Enphase Energy seeks a Staff Analog Design Engineer to translate system requirements into block-level architectures and specifications. Responsibilities include designing analog systems and circuits, creating models for digital system verification, collaborating with digital design teams for integration, supervising the physical layout team, and collaborating with test engineering. The role also involves lab-based device evaluation, data analysis for test limit setting, and ensuring product specifications are met. The ideal candidate possesses 5-8 years of experience in precision analog CMOS mixed-signal integrated circuit design, strong expertise in high-speed ADCs/DACs, and experience with various building block circuits (op-amps, comparators, etc.).