Synstack Technologies

We are looking for a Sensor Validation & Captouch Engineer to join the hardware team. This role is responsible for end-to-end sensor validation, capacitive touch (captouch) modelling, and testing on next-generation wearable platforms. You will work closely with cross-functional teams including manufacturing, firmware, systems integration, and product design engineering to ensure sensor subsystems meet performance, reliability, and production-readiness requirements. Key Responsibilities Sensor Validation Develop and execute validation test plans for sensors integrated into wearable hardware (e.g., proximity, ambient light, IMU, captouch) Prototyping of new hardware/sensors. Characterize sensor performance across environmental conditions (temperature, humidity, mechanical stress) Analyze data sensor data to identify discrepancies and root-cause failures Define pass/fail criteria and contribute to sensor specifications Captouch Modelling & Testing Build and maintain capacitive touch sensor models (FEM/analytical) to predict performance across design variations Conduct captouch sensitivity, linearity, and noise characterization Collaborate with firmware teams for sensor development Manufacturing Interface Previous experience in a fast-paced hardware development environment (EVT/DVT/PVT cycles) - must have Partner with manufacturing and NPI (New Product Introduction) teams to define sensor test procedures for production lines Support manufacturing yield analysis and troubleshoot sensor-related production issues Develop and document sensor calibration procedures for factory deployment Communicate with manufacturing teams in China to troubleshoot sensor-related test fixture bring up. Cross-Functional Collaboration Work with Product Design Engineers, Systems Integration Engineers, and Electrical Engineers Coordinate with firmware/software teams on sensor driver integration and tuning Provide sensor performance data and recommendations to support system-level trade-off decisions Contribute to design reviews and risk assessments Required Qualifications B.S. or M.S. in Electrical Engineering, Mechanical Engineering, Physics, or related field 3+ years of experience in sensor characterization, validation, or test development Experience with FEM simulation tools COMSOL and/or Ansys (Mechanical & Electronics Desktop) Proficiency with lab equipment (oscilloscopes, LCR meters, environmental chambers, data acquisition systems) Experience with data analysis tools (Python, MATLAB, or similar) Strong understanding of sensor physics (capacitive, optical, inertial) Experience interfacing with manufacturing or NPI teams Preferred Skill 5+ yrs of experience. Experience in capacitance extraction and electrode simulation Familiarity with consumer electronics or wearable device development Experience with embedded systems and sensor firmware debugging Knowledge of touch controller ICs (CSD/CSX sensing methods) and their configuration/tuning Strong communication skills for cross-site and cross-functional collaboration