David Johannsen is president of Johannsen Engineering. Previously he was president of Core Concepts.
In 1998 he was a founder and president of Silerity, which was acquired by Viewlogic in 1995.
In 1981, Johannsen was a co-founder and VP of advanced products and research for Silicon Compilers Inc.
Johannsen has a BS, MS and PhD in computer science from CalTech.