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

Charles Grabenstein has been with ORBIS since 2012 and works out of the Groton, CT 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.

Shauna Burrows
Chief Operating Officer

Shauna Burrows oversees all DoD and commercial customer services, marketing and corporate development strategy and operations, as well as ORBIS’ engineering, technical, trade and consulting services divisions. Shauna started with ORBIS in April of 2005, and as Chief Business Development Officer (CBDO), managed the corporate marketing activities including strategic marketing planning, major program initiatives, as well as the business development and proposal processes. Her business background spans over 17 years in the defense arena.  Mrs. Burrows is a graduate of the University of Alabama with a B.A. in Communication and Informational Services, and also serves in various professional, civic and community organizations.

Karl Farber
Chief Contracts Officer and Facility Security Officer
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),
John Ellsworth
General Counsel and the Executive Vice President of M&A

Mr. Ellsworth is an accomplished senior business executive and chief legal officer with deep experience in negotiations, complex transactions, mergers & acquisitions, international business, governance, human resources and finance. Prior to joining Orbis, Mr. Ellsworth served as a Managing Director at Auctus Capital Partners, a middle market investment bank. John has held leadership positions with two publicly traded companies from 2000 to 2017, including executive vice president and general counsel for Fortune 1000 international technology solutions provider ScanSource and retail chain One Price Clothing.

Mr. Ellsworth received his Bachelors in political science and communications from the University of Wisconsin-Madison and his J.D degree from University of Minnesota Law School.

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.
Craig Richard
VP Corporate Development
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.
Mike Mahony
VP Business Development

Mike Mahony joined the ORBIS team in 2020 and leads the company’s business development efforts. As Vice President of Business Development, Mike is responsible for strategy, development, leadership, implementation and oversight of the procurement and expansion of profitable new business opportunities that build upon relationships among both existing and new partners. Mike served in the active duty Army for 24 years as a senior aviation officer and AH-64D Apache Helicopter Pilot in Command to include 4 combat tours in Iraq and a tour in Bosnia Hercegovina. His last active duty position was Military Professor in National Security Strategy at the Naval War College. Since retiring from active duty, Mike immediately started work as VP of BD and Senior Program Manager for small businesses and helped them grow. Before joining ORBIS, Mike was managing a $1B pipeline for Serco across numerous verticals. Mike holds degrees from the University of Rhode Island (BS in Mechanical Engineering) and the Naval Postgraduate School (MS in Mechanical Engineering). 

Earl Donnell
VP Industrial Services

Earl Donnell joined ORBIS in 2007 after 38 years at Portsmouth Naval Shipyard.  At ORBIS, he has been a Program Manager supporting NAVSEA 04XR & Corporate Resource Teams and Founder of ORBIS Industrial Services Division.  During his government career, he managed the Production Department industrial organization responsible for the planning and executing submarine overhaul, modernization and repair work.  He ensured compliance with safety and environment regulations while focusing on quality, schedule adherence and cost control.  He has specialized knowledge and experience with all matters of DoD, NAVY and NAVSEA Resource Planning.  Shipyard positions included: Journeyman Marine Machinery Mechanic, Supervisor, General Foreman, Combined Trades GF, Nuclear Director, Nuclear Production Manager, Production Operations and Planning Manager and Program Manager for National Security Personnel System, where he received both the Meritorious and Superior Civilian Service Awards.  Government corporate positions included: Founder and Chairperson of the Corporate Production Resource Planning Team, member of the Naval Shipyard Leadership Development Board of Directors, NAVSEA Project Management College and Executive Leadership Course Instructor, Resource Management National Value Stream Manager, and Naval Shipyard Lean Management Board of Directors.

Doug Oglesby
VP Government Services Mid-Atlantic

Doug Oglesby joined the ORBIS team in 2017 and leads the Washington, DC office as the Director of Operations.  A career Navy Engineering Duty Officer, Doug concluded over 28 years of service with five years as the Program Manager for CVN 79 and CVN 80 (PMS 379) at the Washington Navy Yard.  He brings extensive acquisition, shipbuilding, and life cycle support experience to the ORBIS team.  Doug holds degrees from the University of Missouri-Rolla (BS in Aerospace Engineering) and Naval Postgraduate School (MS and Engineer’s Degrees in Mechanical Engineering).  He has also received Level III certification in both Program Management and Production, Quality, and Manufacturing from the Defense Acquisition University.

Jeff Cherry
Operations Director

Jeff Cherry joined ORBIS in September of 2005 following a 22 year career in the Navy during which he earned a B.S. in Nuclear Engineering Technology. He was assigned to the In Service Engineering Agent (ISEA) under ORBIS’ RADIAC and RADCON Professional Service Contract as the Assistant Radiation Safety Officer for the NAVSEA RADIAC Program. He stood up a radiation safety program for ORBIS and successfully applied for and received a Radioactive Materials License from South Carolina, which he managed as the Radiation Safety Officer until it was terminated in 2015 in anticipation of moving the RADIAC ISEA. He was assigned as the company’s first Quality Assurance Manager and led the development and certification of an ISO 9001 Quality Management System. In June of 2012 he was appointed as the Program Manager for the RADIAC Contract, managing the ISEA for the RADIAC Program and administrative support for NAVSEA 04ND and NASEADET RASO. He successfully transitioned the ISEA work from ORBIS Headquarters in Charleston, SC to the Naval Weapons Station in Yorktown, VA following the award of the RADIAC contract to ORBIS for a 3rd time in March 2017.

John Markowicz
Operations Director

John joined the ORBIS team in 2020 to lead operations in San Diego, California. He previously served in the active duty Navy for 28 years as a senior Engineering Duty Officer.  John brings to Orbis his life cycle management experience and a strong background in Fleet maintenance.  He is a former Program Manager for In-Service Carriers (PMS 312) and his last Navy assignment was Assistant Chief of Staff for Fleet Maintenance and Modernization at the staff of Commander Naval Air Forces, Pacific Fleet.   John holds degrees from Tufts University (BS in Mechanical Engineering) and the Naval Postgraduate School (MS and ME in Mechanical Engineering). He is certified DAWIA level III in both Program Management and Production, Quality, and Manufacturing.  He holds a Professional Engineer license in California.

Guy Beaudoin
Operations Director

Guy Beaudoin joined ORBIS in August of 2015 and became Director of New Hampshire Operations in December of 2018. Prior to ORBIS he completed a 35 year career at the Portsmouth Naval Shipyard in Kittery Maine as part of the Naval Nuclear Propulsion Program. Guy held several positions at the shipyard including Division Head in both the Nuclear Fluids and Mechanical Engineering Division and the Nuclear Refueling Engineering Division. When Guy retired from government service he had served as the Director of Radiological Controls. In this capacity Guy had a large staff of engineers, technicians, and scientists and was tasked with ensuring proper control of radioactivity during nuclear work. He also has extensive experience with Radiation Health, Emergency Planning and Environmental Monitoring. Guy holds a BS from the University of New Hampshire in Civil Engineering.

Marc Baillargeon
Operations Director
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.
Vickie Hoffmann
Operations Director

Vickie K. Hoffmann joined ORBIS - Charleston in September of 2004 as a test engineer working onsite at SPAWAR Atlantic developing test program sets for the Strategic Systems Programs Trident Submarine D5 Backfit Program.

Since that point, Vickie has concentrated on test engineering with a focus in technical project management, business development, and quality management.

Vickie has managed multiple DoD and Commercial contracts from RFP/RFQ development through final product acceptance and contract closeout.

Vickie holds degrees from Clemson University (BSEE) and The Citadel (MBA), and is a certified Project Management Professional (PMP). She resides in Mount Pleasant, SC with her husband Matt, two children (Luka and Sophia) and springer spaniel, Moxie.

Richard Tomasetti
Operations Director

Rick Tomasetti joined ORBIS in September 2017 and provides management, technical direction and business oversight in support of all ongoing operations and staff engineers in our Groton, CT office.  Rick has over 32 years of experience providing Engineering Services, Technical Direction and Engineering Program Management support to NAVSEA and the NAVSEA Warfare Center in Newport, RI.  Areas include system specifications, design and development, new equipment upgrades and shipboard implementation. Other general areas include quality control, program, project and organizational management, administrative and logistics support, database management, program implementation planning, and resource management.  He has a B.S. in Mechanical Engineering from New Jersey Institute of Technology and an M.S. in Operations Management from Rensselaer Polytechnic Institute.

Skip Mulligan
Director LABS

As the Director of Research, Development, Test and Engineering for ORBIS Lab, Charles “Skip” Mulligan leads a multidisciplinary team of talented engineers that tackle a diverse array of challenging engineering projects. Skip holds a Bachelor of Science in Electrical Engineering degree from Saginaw Valley State University and a Master of Science in Project Management degree with a professional focus in Systems Engineering and Technical Project Management from The Citadel. Additionally, Skip is a National Instruments Certified LabVIEW Architect (CLA) and Project Management Professional (PMP).

Skip is a fourth generation US Navy veteran and proudly served as an AEGIS Combat System weapons Firecontrolman, a Navy Advanced Electronics Field rating. While stationed aboard the USS Mitscher DDG-57, Skip completed an 8,000 hour apprenticeship in the trade of Electronics Mechanic, qualified as an Enlisted Surface Warfare Specialist and was awarded a Navy and Marine Corps Achievement Medal. Additionally, as a Technical Instructor stationed at the AEGIS Training and Readiness Center, Skip qualified as a Master Training Specialist and was awarded a second Navy and Marine Corps Achievement Medal.