Bob Donahue

Chief Executive Officer

Bob Donahue, Jr. is Chief Executive Officer of By Light. Bob’s in-depth expertise in the Government Telecommunication Sector has been the driving force behind the rapid growth of the company. Prior to starting By Light, Bob served as an active Duty Army Officer with extensive real world experience in both tactical and strategic communication units. His last assignment was as Program Manager for the DISN Expansion Program (DEP) at DISA, delivering critical infrastructure to the Department of Defense. Bob has an M.S. in Telecommunications and a B.S. in Computer Science. Military qualifications include the Master Parachutist Badge and Ranger Tab.

BG Brian Donahue (Ret.)


Brian Donahue currently serves as a cyberspace operations subject matter expert & President of By Light. He provides counsel to leaders at the Joint Force Headquarters-Department of Defense Information Network (JFHQ-DODIN) and the Defense Information Systems Agency (DISA). Brian served over 30 years in the U.S. Army and he brings extensive experience from Service and Joint assignments. Brian’s worldwide duties ranged from the tactical to the strategic with over 11 years at Corps and below (eight years with the 82nd Airborne Division), responsibilities for U.S. Army networks across the Pacific Theater, and the creation of Task Force 236 to meet urgent operational needs in Afghanistan. Brian’s experience and expertise encompass the operational concepts and technical parameters that underpin the security, operations, and defense of the DODIN.

Mike Bowser

Chief Operating Officer

Mike has been developing and delivering DWDM, SONET, ATM and IP solutions to the Federal Government for more than 14 years. Prior to joining By Light, Mike served as Vice President of Federal Systems for LAMBDA Opticalsystems where he focused on 3D MEMS based all-optical-switching and metro DWDM platforms. He also led worldwide sales efforts at Acorn Networks, a semiconductor manufacturer specializing in OC-192 traffic shaping and hardware-based QoS solutions. Mike has also served as a Global Account Manager for Fore Systems/Marconi where he directed all aspects of the USAF sales territory. Prior to Fore Systems, Mike held engineering management positions with DynCorp and Harris Corporation. He holds B.S. degrees in Computer Engineering and Business Administration and is a distinguished graduate of the Defense Language University.

John D. South

Chief Financial Officer

John joined By Light in 2006. John has held several executive and senior-level finance positions with telecommunications companies, namely TeleCorp PCS (former AT&T Wireless affiliate) and the U.S. unit of Cable & Wireless. John began his career in public accounting with KPMG Peat Marwick and Laventhol. John is a CPA with a Master’s Degree in Taxation from American University and a B.S. in Accounting from University of Maryland.

Mike Hatcher

Chief Revenue Officer

Mike Hatcher is a seasoned executive possessing more than thirty-five (35) years experience in delivering defense, security, and intelligence services to warfighting and mission customers. He joined By Light in 2019, and is responsible for all Growth Activities for the company. Prior to joining By Light, Mike was VP/General Manager – Joint, Air Force and Coalition sector at General Dynamics IT where he led a team of nearly 5,000 highly-skilled professionals delivering world-wide capabilities and services for some of the most demanding, mission-critical customers in the world. Prior to that, Mr. Hatcher was Senior Vice President, C4 Mission Systems and Services for SAIC – responsible for large-scale systems and network support to US Combatant Commanders and the North Atlantic Treaty Organization (NATO). Mike graduated cum laude with a BS in Computer Science from Texas A&M University-Commerce in 1981. He is a member of AFCEA as well as the Association of the US Army. He is also a member of the strategic advisory board for the Global Special Operations Forces Foundation and a national representative to the NATO Industrial Advisory Group. Mike and his wife Taylor are frequent supporters of the Stay-In-Step Foundation helping wounded warriors, as well as the Navy Memorial, the USO and the Camp Alleghany for Girls.  

Lucy Donahue

Chief Strategy Officer

Lucy Donahue is responsible for defining the overall vision, corporate branding & strategic partnerships at By Light through digital innovations. With over 20 years of technology and business experience in federal and private sectors, Ms. Donahue is a pioneer who leverages real world knowledge to accomplish business and client goals. Prior to By Light, Ms. Donahue delivered profitable growth for Cisco Systems in Federal Healthcare and the Department of Defense, playing a significant role in Cisco’s partnerships with customers and industry organizations to enable the Government to complete its mission to protect, defend, and serve the nation. Ms. Donahue holds a B.A. degree in Psychology from Catholic University of America, Washington, D.C.

COL (Ret.) Rod Phillips, PhD, PMP, SSBB

Chief Learning Officer

Rod served more than 29 years in Army positions that required mission-critical telecommunications solutions at tactical, operational, and strategic levels, and supported worldwide joint and special operation requirements. Prior to joining By Light, he served as the Chief Information Officer/G6 for 1st Corps at Fort Lewis, WA. He was directly responsible for the Command, Control, Communications, Computers and Intelligence (C4ISR) design, deployment, and integration of signal resources for 1st Corps throughout the Pacific Region. In this role, he led the procurement, operation, management, and systems-of-systems interface for joint and combined communication networks in support of foreign internal defense, peace keeping, direct actions, and humanitarian operations. His By Light responsibilities include project management roles with AMC, AGC, DARPA, and special programs.

Don Cole

Principal & Senior Vice President, DISA

Don joined By Light in 2004 and serves as Senior Vice President of Defense Information Systems Agency (DISA) programs. With an extensive background in the telecommunications arena of more than 35 years in the areas of management and business development, Don has led multiple large-scale telecommunications projects for billion-dollar industry leaders. Before By Light, Don held various key positions at AT&T in sales, marketing, and program management. Under his leadership, AT&T successfully implemented high technology programs with the Department of Defense, federal civilian agencies, and foreign governments. Following AT&T, Don joined Qwest Communications Government Systems as Senior Director of DoD Programs, where he played a critical role in the development of Qwest’s defense market and provided leadership and management for all project activities supporting the Defense Department. In addition, he established and managed the Qwest team supporting the National Coordinating Center for Telecommunications (NCC) and the President’s National Security Telecommunications Advisory Committee (NSTAC). Don holds a Master’s Certificate in Project Management from George Washington University.

Mary Harcharik

Vice President, Human Resources

Mary Harcharik has over 30 years of experience in human resources management, spanning a variety of industries including the federal and private sectors, as well as non-profits. In her role at By Light, Ms. Harcharik manages all aspects of the Human Resources including strategic initiatives for staff development and management, compliance with all state and federal regulations, competitive benefit plans, and improved process efficiencies that support the organization’s vision, mission and brand.  Ms. Harcharik holds a bachelor’s degree in Education from Northern Illinois University and is a SHRM certified professional.

Elissa Wylie

Vice President, Talent Acquistion

Elissa has over 20 years of experience in Talent Acquisition concentrating in the recruitment of Information Technology Professionals.  She has an extensive background supporting government customers in the DoD, Intel and Federal & Civilian space in addition to supporting the commercial market focusing on the Telecommunications and Financial industry.  In her role at By Light, Elissa is responsible for all aspects of Talent Acquisition to include delivery, strategic sourcing and optimization.  Prior to joining By Light, Elissa was the Talent Acquisition Director for the Federal & Civilian Division for General Dynamics Information Technology where she led a team of 45 recruiters.