AR/VR Sensor Characterization Engineer

Pairwise; Redmond (WA); On-site; USD 110,000 - 170,000; Full time

Benefits offered by this job

Premium medical insurance

Dental insurance

Vision insurance

FSA

Life insurance

Disability insurance

401k with company match

Generous PTO

Job summary

Pairwise seeks a hands-on Sensor Characterization Engineer to own benchtop characterization of sensors powering AR/VR wearable hardware. You will define test methods, run measurements, and turn data into calibration parameters and reports for hardware and firmware teams.

Responsibilities include planning characterization across modalities (IMUs, magnetometers, optical biosensors), applying Allan variance and rate-table methods, and automating analyses with MATLAB and Python to ensure accuracy

Qualifications

• Bachelor's degree in Electrical Engineering, Physics, Mechanical Engineering, or related field.
• 3+ years of hands-on sensor characterization or metrology experience.
• Proficiency in MATLAB and Python for measurement automation, data analysis, and reporting.
• Solid understanding of sensor error sources and metrics (bias, drift, noise, sensitivity, linearity).
• Characterization experience with inertial or magnetic sensors, including noise and stability analysis.
• Hands-on benchtop testing experience with lab instrumentation.

Responsibilities

• Define and execute benchtop characterization plans across sensing modalities, including IMUs, magnetometers, PPG and proximity sensors.
• Characterize performance across the operating range: bias, drift, noise, sensitivity, scale factor, cross-axis coupling, linearity, and temperature dependence.
• Apply modality-specific methods such as Allan variance and rate-table testing for inertial sensors, hard and soft iron characterization for magnetometers, and SNR, ambient rejection, and contact variation for optical biosensors.
• Develop and validate sensor calibration and compensation routines, and assess their performance across parts and conditions.
• Characterize sensor coexistence and interference with other active device subsystems, such as audio.
• Automate measurement, data processing, and analysis using MATLAB and Python, with a focus on accuracy and repeatability.
• Analyze results and produce clear characterization reports that feed back into hardware and firmware design decisions.
• Collaborate with hardware, firmware, and systems engineers to refine test methods and interpret results.

Skills

MATLAB scripting

Python scripting

Sensor characterization

Measurement automation

Data analysis

Lab instrumentation

Education

Bachelor's degree in Electrical Engineering or related field

Tools

MATLAB

Python

Job description

Pairwise seeks a hands-on Sensor Characterization Engineer to own benchtop characterization of sensors powering AR/VR wearable hardware. You will define test methods, run measurements, and turn data into calibration parameters and reports for hardware and firmware teams.

Responsibilities include planning characterization across modalities (IMUs, magnetometers, optical biosensors), applying Allan variance and rate-table methods, and automating analyses with MATLAB and Python to ensure accuracy