Must be proficient in designing and owning complex I/Ps like +ve/-ve Charge Pumps, Buck Converters, Source-Sink LDOs, Ultra-low power Oscillators (including Relaxation type), Temperature Sensor, Current Sense, SAR ADCs, Protection (Thermal, Under-Voltage, Over-Voltage, Over Current etc) and analog blocks including Bandgap references, V2I, Analog Buffers, Op-Amps, Comparators, High speed level shifters etc.  

Must have in-depth Understanding of and should be able to implement & compensate the Control Loops, Analog feedback loops and should know trade-offs between various compensation strategies. 

Should be able to build/support Block level spec break down from Top level chip requirements and independently own, design complete switching converter e.g. Buck, Boost, Buck-Boost etc and LDOs. Must be able to do block level error budgeting depending on the block requirements. 

Must be aware of relative differences of various control loop architectures (Constant Freq, Constant ON/OFF Time, Current mode etc) and decide/implement the best option to meet converter level performance specifications and other system requirements. 

Must be able to bring in innovative ideas to improve designs to meet challenging specifications. 

Should have in-depth knowledge of Analog layouts and be able to work closely with layout lead from floor planning till Chip Top completion and verification and do trade-offs based on desired performance