Explore our talent

Both the SimIS leadership team and supporting staff provide the talent and diversity to accomplish various tasks that are outside of their routine skillset. Innovation and determination remain a key factor in our success, along with the unparalleled relationships we build with each of our partners and clients throughout the defense, healthcare and business communities.

Executive & Administrative Staff

Johnny Garcia, Ph.D.

CEO

Johnny Garcia, Ph.D.

CEO

Location: Portsmouth, VA

Dr. Johnny Garcia is the Founder and CEO of SimIS, Inc. He has over 25 years of engineering experience that includes systems architecture design, software development, database development, C4I systems development, logistics systems development, and new technology insertion for the Department of Defense, Department of Energy, NASA, Department of Commerce and Department of Homeland Security. Dr. Garcia has received a Bachelor of Arts Degree and a Bachelor of Science Degree from St Leo College, Master of Business Administration and Masters of Science from Florida Institute of Technology and completed his PhD in Modeling and Simulation from Old Dominion University.

Dr. Garcia is a result-oriented professional with experience, and comprehensive expertise in development of Models and Simulations, Command and Control, Targeting and Service Oriented Architecture applications. He has sixteen years of experience and training in combat, aerospace, and related systems. Dr. Garcia served in the US Navy for six years as an Operations Specialist and received numerous awards and commendations. Dr. Garcia used this experience and simple core values of integrity, quality and honesty to build SimIS.

Amber Horton

VP/Chief Finance Officer

Amber Horton

VP/Chief Finance Officer

Location: Portsmouth, VA

Amber Horton is VP/CFO of SimIS Inc. She has more than 12 years’ experience in accounting and small business supporting the Department of Defense. Amber has grown with SimIS since its inception in 2007.

Amber has earned a Bachelor of Science in Accounting and Management from Old Dominion University, and received her MBA in Accounting and Finance from Florida Institute of Technology.

Warren Bizub

VP/Chief Technology Officer

Warren Bizub

VP/Chief Technology Officer

Location: Orlando, FL

Mr. Warren Bizub is the Operations and Business Development Manager, Florida field office, for SimIS, Inc. Mr. Bizub served 35 years working for the Department of Defense. He served as Chief for Technical Solutions, Advanced Concepts Program Director and Joint Advanced Training Technologies Laboratory Director at US Joint Staff J7 and US Joint Forces Command responsible for development and delivery of military training and education with an emphasis on innovation and joint solutions from 2003–2014.

Mr. Bizub began his career in 1976 when he joined the USAF. He served four (4) years as a technician and received an Honorable Discharge in 1980. He started his civil service career in 1983 and graduated from the Defense Logistics Agency Reliability/Maintainability & Quality Assurance Intern Program in September 1986. As an intern he served in rotational assignments at the Fleet Analysis Center in Corona, CA, at the Supervisor of Shipbuilding in Norfolk, VA, and David Taylor Naval Ship Research & Development Center, Annapolis, MD. Following his internship, Mr. Bizub held positions as a Quality/Reliability engineer, project engineer, Trainer Systems Support Activity Manager, Program Manager and In–Service Engineering Branch Head with the Naval Air Systems Command from 1986–1999. He was the Office of Navy Research Naval Research Science Advisor for the Commander, Naval Air Forces, US Atlantic Fleet from 1999–2003. Mr. Bizub received his B.S. degree in Ocean Engineering at Florida Institute of Technology (1982), M.S. degree in Engineering Management at University of Central Florida (1990), is a graduate of the Defense Systems Management College’s Advanced Program Manager Course (1997), graduate of the Navy’s Senior Executive Management Development Program (2001), and is certified as a Defense Acquisition Workforce Improvement Act (DAWIA) Level III Program Manager and Systems Engineer. He is a MIT fellow of Seminar XXI: Foreign Politics, International Affairs, and the National Interest (2003).

Richard Tirrell

Program Director

Richard Tirrell

Program Director

Location: Stafford, VA

Richard Tirrell is the Program Director for the Stafford field office, for SimIS, Inc. Rick is a career Marine, serving as both Enlisted and as an Officer, from Electronic Counter-measures Technician to Aviation Command and Control. His 23 year career in the Corps included tours in the four Marine Aircraft Wings, two MEU (SOC) deployments, a tour at MAWTS-1 and schools at Army Command & General Staff College. Though his tours of duty were predominantly operationally focused, participating in Volcano Relief in the Philippines, Humanitarian Relief and Evacuation in Somalia and Non-combatant Operations in Burundi, he also served as the USMC Test Director for the Advanced Tactical Air Command and Control Center (ATACC) and Theater Battle Management Core Systems (TBMCS). Since retirement in 2007, Rick has supported the Marine Corps Systems Command and Capabilities Development & Integration as an Enterprise Architect. Using his experiences from operations in the Marine Corps in addition to his formal and off-duty education, he has contributed to the advancement of architecture as support to Capability Development for the Marines. Mr. Tirrell is a Certified Enterprise Architect, ITIL Level 3 Credentialed and holds a B.S. Springfield College and his Masters in Computer Resources and Information Management from Webster University. His results oriented professionalism and team building skills have been successful in providing quality support to the Marine Corps architecture community while providing innovative and lasting contributions to the broader architecture domain within DoD.

Phoebe Stelle

Contracts Officer

Phoebe Stelle

Contracts Officer

Location: Portsmouth, VA

Phoebe Stelle is the Contracts Officer for SimIS, Inc. She has over 15 years of dedicated experience in contract administration with both large and small organizations. Phoebe has been negotiating contracts for SimIS since 2013. Detail oriented with a versatile skill set in the areas of DoD and Commercial contracts, accounts receivable and payable, procurement, business development and website design and implementation.

Sandra Worthy

HR and Finance Coordinator

Sandra Worthy

HR and Finance Coordinator

Location: Portsmouth, VA

Sandra Worthy is the HR and Finance Coordinator at SimIS, Inc.

Sheridan Moncion

Human Resources Generalist

Sheridan Moncion

Human Resources Generalist

Location: Portsmouth, VA

Sheridan Moncion is the Human Resources Generalist at SimIS, Inc.

Amanda Dunn

Administrative Assistant

Amanda Dunn

Administrative Assistant

Location: Portsmouth, VA

Amanda Dunn is the Administrative Assistant at SimIS, Inc.

Bill Campbell

JPO Support Contract Program Manager

Bill Campbell

JPO Support Contract Program Manager

Location: Portsmouth, VA

Bill Campbell is the JPO Support Contract Program Manager.

Nicole Swartz

Contract Specialist

Nicole Swartz

Contract Specialist

Location: Portsmouth, VA

Nicole Swartz is the Contract Administrator for SimIS inc. She has over 17 years’ experience in contract management and most recently 5 years’ experience in proposal preparation from the start to finish for both government and commercial organizations. She has earned a Bachelor of Science Degree in Business Administration, Associate’s Degree in Paralegalism, and a certification in Research Administrator. Nicole has a proven track record in prioritizing workloads, meeting goals and deadlines, and submitting complaint proposals or required reports promptly in environments of frequent change and unexpected events. Additionally, Nicole’s versatile skill set includes: budget development and management, expenditure control, financial reporting, contract negotiation, and regulation/policy compliance review.