Hardware Test Engineer

Role Overview:

We are hiring a Hardware Test Engineer to own and drive end-to-end hardware testing, validation, and reliability for next-generation smart wearables, including smart rings, watches, and health trackers.

This role focuses on ensuring electrical correctness, sensor accuracy, wireless performance, low-power behavior, manufacturability, and field reliability of highly miniaturized wearable hardware systems from prototype through mass production.

The ideal candidate has deep hands-on experience with hardware bring-up, debugging, automated test development, and production QA in compact, low-power consumer or health devices.

• Lead board bring-up and electrical validation of new hardware designs (MCU, sensors, power, RF).
• Debug complex hardware issues involving analog front ends, power integrity, sensor noise, and wireless performance.
• Use lab tools (oscilloscope, logic analyzer, spectrum analyzer, network analyzer) for root-cause analysis.

• Validate and characterize optical and bio-sensing systems including:
• PPG, ECG, SpO₂, temperature, proximity, ambient light, skin-contact sensors.
• Evaluate signal quality, noise, drift, motion artifacts, and environmental sensitivity.
• Work closely with firmware and algorithms teams to ensure sensor data integrity and repeatability.

• Measure and optimize current consumption across all operating modes (active, sleep, deep sleep).
• Validate battery life claims, charging behavior, fuel gauge accuracy, and power sequencing.
• Perform power profiling and leakage analysis for ultra-low-power systems.

• Test and validate Bluetooth Low Energy (BLE) performance:
• TX/RX power, sensitivity, packet error rate, coexistence.
• Support antenna tuning, RF matching, and enclosure impact analysis.
• Prepare hardware for Bluetooth SIG and regulatory certification testing.

• Define and execute environmental, mechanical, and stress tests:
• Thermal cycling, humidity, ESD, drop, vibration, sweat exposure.
• Support EMI/EMC pre-compliance testing and issue mitigation.
• Ensure readiness for regulatory and certification requirements.

• Design and guide automated hardware test setups for factory production.
• Develop test plans, test fixtures, and test coverage strategies for manufacturing QA.
• Analyze production failures, yield loss, and RMA data; drive corrective actions.
• Work closely with manufacturing partners to improve yield, consistency, and reliability.

• Own hardware validation plans (HVPs), test reports, and qualification documents.
• Define test criteria, pass/fail thresholds, and release readiness.
• Contribute to building scalable hardware testing frameworks for future products.

• Bachelor’s or Master’s degree in Electrical / Electronics Engineering or related fields.
• 3–6 years of hands-on experience in hardware testing, validation, or bring-up.
• Strong experience with:
• Analog and mixed-signal circuits
• Optical and bio-sensor validation
• Low-power embedded hardware testing
• BLE / RF validation and debugging
• Power and battery system testing
• Deep familiarity with lab instrumentation and measurement techniques.
• Proven experience supporting hardware transition from prototype to mass production.

• Experience testing wearables, hearables, or health-monitoring devices.
• Exposure to automated production test systems (ATEs, fixtures, scripts).
• Knowledge of medical or consumer compliance standards (ISO 13485, IEC 60601 – plus).
• Experience working closely with firmware, mechanical, and manufacturing teams.

• Strong debugging mindset with high attention to detail.
• Comfortable working across analog, digital, RF, and sensing domains.
• Highly hands-on, ownership-driven, and execution-focused.
• Passionate about building reliable, production-ready hardware, not just prototypes.