John Davidson is the Vice President, R&D and Chief Scientific Officer and co-founder of Tangen Biosciences  John co-founded Tangen Biosciences in 2013. John has focused on bringing to market the TangenDx System, a highly sensitive molecular platform for rapid diagnosis of infectious disease. John joined Blue Heron Biotechnology in 2003, where he invented a novel cell-free DNA error correction method, and implemented it into an automated gene synthesis platform. John joined Ion Torrent in 2008, before the company had demonstrated proof of concept and prior to the acquisition by Life Technologies in 2010. John’s expertise in polymerase engineering and molecular biology was instrumental in developing and bringing to market the first semiconductor-based DNA sequencing instrument – The Ion Personal Genome Machine™ (PGM™) System. As the Senior Director for R&D, John was the technical lead for the Ion Proton™ System platform which successfully launched in 2012 together with a suite of automated sample preparation solutions. John received a Ph.D. in Biochemistry from Harvard University in 2000.