was pretty easy. I had had an offer from them before, so I just contacted the hiring manager directly since I kept his contact. They needed specific skill that I had in addition to overall analog skill set. I had number of offers, and they matched the best I had

a simple written test followed by two rounds of interviews. In written test they test your aptitude and basic electronics engineering like basic RLC transients,basic circuits etc. In interview they start with questions based on your previous experience followed by some fundamental questions like R-C RLC transients , few op-amp circuits(UGB requirements,slew requirement etc) .