Senior Embedded Software Engineer

Embedded Firmware Engineer / Embedded Software Architect Precision Agriculture & Horticulture Hardware · SmartSpray Technologies We're looking for an embedded firmware engineer to serve as software architect and extend into low-level interfaces across our hardware platform. You'll work on FreeRTOS and bare-metal design, lead our embedded software team across ARM Cortex-M, PSoC, and 16-bit MSP430 targets, and integrate sensors, communication buses, and actuation drivers into a tightly coupled real-time system. Strong communication is essential. What You'll Work On CAN FD bus architecture — driver layer, message schemas across controllers/rovers/sensors, bus-level debugging with scopes and analyzers. External interfaces — SPI, I2C, UART, and GPIO integration with GNSS, cellular, and sub-GHz radios. ADC and analog acquisition — pressure, current sense, and other analog sensors with attention to noise, sample timing, and calibration. RF subsystems — sub-GHz P2P link tuning, antenna characterization, packet protocol work. DSP and FFT — signal processing for ultrasonic flow and radar-based sensing, including filtering and spectral analysis. PWM drivers — solenoid valve control for nozzle-level actuation, including timing, dithering, and current regulation. Required Experience 5+ years of professional embedded C on bare-metal or RTOS targets Embedded software architecture experience Hands-on with ARM Cortex-M and/or PSoC families CAN FD driver-level work and field debugging Strong ADC fundamentals: sampling theory, anti-aliasing, reference design, noise mitigation At least one RF technology (sub-GHz, BLE, cellular) at firmware integration level DSP fundamentals — FFT, digital filtering, fixed-point math PWM peripheral configuration and motor/solenoid driver experience Proficient with oscilloscopes, logic analyzers, and protocol decoders Git, code review, and clean documentation habits Nice to Have GNSS/RTK experience Ultrasonic flow sensing or radar signal processing Agricultural, automotive, or industrial controls background Production firmware experience: OTA, store-and-forward, degraded-mode operation FCC compliance and EMC pre-scan familiarity