John studied architecture at Rhode Island School of Design and participated in the European Honors Program in Rome in 1967. He practiced residential architecture in Maine from 1979 to 2016. silverioarchitectureanddesign.com Throughout his life he has painted and in 2011 he became more involved in art. He continues to work on painting and sculpture in his studio.

His current work is based on geometric studies often employing the Fibonacci series or the Golden Ratio. He searches for a visual quality best described as radiance.

His artwork is represented by the Caldbeck Gallery in Rockland caldbeck.com and by Studio 53 in Boothbay Harbor studio53fineart.com . He has shown at the University of Maine and Unity College. He has taught architectural design at the College of the Atlantic and at the University of Maine. He is the author of three  books on architecture which can be seen at silveriowritings.com or on amazon.com.