Computational chemistry (mostly pharma/biotech companies) employs a lot of FORTRAN codes (quantum mechanics, molecular dynamics, monte carlo, etc.). The 2-3 co

Computational chemistry (mostly pharma/biotech companies) employs a lot of FORTRAN codes (quantum mechanics, molecular dynamics, monte carlo, etc.). The 2-3 codes I've spent time understanding are examples of text book bad programming practices though (not to say there aren't some good ones). Also if you don't mind your input files being 80-column punch card formats.