Overall Purpose & Expectations on the Role

Build a data-driven reliability validation system that predicts field performance (e.g., 2-year lifespan for hinge cases, 500-hour speaker playback).
Act as the gatekeeper for robustness – no product passes PVT without completing all reliability test criteria.
Translate customer return patterns into new test methods and standards.
Provide clear, actionable failure analysis to DQE and R&D – not just “fail,” but “failed due to X, recommend Y.”
Maintain lab discipline: calibrated equipment, repeatable test setups, and documented procedures.

Job responsibilities 

Test Planning
– Develop reliability test plans based on usage profiles, standards, and return data.
– Define test methods, sample sizes, acceptance criteria, and durations.
– Create product-specific matrices for environmental, mechanical, electrical, and acoustic tests.
Test Execution & Lab Management
– Execute or supervise: temp/humidity cycling, thermal shock, salt spray, UV, IPX (waterproof), drop, vibration, abrasion, charge cycles, and acoustic aging.
– Maintain lab equipment and calibration schedule.
– Ensure test setups are repeatable and properly documented.
Failure Analysis & Reporting
– Lead root cause analysis on test failures – distinguish design vs. material vs. process vs. test error.
– Issue formal reliability test reports with pass/fail status, statistical summary (Weibull if needed), and recommendations.
– Maintain reliability database for historical comparison.
Standards & Methodology
– Establish/refine internal reliability test standards based on field data .
– Train junior engineers and technicians on test protocols.
Cross-Functional Support
– Work with PQE to ensure test requirements are captured in DFMEA.
– Support PQE with reliability data for quality gate reviews.
– Provide reliability input for supplier qualification (battery, hinge, switch vendors).

Qualifications Required

1) Bachelor’s degree or above in Mechanical, Electronics, Materials, Acoustic Engineering, or related field.
2) 5+ years of reliability testing experience in consumer electronics. Must have led reliability validation for at least 3 products (earbuds, speakers, or cases).
3) Certificate: CRE (Certified Reliability Engineer), Six Sigma Green/Black Belt, or equivalent.
4) be familiar with IEC 60068 (environmental), ASTM (mechanical), GB/T 2423, IPX (IEC 60529).
5) Has the experience of Thermal chambers, vibration shakers, drop testers, salt spray chambers, data loggers, multimeters, acoustic test systems (Sound Check).
6) Be familiar with the analysis of reliability such as Weibull analysis, MTBF/MTTF prediction, confidence intervals, basic statistics (mean, standard deviation).
7) With the practical experience of Root cause analysis (5 Whys, fishbone, 8D), microscopic inspection, cross-sectioning, material identification.
8) Has the Specific Knowledge such as Earbuds: sweat/corrosion, cable flex, hinge cycles, charging pin durability.
9) Language: English – able to read international standards and write test reports in English, with basic oral communication.