Our Leadership

Learn more about our leadership team.

Dr. Thomas Armel

Founding Partner and Director of Technology

Tom is a Founding Partner at QS-2 and Director of Technology. He is a recognized subject matter expert with deep expertise in multiple diverse fields, including synthetic biology, biophysics, molecular and cellular biology, biochemistry, and genomics, and is responsible for leading the firm’s Biotechnology and Neuroscience service arms. He has managed projects in industrial biotechnology, synthetic biology, biosecurity, infectious disease, diagnostics, and therapeutics development, with experience spanning from cutting-edge academic research efforts to large-scale translational projects with biotechnology and pharmaceutical companies.

Before founding QS-2, Tom worked at Booz Allen Hamilton supporting projects in biotechnology and synthetic biology, and served as a Research Fellow at Harvard Medical School in the Systems Biology Department where he was awarded a Ruth L. Kirschstein National Research Service Award.

Tom holds a Ph.D. in Molecular, Cellular, and Developmental Biology, with a Graduate Certificate in Biophysics, from the University of Colorado at Boulder, and a Bachelor’s of Arts Degree in Chemistry-Biology from Whitman College.


Dr. David Guarrera

Founding Partner and Director of Analytics

David is QS-2’s Founding Partner and Director of Analytics. He is a proven thought leader with years of valuable insight supporting the statistics, machine learning, and analytics space, and leads the firm’s analytics and mathematics practice areas. His expertise and past projects include a wide range of technical subjects spanning machine learning, mathematics, statistics, data analysis, network theory, optimization, and theoretical physics. He has also managed projects involving other scientific areas requiring mathematical expertise including epidemic and population modeling, high-throughput biological phenotyping, and electric grid, power systems, and waste-water re-use engineering.

Prior to founding QS-2, he worked at Booz Allen Hamilton where he supported big data, mathematics, and physics programs.

Dave holds a Ph.D. in Theoretical Physics (focusing on theoretical particle physics and superstring theory) from the Massachusetts Institute of Technology, completed Part III the Mathematics Tripos at the University of Cambridge, and holds a Bachelor’s of Science Degree in Physics and Mathematics from Northwestern University.


Dr. Richard Lepkowicz

Director of Physical Sciences

Rich leads the physical sciences practice area, which encompasses both the fundamental and applied sciences. He has served as a trusted advisor in disciplines spanning from quantum information sciences and atomic, molecular, and optical physics, to optical system design, computational imaging, and position, navigation, and timing. He also has extensive experience in developing aggressive research programs in optical design, novel optical materials, computational imaging, and nonlinear optics. Rich has a passion for helping his clients develop and manage programs that reexamines the tenets of a field or address old challenges from new perspectives.

Prior to joining QS-2, Rich was a tenure track faculty member in the Physics and Optical Engineering Department at Rose-Hulman Institute Technology and a Research Professor at the University of Arizona. He has also held senior positions with Booz Allen Hamilton and MITRE.

Rich received his Ph.D. and Master’s Degree in Optics from The Center for Research and Education in Optics and Lasers (CREOL) at the University of Central Florida and holds a Bachelor’s of Science Degree in Physics from Georgia Tech.


Ms. Mattie Couples

Facility Security Officer

Mattie is the Facility Security Officer for QS-2 where she is responsible for directing industrial security programs including personnel, physical, and information security disciplines in support of U.S. Government clients. She has over three decades of security experience, and prior to joining QS-2 served as the Director of Security for Betac Corporation/ACS Defense and Gray Hawk Systems.