Management Team

Dana Leff Niedzielska


Dana Leff Niedzielska is the Chief Executive Officer (CEO) and founder of Sofia Bio, LLC. She also serves as CEO for August Research, a niche clinical research organization conducting clinical trials in Central and Eastern Europe (CEE). Previously, she founded and ran AbCRO from 2000-2009, a regional CRO focused on the same region which was acquired by a global CRO in 2009. Prior to starting AbCRO, Dana worked in Bulgaria as a volunteer with the MBA Enterprise Corps from 1997–1999. She has a B.S. degree from Cornell University and an MBA from The Darden School at the University of Virginia.

Lukasz Niedzielski


Lukasz Niedzielski is the Chief Financial Officer (CFO) of Sofia Bio, LLC and also serves as the CFO of August Research, a related company conducting clinical trials in Central and Eastern Europe. Previously, Lukasz was the CFO of AbCRO (2006-2009) , a niche CRO working in Eastern Europe. Prior to joining AbCRO, Lukasz worked at General Electric (1996-2006) in both Poland and the United States within a number of GE Finance businesses. Lukasz has a B.S. from United Business Institute in Brussels and an EMBA from the Trium Program (NYU Stern, London School of Economics, HEC Paris).

Joanna Breycheva

General Manager

Joanna Breycheva is the General Manager of Sofia Bio, LLC. She joined the company in 2009 when Sofia Bio was spun out of AbCRO, Inc. Previously, she held numerous positions at AbCRO, Inc. including Business Development Associate and Feasibility Manager for Central and Eastern Europe. Before joining AbCRO, Joanna was a sales manager at Diagnosis LLC. Ms. Breycheva has a Masters Degree in Organic Chemistry from the Universtiy of Chemical Technology and Metallurgy in Sofia, Bulgaria and a B.S. (Biotechnology) from the University of Vienna. She has an MBA degree from the American University in Bulgaria.