AMD , SOCTRONICS , QUALCOM
Synopsys for FAE ,I am not sure about IP developement, where PD work involved.
Many small players and Consulting companies.
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Infotech is other one , which is growing .
Best thing is ,send your profile top Techpoint solutions consulting firm and ask for the PD companies in HYD. If you are fresher, they may not provide and can get as many details if you have experience.