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SesameSesameSan Francisco, CA

Test Engineer, Manufacturing

Develops and optimizes manufacturing test strategies, fixtures, and software for wearable devices, covering audio, camera, RF, sensors, and battery testing. Collaborates with contract manufacturers and design teams to ensure quality from NPI to mass production.

175k – 280k/yr
On-siteHardware Engineering

About the role

Responsibilities

  • Architect and implement comprehensive manufacturing test strategies for new product introductions (NPIs), covering functional, parametric, and in-circuit testing for complex wearable devices.
  • Design, develop, and qualify test fixtures, equipment, and software for PCBA-level tests to final product assembly.
  • Develop and optimize test solutions for:
    • Audio Testing: Acoustic test methodologies for speakers, microphones.
    • Camera & Imaging Testing: Calibration and functional tests for cameras and optical systems.
    • RF & Wireless: Testing for Bluetooth, Wi-Fi, and RF protocols.
    • Sensors: Calibration for accelerometers, gyroscopes, biometric sensors.
  • Utilize data analysis tools to monitor test yields, identify root causes, and drive continuous improvement in test coverage, cycle time, and efficiency.
  • Act as primary technical interface with contract manufacturers (CMs): train teams, troubleshoot on factory floor, ensure specification adherence.
  • Partner with design teams for Design for Testability (DFT) to enhance testability, manufacturability, and reliability.
  • Create and maintain test specifications, process instructions, and engineering change notices (ECNs).
  • Lead and mentor junior engineers, manage third-party resources.

Required Qualifications

  • Deep expertise in consumer electronics testing: PCBA, FATP, system-level.
  • Experience with specialized testing:
    • Audio: Audio Precision, SoundCheck.
    • Camera: Optical test benches, image quality analysis, calibration.
    • RF: Spectrum analyzers, network analyzers, wireless protocols.
    • Battery: Charge/discharge cycling, impedance spectroscopy, safety testing.
  • Extensive work with large-scale CMs, including overseas travel.
  • Strong knowledge of statistical process control (SPC), GR&R, data analysis.
  • Excellent problem-solving, communication, interpersonal skills.

Preferred Qualifications

  • 10+ years in manufacturing test engineering for consumer electronics.
  • Experience with wearables.
  • Proficiency in programming for test automation (Python, C#, LabVIEW).
  • Experience with eye tracking and vision testing/calibration.
  • Bachelor's or Master's in Electrical Engineering, Mechanical Engineering, or related.

Skills

Audio PrecisionSoundcheckPythonC#LabviewSpectrum AnalyzersNetwork AnalyzersStatistical Process ControlGr&ROptical Test Benches
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