As someone who studied engineering I have to say my maths skills have only atrophied enormously since becoming a full-time developer.

Which is a shame, I see software sometimes that appears to have some special heuristics in there when I'm sure a standard statistical technique would've achieved the same or better result.

I have a theory that the info-sec industry would benefit from folks with robust stats/data-mining/"big data"/algorithms training (in a lot of ways bioinformatics people are solving similar-looking problems).

Edit: Yes, http://securabit.com/2014/10/03/securabit-episode-129-bioinf... said the same thing... :)