the field. You see your code run on real sites, and you fix it when reality disagrees.
Responsibilities
- Independently design, implement, test and deploy C++ firmware features for our STM32-based devices, with a focus on reliability and maintainability
- Own device connectivity over nRF cellular modems, 4G/LTE, MQTT, LoRa and LoRaWAN, including provisioning, power-efficient data transmission and antenna integration
- Integrate sensors, analogue interfaces and actuators, including gas sensors, pressure measurements and valve controls
- Diagnose PCB-level and field failures using logic analysers, oscilloscopes and multimeters
- Investigate intermittent field failures, connectivity recovery and power-management issues on battery-powered devices
- Build automated tests, diagnostic logging and CI/CD pipelines for robust firmware releases, using Git
- Collaborate with the CTO and algorithm team to translate control strategies into firmware
- Work with the operations team to find root causes of failures in challenging industrial environments, internationally Who you are You're a practical, independent embedded engineer who likes it where firmware meets hardware and the real world.
You've seen multiple products and projects succeed and fail, and you know what separates them. - BSc or BEng in computer engineering, electrical engineering or embedd...