geniusThe system must have been designed by a mathematical genius.
child prodigyShe was labelled as a child prodigy by her early teachers.
eggheadThe eggheads at the University have been working on this for years.
brainsThe well-known comedian is the brains behind the new sitcom.
whizz-kidUKinformalThey hired some uni whizz-kid to lead the firm.
whizzUKinformalapprovingYou don't have to be a computer whizz to use this software.
clever clogs/dickUKinformaldisapprovingAlright, clever clogs, if you know all the answers, you can do it.