While at START, Peter Weinberger was a Senior Researcher with a focus on countering violent extremism. In 2018, he became a Technical Advisor at Resonance Global, where he is the primary investigator and manager of all research undertaken on the CoVE-MENA team, USAID PEACE-IDQ.

Prior to joining START, Dr. Weinberger was a Senior Program Officer at the U.S. Institute of Peace (2008-2015), an Assistant Professor at the School of International Service at American University (2004-2008) and a Research Professor at the Institute for Conflict Analysis and Resolution at George Mason University (2003-2004). He received his doctorate in International Relations from the London School of Economics.