Stuart Mackiernan, Managing Director

Stuart Mackiernan is founder and Managing Director of Potomac Key Group, LLC. Mr. Mackiernan has over 25 years of experience in operational management and business development with major international services and systems integration companies.

Most recently, he served as CEO under contract from German technology firm Jenoptik AG.  In this role. He was responsible for restructuring, packaging and divesting their US subsidiary, which provided traffic management services to state and local governments.  Under his guidance the business was successfully sold to a Private Equity-backed market leader in 2010.

In 2007, Mr. Mackiernan led the successful effort to privatize CompuDyne Corporation , a Homeland Security and Public Safety integrator, by securing $110 million in Private Equity and debt financing. Upon the closing of the transaction, he was appointed  to serve as President and CEO managing 750 employees at four units.  He completed a major restructuring of the new CompuDyne,  significantly improving  Revenue and EBITDA in 2008.

From 2000-2004, Mr. Mackiernan held dual roles of Corporate Vice President, Commercial Business Development for defense contractor, L-3 Communications Corporation and Group President, L-3 Satellite Networks Division, reporting to the Chairman of L-3.  He was President of a $100 million military and commercial satellite communications integrator. In his commercial business development role, he was responsible for the L-3’s commercial mergers and acquisitions globally.

Previously, Mr. Mackiernan held senior positions in management and international business development with GE, SAIC and Unisys.  Mr. Mackiernan began his career at General Dynamics Corporation, where he rose rapidly to head Corporate International Business Development.

Mr. Mackiernan holds a M.Phil. in International Relations from Oxford University. He has an active Top Secret security clearance.