NPI Quality Engineer

The NPI Quality Engineer – Solar Simulator & Calibration will own the reference device system that underpins power measurement across solar cell and module production. This position manages the full lifecycle of reference cells and reference modules (golden and standard modules) – from selection, build and verification through deployment, periodic re-verification and replacement – and operates and calibrates cell and module solar simulators (cell testers and flash testers) to keep power measurement accurate, consistent and traceable across production lines, global sites and accredited external laboratories.

• Establish and maintain the reference cell and reference module system, including selection criteria, build and verification processes, and the intended use and management rules for each reference tier.
• Plan new reference cells and modules in line with new products and technology changes (e.g., TOPCon, bifacial, tandem).
• Select reference cell and module candidates and perform initial evaluation of power performance and stability (I-V, EL and visual inspection).
• Determine reference values through accredited external laboratory measurements (e.g., NREL, TÜV, Fraunhofer ISE) and internal cross-checks, and manage registration and deployment to production sites.
• Maintain the reference cell/module database and lifecycle records (build date, reference values, assigned site/line, calibration, re-verification and replacement history) to ensure full traceability.
• Monitor storage and handling conditions (temperature, humidity, light exposure) and inspect reference cells and modules for cracks, corrosion or power drift.
• Operate, calibrate and maintain cell solar simulators (cell testers) and module solar simulators (flash testers), including related I-V measurement systems.
• Manage cell-level measurement calibration, including reference cell calibration, spectral mismatch and irradiance/temperature control, and verify consistency between cell and module power measurements (cell-to-module).
• Collect and trend daily, weekly and monthly reference cell and module measurement data, using SPC to detect anomalies early and analyzing long-term stability and degradation.
• Analyze correlation between in-house cell/module testers and external laboratories, identify scale gaps between sites, lines and testers, and develop calibration strategies.
• Analyze measurement uncertainty factors (temperature, irradiance, spectrum, non-uniformity) and drive uncertainty reduction activities.
• Plan and execute round robin tests of reference cells and modules across sites and lines, and analyze the results.
• Investigate root causes when measurement deviations or out-of-tolerance reference values occur, and propose corrective actions.
• Develop and revise reference cell/module operation guidelines and support their implementation at global production sites.

• Bachelor’s degree in a relevant field (Electrical Engineering, Physics, Materials Engineering, etc.).
• Minimum of 3 years of experience in quality, measurement/metrology, calibration or test engineering roles.
• Understanding of PV cell and module electrical characteristics and I-V measurement principles.
• Strong data analysis skills, including statistical methods (SPC, correlation analysis, MSA).
• Excellent problem-solving and analytical skills.
• Outstanding teamwork and communication abilities.
• Ability to work under pressure, self-motivated, and driven team player.
• Proactive approach toward various issues.

• Hands-on experience operating or calibrating cell and/or module solar simulators (cell testers, flash testers)
• Experience in solar product…