Bob Donahue Jr.

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.

Brian Donahue


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 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.

Rod Phillips, PhD

Chief Learning Officer

Rod served 29 years in Army positions requiring 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. At By Light, Dr. Phillips has served in project management and business development roles with AMC, AWG, DARPA, and special programs. He received his PhD in Information Technology and is currently responsible for the integration and optimization of learning management systems and organizational security. Dr. Phillips is PMP and Six Sigma Black Belt certified.

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.

Jason Cole


Jason joined By Light in 2005 and has 20+ years of program management experience. He serves as By Light’s Senior Vice President and is responsible for managing the Defense Information Systems Agency (DISA) business unit. Jason also provides technical and managerial oversight for Vice Presidents, Program Directors and Task Order Managers assigned to DoD locations around the world. Certified as a Project Management Professional (PMP), Jason successfully leads By Light’s large-scale IT programs implementing and sustaining DISA’s global transport, voice, video, and data network infrastructure, providing information superiority to the President, Combatant Commanders, Senior Leadership, Services, Agencies, and Warfighters. He is a graduate of Virginia Tech and holds numerous program management certifications.

Andrew DeLong

Senior VP, Federal Healthcare

Andrew brings over 30 years of management in a broad range of Information Technology program areas including Service Desks, Network Design and Management, Security Operations, Agile and DevSecOps program management, and asset management systems. He manages a Federal Healthcare portfolio comprised of roughly fifty concurrent projects with four hundred team members. Andrew provides By Light with a focus on properly resourcing and managing the financial health and delivery of our large healthcare focused business. Prior to joining By Light in 2011, Mr. DeLong was the Senior Director of Operations of GDIT’s Veterans Affairs (VA) business unit. At GDIT Andrew managed enterprise deployments of Wide Area Networks, Wireless infrastructure, and Network and Security Operations centers for the VA. Andrew holds a bachelor’s in computer science from the University of Texas and multiple project and technical certifications.

Tim Grattan

Senior VP, Cyberspace Operations

Tim serves as By Light’s Senior Vice President for Cyberspace Operations, supporting the Joint Force Headquarters – Department of Defense Information Network as a subject matter expert for cyberspace plans and operations. His current focus is on defensive cyberspace operations to include the education, training, and exercise of individual and collective skills required for network defenses. Tim joined By Light in 2015 after retiring from the U.S. Marine Corps – his last four years of service at U.S. Cyber Command as the Chief of Fires, responsible for offensive cyberspace operations, and command priorities supporting the development of the Unified Platform and the Cyber Mission Forces. Tim’s cyberspace operational experience is reinforced by service as a Marine Corps infantry officer campaigning in Afghanistan, Iraq, and Somalia. Tim is a graduate of the U.S. Naval Academy and holds multiple master’s degrees in planning at the operational and strategic levels of war.

Thomas Nixon

Senior VP, Homeland Security & Law Enforcement

Tom Nixon has spent the last 25+ years as a Federal Contract Executive with both large and small business experience. He has led Corporate Strategy and Growth for Fortune 500 companies and has helped small businesses grow through 8(a) graduation and beyond. He now serves as By Light’s Senior Vice President of Homeland Security and Law Enforcement.

Mr. Nixon has worked with private equity companies to help them achieve their financial goals and exit strategies. The most recent example of this was with SRA International, Inc., where Mr. Nixon served as Executive Vice President of Growth. SRA achieved substantial growth while maintaining industry leading margins. This set the stage for the merger with CSC and completed the profitable exit strategy of Providence Equity Partners, LLC. As the EVP of Growth he led Corporate BD, Capture, Corporate Strategy, Pricing, M&A, Proposal Management, and Corporate Technical Resources that developed product offerings.

Mr. Nixon holds a Masters of Technology Management, a joint degree from the Wharton School of Business and the Moore School of Engineering at the University of Pennsylvania, and an undergraduate degree in Finance and Economics from the University of Arkansas.

Bill Sackewitz

Senior VP, Digital Transformation

Bill Sackewitz is By Light’s Sr. Vice President of Digital Transformation and responsible for accelerating By Light’s adoption of technology best practices and new ways of working to create custom digital solutions, setting the standard for product and engineering capabilities. He oversees the maturation and expansion of key core competencies that include product management, human centered design, agile development, DevSecOps, and cloud services. After leading project teams in the engineering, manufacturing, and financial services industries, Bill joined By Light in 2012 and became a member of the senior management team in 2019. He holds a bachelor’s degree in Chemical Engineering from Brigham Young University. He is currently based in Utah where he oversees By Light’s western US operations.

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 Acquisition

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.

Bill Smith

Chief Technology Officer, Cyberspace Operations

Bill Smith serves as the Cyberspace Operations Chief Technology Officer (CTO) and Chief Information Security Officer (CISO) while leading By Light’s EmberSec cybersecurity division. Bill is a strategist with deep cybersecurity and information technology implementation experience. He is currently supporting U.S. Cyber Command, Joint Cyber Warfighting Architecture (JCWA)/Unified Platform, to align strategies ranging from the impact of emerging technologies to resolving complex cybersecurity challenges. Bill is responsible for helping define EmberSec’s vision for technology services; identifying and communicating technology trends affecting clients’ businesses; and shaping the strategy for emerging services and offerings. Prior to By Light, Bill served as a Chief Information Officer (CIO), Director, and technology lead on critical infrastructure and cyber programs for Federal and private companies including startups, financial services, exports, business, telecommunications, and public sector.

Thomas Ryan

Chief Technology Officer, Strategic Innovation

As the Chief Technology Officer, Tom aligns all technology and technological resources to effectively achieve the vision, strategic innovation, and organizational growth for short- and long-term goals. He consolidates the science and engineering efforts to optimize the integration of Agile practices, DevSecOps, Human Centered Design, and Project Management throughout By Light companies. When solving customer challenges, Tom leverages his more than 30 years of experiences and the lessons learned developing and implementing large-scale applications at companies American Management Systems (AMS), Electronic Data Systems (EDS), Hewlett Packard (HP), Harris Corporation and By Light. He provides insight and leadership for customer projects, product development, and business development across Federal, Civilian, Defense and commercial customers. Tom graduated from Texas A&M University with a B.S. in Economics. He is a Certified Scrum Master and Certified SAFe Agilist.

Mark Stine

Chief Technology Officer, DISA

Mark joined By Light in 2012 as the Chief Technology Officer of the company’s DISA Vertical to align and grow By Light’s expertise in delivering best in class network and cybersecurity services. His responsibilities include business development, capture and technical innovation across the vertical. Mark has over 25 years of network and security engineering expertise and has assisted DISA and various Intelligence Community customers in architecting their global private networks. Prior to joining By Light in 2012, Mr. Stine held varying positions with Century Link to include Network Chief Engineer, Sales Engineering Director and Sales Manager. He earned a Master of Science in Electrical Engineering specializing in optics from Johns Hopkins University.

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