The Field Applications Engineer will provide technical support to key accounts in North China, troubleshoot circuit issues, and guide customers through design challenges. This role involves developing customized reference designs and collaborating with Sales, Marketing, and R&D teams. Responsibilities also include training distributor FAEs and gathering market insights. Candidates need 3-5 years of experience in power supply or semiconductor application support, proficiency in various power topologies, and strong communication skills in Mandarin and English.