Guy Mossman
Chief Executive Officer
Guy Mossman develops the strategic vision and guiding principles to achieve company growth goals and objectives. His keen engineering knowledge, deep understanding of Navy and DoD programs and astute leadership skills have led ORBIS to become a premier engineering and management service company providing expert solutions to our customers. Prior to establishing ORBIS, Guy was the Vice President of Operations at Life Cycle Engineering. He was also the Deputy Program Executive Officer for Submarines and a member of the US government Senior Executive Service where he received Civilian Meritorious and Superior Civilian Service Awards. He holds a B.S. degree in marine engineering from Maine Maritime Academy.
Charles Grabenstein
Chief Operating Officer
Charles Grabenstein has been with ORBIS since 2012 and works out of the Washington, DC office. Prior to ORBIS, he was the COO at SUBSYSTEM Technologies, Inc. where he was accountable for all client relationships, subcontractors and support contracts for the US Army, US Navy, Federal Aviation Administration (FAA), Drug Enforcement Agency (DEA) and Department of Homeland Security (DHS). From 1999 to 2010, Charles was a Vice President for Alion Science and Technology Corporation (formerly Anteon Corporation). He managed a $40M operation supporting NAVSEA PEO Submarines, PEO Aircraft Carriers, and PEO Littoral Mine Warfare. Charles holds a Bachelor of Science in Electrical Engineering from the University of New Haven.
John Bacak
Chief Financial Officer

John Bacak has been with ORBIS since 2018 and works out of the Charleston, SC headquarter office.  John is responsible for ORBIS’s overall financial functions and activities, including financial reporting and accounting, treasury, financial planning and analysis, tax, and outside auditors. John also provides leadership within the company’s operating units, including program finance. John brings over 30 years of experience of corporate finance, government contracting, and acquisitions.  Prior to ORBIS, John held senior financial leadership positions with both FORTUNE 500 companies and medium size professional services and government contracting firms.  John holds a Bachelor of Business Administration in Accountancy from James Madison University.

Bill Timme
Vice President, Operations

Bill Timme, Rear Admiral, USN (Ret) joined ORBIS in 2018 as the Vice President, Operations and works out of the Washington, DC office. He is responsible for driving process improvements and increasing client satisfaction in multiple programs across a diversified business portfolio. This includes a wide range of products and services from direct program office support to logistic sustainment and repair of equipment used globally. Prior to ORBIS, he was the Global Defense and Intelligence Segment Leader and Navy Account Leader at International Business Machines (IBM). Bill developed and implemented comprehensive strategic, enablement, and execution plans for the Defense and Intelligence Sector globally through IBM’s geographic and brand sales teams. As the Navy Account Leader, Bill led a team of account managers who focused on all elements of the Navy and Marine Corps and managed relationship building and pipeline generation of contracts in support of naval sea services. Before he joined the private sector, Bill was a flag officer, submarine officer and acquisition professional at the Naval Sea Systems Command for ten years. 

Shauna Burrows
Chief Business Development Officer
Shauna Burrows started with ORBIS in April of 2005. She manages the corporate marketing activities including strategic marketing planning, major program initiatives, as well as manages the business development and proposal processes. Her business background spans over 17 years in the defense arena.Shauna is a graduate of the University of Alabama with a B.A. in Communication and Informational Services. Shauna also serves in various professional, civic and community organizations.
Craig Richard
Director of Operations, Southeast
After a 23 year career with Naval Reactors/NAVSEA 08, with the last 8 years as the Naval Reactors Representative, Moored Training Ship, Charleston, Craig Richard joined the staff of ORBIS to lead our Southeast Division as the Director of Operations. Craig brings his wealth of experience and knowledge with naval nuclear propulsion, availability planning and execution, training, and research and development to our Charleston office. Craig is a graduate of the University of Pennsylvania (’88 BSE MEAM). In addition, Craig is a graduate of the Bettis Reactor Engineering School in Pittsburgh, Pennsylvania and the Naval Nuclear Power Training Unit in Charleston, SC.
Abdi Nazari
Abdi Nazari is responsible for operations management, business development, and marketing strategies in the mid-Atlantic region. He has over 32 years of experience in naval engineering, program management, customer relations, and business insight. Abdi has helped ORBIS provide superior client services and experience significant growth in this region. Abdi has degrees in Chemistry and Chemical Engineering from George Washington and Catholic Universities. He has received Level III certification in Program Management from Defense Aquisition University and from Harvard Business School in Program for Management Development (PMD).
Indra Nayee
Indra Nayee is a successful leader with a proven track record of strategically aligning the knowledge and experience to contribute to organizational growth. He possesses over 24 years of experience leading and managing technical and non-technical intelligence, developing productive teams, and aligning the resources to match the current and future needs. He is PMP certified and has extensive experience in project and program management to achieve maximum output with minimum resources. His motto is "love what you do, and do what you love."
Michael Desjardins
Director of Operations, New Hampshire Office
Michael Desjardins has held several key positions at Portsmouth Naval Shipyard over the past 34 years including Superintendent of the Inside Machine Shop, Deputy Nuclear Production Manager, and Project Superintendent on two Los Angeles Class Engineered Refueling Overhauls. Mr. Desjardins was presented with the Navy Meritorious Civilian Service Award for the first ever, early completion and under cost performance of a Los Angeles Class Engineered Refueling Overhaul on the USS City of Corpus Christi SSN 705. He was presented with the Navy Superior Civilian Service Award in January, 2014 for his work as the Director, Executive Support Office at Portsmouth Naval Shipyard. He completed the US Navy Apprentice program in 1980 and received a Bachelor of Science Degree in Industrial Technology from the University of Southern Maine in 1995.
Karl Farber
Director of Corporate Contracts and Facility Security
Karl Farber joined ORBIS in 2002. He has over 30 years experience in naval architecture/marine engineering and contract management for US DoD and commercial programs. With expertise covering engineering, contract support services, ship construction, operations, research and development, and contract administration/management arenas, Karl brings a wealth of knowledge with respect to commercial design and construction practices in support of Navy programs, with specialized emphasis on contract administration and management of engineering and professional services contracts. He is certified by the National Contracts Management Association as a Certified Professional Contracts Manager (CPCM). He is a graduate of the Webb Institute of Naval Architecture (BS, 1986) and Loyola University Maryland (MBA, 1996),
Scott Pratt
Director, Northeast Business Development
Scott joined the ORBIS team in December 2017 assuming responsibility for growing the business in the northeastern United States. He brings a wealth of experience having served over 29 years in the U.S. Navy. A former Surface Warfare Acquisition Professional, Scott had the honor of serving in command on five occasions accumulating over 10 years of command and senior leadership experience. His 20 years of operational fleet experience and Navy acquisition background are a perfect mix allowing him to understand both the operational and program management challenges faced by many of our customers. Holding three technical master’s degrees, Scott is also very adept in understanding the engineering and technical challenges faced by our customers. He is excited about having joined the Orbis team and to be back home in New England working in our Portsmouth, N.H. office.
Marc Baillargeon
Director Industrial Services
Marc Baillargeon graduated from the University of New Hampshire with a BS inBusiness Administration. He then completed the four year pipefitter apprenticeship at Portsmouth Naval Shipyard and received a Department of Labor Journeyman Certification. Before joining the ORBIS team in , Marc worked as a Production Resources Officer, Shop Superintendent, Assistant Production Department Refueling Manager, QA Manager, Nuclear Inspector/Supervisor, and Journeyman Pipefitter at the Portsmouth Naval Shipyard.
DiDi Rudd
Director of Human Resources
DiDi Rudd joined ORBIS in December of 2007. During her tenure with ORBIS, DiDi has developed and implemented various projects including HR compliance audits, onboarding, handbook development, policies, training, and benefits administration. In addition to managing the ORBIS HR department, DiDi is the company’s payroll administrator. DiDi Rudd, is an accomplished HR professional with over 16 years of human resources experience which includes developing HR processes and polices, compliance, employee relations, performance management, diversity, benefits and training.
Robert Bishopp
Director, Commercial Logistics Services
Prior to joining the ORBIS team, Bob was Branch Manager for DB Schenker Inc, the world’s second largest transportation and logistics provider based on revenues and performance. During his 20 years at Schenker, Bob opened and managed new branch offices in Charleston, SC, Cincinnati OH, and Louisville KY, and successfully advanced customers’ logistics needs into China, Russia, Japan, India, Australia, Czech Republic, Italy, Germany, France and Brazil. Bob’s professional background includes three decades of experience in managing international logistics projects, international freight forwarding, NVOCC operations, domestic and international air freight, heavy-haul transportation, and export packaging sales and consulting. He has also been active in the Charleston Brokers Freight Forwarders Association. Bob holds a BA, Business Administration and BS International Business from Xavier University in Cincinnati, OH.