Senior Sensors Engineer

Senior Sensors Engineer (Contract)

Company Overview

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.

Position Summary

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.

Key Requirements

• 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.

Preferred Background

• Sensor Systems Architect experience.
• 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.

Location: Palo Alto, CA (Hybrid Schedule, 2 days/week in office)
Duration: 12-month contract with extension/conversion possibilities
Pay Rate Range: $75 to $95/h (DOE)