Firmware Engineer

About Sonicu

Sonicu builds wireless monitoring solutions that protect vaccines, labs, and other critical environments. Our cloud platform, SoniCloud, aggregates real-time sensor data and automates alarms and compliance reporting across healthcare and life sciences. We support multiple connectivity paths (Wi-Fi, cellular, Ethernet) with built-in data redundancy, and operate an in-house calibration lab for NIST-traceable sensors.

What youll do

• Design, implement, and maintain embedded firmware for low-power wireless devices using C / C++ and FreeRTOS
• Develop and optimize drivers and board-support code for peripherals : IC / SPI / UART / ADC / DAC, sensors, displays, external radios (LoRa, cellular, NFC) and various forms of external memory
• Build reliable wireless features : LoRaWAN class A / C, BLE (GATT), Wi-Fi station / AP, provisioning, roaming, and power-aware duty cycling
• Implement secure bootloaders and OTA update flows; add logging / diagnostics and fail-safe rollback
• Collaborate with hardware, cloud, and mobile teams to ship features end-to-end; participate in code reviews and CI
• Support bring-up, DVT, and manufacturing test scripts; partner with our ISO 17025 lab on calibration / workflows and field reliability
• Profile performance, battery life, and RF behavior; instrument telemetry for real-world observability

What youll bring (required)

Nice to have