| 2017-present | Biotech & Biopharma Consulting, Jerusalem Israel |
| 2013-2017 | Chief Technology Officer, FutuRx Ltd, Ness Ziona, Israel |
| 2007-2013 | Senior Vice President R&D and Chief Technology Officer, NasVax Ltd, Ness Ziona, Israel |
| 2007-2009 | Vice President R&D (20% of time), Meytav Technology Incubator, Kiryat Shmona, Israel |
| 2006-2007 | Senior Vice President R&D, AVANT Immunotherapeutics Inc, Needham, MA, US |
| 1998-2005 | Senior Vice President R&D and General Manager (final position), ID Biomedical / Shire Biologics / BioChem Pharma, Northborough, MA, US |
| 1996-1998 | Senior Director Vaccine R & D, Astra Research Center, Cambridge, Massachusetts, US |
| 1982-1996 | Executive Director Virus & Cell Biology (final position), Merck Research Laboratories, West Point, Pennsylvania, US |
| 1986-1996 | Adjunct Assistant Professor of Microbiology, University of Pennsylvania, Philadelphia, Pennsylvania, US |
| 1979-1982 | Staff Fellow, Laboratory of Tumor Virus Genetics, National Cancer Institute, Bethesda, Maryland, US |