John Tucker began his process chemistry career at Pfizer in 1995 where he invented commercial synthetic processes for three marketed medicines. He played a key role during this time initiating Pfizer’s Green Chemistry program and served on Pfizer’s Global Green Chemistry Team and as the chair of the La Jolla site team. In 2006 he became a founding scientist and Director of Green Chemistry at BioVerdant, a biotechnology firm focused upon the use of sustainable enzymatic catalysis for chiral drug manufacture. In 2009 he moved to the process chemistry group at Amgen where he led GMP small molecule manufacturing and program management while creating Amgen’s Green Chemistry program and serving as a co-chair of the ACS Green Chemistry Institute’s Pharmaceutical Roundtable. He is currently Executive Director of the Chemical Development department in the CMC group at Neurocrine Biosciences, leads Neurocrine’s Green Chemistry program and continues to serve on the ACS GCI Pharmaceutical Roundtable.