Senior Sensors Engineer

Sabi is developing a next-generation AI wearable that combines ultra‑high‑density neural sensing with a Brain Foundation Model to decode neural signals and convert thought into text without surgery. The company is focused on advancing noninvasive brain‑computer interface (BCI) technology through an EEG‑powered wearable platform.

This person will own the end‑to‑end non‑EEG sensor architecture, hardware, and algorithms for a sensor‑rich wearable platform. The primary focus is PPG sensing systems, including optical hardware, heart rate, HRV algorithms, and sensor fusion across multiple sensing modalities. This is a highly visible leadership role reporting into the Head of Hardware and working closely with the CEO and CTO.

• 10+ years of sensor or wearable hardware development experience.
• Deep expertise with PPG sensor systems (highest‑priority skill set).
• Experience owning a sensing system from architecture through product launch.
• Strong analog front‑end design experience.
• Experience with sensor selection, validation, calibration, characterization, and BOM ownership.
• Experience with heart rate and HRV algorithms in real‑world wearable environments.
• Experience integrating multiple sensor modalities including optical, inertial, temperature, and environmental sensing.
• Strong cross‑functional experience partnering with EE, Firmware, Mechanical Engineering, and Product Design teams.
• Comfortable working hands‑on in the lab and collaborating with overseas CMs.

• SpO2, ECG, EDA, EMG, or additional health‑sensing experience.
• Sensor fusion and multimodal sensing expertise.
• Human physiology or biomechanics knowledge.
• Consumer wearable startup or founding engineer experience.
• Experience leading sensor teams and subsystem development.

Palo Alto, CA (Hybrid Schedule, 2 days/week in office)

12‑month contract with extension/conversion possibilities