Requirements:

• At least 1 year of professional experience in embedded software or firmware development
• Strong experience with C/C++ and production firmware
• Experience with microcontrollers such as ARM Cortex-M and ESP32 / ESP-IDF
• Experience with FreeRTOS or a similar RTOS
• Experience working with industrial sensors, including temperature, pressure, conductivity, level and battery monitoring
• Knowledge of ADC, I2C, SPI, UART and digital I/O
• Experience with Wi-Fi, TCP/IP, MQTT and Bluetooth / BLE
• Experience using debugging tools such as JTAG, oscilloscopes, logic analyzers and multimeters
• Familiarity with STM32CubeMX, Python and Git
• Knowledge of TLS, X.509 certificates and AWS IoT Core
• Understanding of secure device provisioning, persistent storage, watchdogs, recovery mechanisms and field diagnostics
• Fluent English is mandatory
• Category B driving licence is mandatory
• Willingness to travel to clients, mainly within Europe
• Degree or equivalent background in Computer Engineering, Automation, Electronics or a related field

Your responsibilities:
You will be involved in the complete lifecycle of our connected devices, including:

• Sensor acquisition, calibration and validation
• Secure device provisioning and certificate management
• MQTT telemetry and device communication
• Persistent configuration and credential storage
• Remote diagnostics and fault analysis
• Firmware stability, recovery and maintainability
• Troubleshooting across firmware, hardware, connectivity and cloud systems
• End-to-end testing of connected devices
• Supporting commissioning and field validation at client locations

This is not an Arduino or prototyping-only position. We are looking for someone who is comfortable working with production IoT devices, taking ownership of their functionality and diagnosing issues across hardware, firmware, connectivity and cloud environments.
Additional advantages:

• Experience with OTA updates, secure boot, signed firmware, secure elements, industrial interfaces such as 4–20 mA / 0–10 V, cybersecurity-aware product development, manufacturing, commissioning or field deployment of connected devices is a strong advantage.
• Knowledge of an additional foreign language is also an advantage.

Benefits:

• Competitive compensation based on experience and technical expertise
• Opportunity to work on real-world industrial IoT products, from development to field deployment
• High level of technical ownership and involvement in product development
• Professional development and continuous learning opportunities
• International projects and collaboration with clients across Europe
• Hands-on experience with embedded systems, sensors, connectivity and cloud technologies
• Opportunities for travel and field deployment across Europe
• Additional benefits to be discussed based on experience and role

We are looking for an Embedded IoT / Firmware Engineer to join our team and contribute to the development of our connected products.
This is a hands-on engineering role covering embedded firmware, sensors, connectivity, secure device provisioning, cloud integration and end-to-end product validation. You will work with real production IoT devices and be involved in both development and field deployment.
Checkology is developing industrial IoT solutions for the beverage industry, combining smart hardware, sensor technology and cloud-based data management to help breweries and beverage producers monitor, verify and improve critical production and cleaning processes.