What you will do- Rapid prototyping: turn ideas into working hardware quickly. Build breadboard and dev-kit proofs of concept, spin quick-turn PCBs, hand-assemble and rework boards, and iterate from bench results in days, not months
- Analog front end: design high-sensitivity, low-noise, instrumentation-level signal chains for chemical sensor arrays: excitation, multiplexing, amplification, filtering, and high-resolution ADC conversion
- Noise and precision: build PSpice models of the signal chain and run noise budgets, error and drift analysis, and tolerance studies; manage grounding, shielding, guarding, layout, and thermal effects to reach the sensitivity the sensor needs
- Digital and MCU design: design multi-MCU boards (STM32, MSP430, ESP32 families) with external memory and storage, displays and touch, audio, wireless, and USB
- Mixed-signal and power: partition analog and digital domains; design battery, charging, BMS and fuel-gauge circuits, low-noise regulation, and drivers for pumps, valves, and other actuators
- Bring-up and validation: bring up new boards, write test plans, characterize sensor and front-end performance, and debug down to the component
- Firmware: write and maintain drivers, bring-up and production firmware across STM32 (FreeRTOS), MSP430 (bare-metal), and ESP32 (ESP-IDF), including inter-processor communication, sensor acquisition, power management, and wireless connectivity
- Path to production: schematic capture and PCB layout, BOM and component selection, DFM/DFT, and work with contract manufacturers and EMC/safety test labs (IEC 60601-1, IEC 60601-1-2)
- Work across teams: partner with software and cloud on device interfaces, with the sensor team on characterization, and with mechanical on integration and pneumatics
- Documentation: write and maintain hardware design documentation and risk analyses (dFMEA) for an ISO 13485 / ISO 14971 design-control process
What you9ll work with- Sensing: chemical sensor arrays, plus flow and environmental sensing
- Analog front end: MSP430 ultra-low-power MCU for multi-channel precision acquisition and battery management
- Main unit: STM32 (ARM Cortex-M) with external memory and storage, touch display, and audio
- Connectivity: ESP32 for Wi-Fi and BLE
- Firmware: C/C++, FreeRTOS, STM32Cube, ESP-IDF, and bare-metal MSP430
- Process: Git, Jira/Confluence, and a QMS-based design-control process
- Design tools: KiCad, PSpice, LTspice
What you need- 7+ years of professional electronics design and embedded firmware experience, with at least one product taken from prototype to production
- A strong record of rapid prototyping: you build, measure, and iterate quickly, and you9re comfortable with hand assembly, rework, and quick-turn PCB fabrication
- Proven analog design for high-sensitivity, low-noise, instrumentation-grade measurement: precision op-amps and instrumentation amplifiers, transimpedance or bridge circuits, low-noise references, filtering, and high-resolution (24-bit sigma-delta) ADCs
- Solid understanding of noise sources (thermal, 1/f, shot, EMI) and how to measure and reduce them
- Digital design experience with STM32 (ARM Cortex-M), MSP430, and ESP32 MCUs, including high-speed memory interfaces, SPI, I2C, UART, I2S, SDIO, and USB
- Mixed-signal PCB layout skills: grounding, guarding, stack-up, and signal and power integrity
- Low-noise power design and battery-powered systems
- Expert with lab equipment: oscilloscope, spectrum or FFT analyzer, precision DMM and SMU, LCR meter, logic analyzer
- Fluent in KiCad for schematic capture and multi-layer PCB layout, plus circuit modeling and simulation in PSpice (LTspice a plus): analog front-end, noise, and tolerance/Monte Carlo analysis
- Clear communicator with colleagues from different technical backgrounds (firmware, sensor, product, AI, QA)
- Bachelor9s degree in Electrical or Computer Engineering, or equivalent practical experience
FirmwareYou9ll write the firmware for the boards you design, so we need real depth here too:
- Strong embedded C/C++ on STM32 (STM32Cube/HAL), ESP32 (ESP-IDF), and MSP430
- FreeRTOS and bare-metal development: peripheral drivers, ADC/DMA acquisition, interrupts, timers, and low-power modes
- Writing bring-up and test firmware yourself, and debugging with JTAG/SWD
- Inter-processor communication (UART, SPI) and wireless connectivity on ESP32 (Wi-Fi, BLE, MQTT)
- Bootloaders, OTA updates, and secure boot
- Python for test automation, data capture, and analysis
Nice to have experience- Chemical, gas, or biomedical sensor interfaces
- Medical device experience: IEC 60601-1, IEC 60601-1-2 (EMC), ISO 13485, ISO 14971
- Pneumatic or fluidic systems and actuator drive circuits
- RF layout and wireless certification
- Low-volume manufacturing, test fixture design, and production test
