​​Backend Process Engineer​

Job description

Location: ​ Alhambra, CA ​ Position Summary: The Backend Process Engineer – InP Wafer Fab position is responsible for development, optimization, and manufacturing support of backend wafer fabrication processes for Indium Phosphide ( InP )–based photonic devices, including DFB lasers, Semiconductor Optical Amplifiers (SOAs), and Gain Chip products. This role provides technical ownership of critical backend modules including wafer lapping/thinning, n-side metallization, rapid thermal annealing (RTA), and automated optical inspection (AOI). The position also supports singulation, optical coatings, reliability readiness, and packaging interfaces, with a strong focus on yield, defect reduction, and manufacturing stability. Responsibilities : Backend Process Ownership and Optimization (35%): Own and optimize backend wafer fab processes including lapping/thinning, n-side metallization, and RTA Establish robust process windows, recipes, and control limits for backend modules Maintain stable manufacturing performance through continuous monitoring and improvement Yield Improvement, Defect Reduction, and AOI Control (25%): Own and maintain AOI processes for backend defect detection and yield...