An Analog IC Design Engineer is responsible for designing, simulating, and testing analog integrated circuits used in various applications like power management, communication systems, and sensor interfaces. They work with technologies such as CMOS and BiCMOS to develop circuits like amplifiers, oscillators, and voltage regulators. Their role includes schematic design, layout supervision, performance optimization, and ensuring the circuit meets specifications for power, speed, and reliability. Typically, they use simulation tools like SPICE and collaborate with layout engineers and verification teams to bring designs to production.