Quartus Engineering Incorporated has a capable and experienced staff of engineering professionals. Descriptions of the company principals are available below.

C. Douglas Botos President and CEO

Doug Botos has a Bachelor of Science degree in Aeronautical and Astronautical Engineering from Purdue University. He is one of the original Founders of Quartus Engineering. He has over twenty-three years’ experience in providing engineering services for a variety of industries from high volume consumer products design to analysis of highly engineered aerospace and launch systems. He has extensive experience with running a small business including profit and loss evaluation, geographic business expansion, personnel development and management, human resources management, IT management, and ESOP/401K retirement plan management.












Chris Flanigan Chief Financial Officer

Chris Flanigan has Bachelor and Masters degrees in Aeronautics and Astronautics from the Massachusetts Institute of Technology. He has thirty years experience in aerospace structures and structural dynamics. He is an expert in using NASTRAN superelement methodology and DMAP programming for analyzing extremely large models and advanced dynamic analysis.












Mark Stabb Chief Technology Officer

Mark Stabb has a Bachelors degree in Mathematics and Physics and Masters and a Doctorate degree in Engineering Mechanics from the University of Wisconsin at Madison. Mark has twenty years’ experience in performing structural and dynamic analysis of aerospace and mechanical systems. He has extensive expertise in developing and applying advanced analysis methods and tools for satellite dynamics, flutter analysis, and advanced modal survey pretest methods. In addition, Mark is one of the original Founders of Quartus Engineering, having been its CEO for thirteen years and currently acting as CTO.    Mark is a registered Professional Engineer in the states of CA, VA, WA, and HI. 





Jeff Frantz Vice President Sales, and Marketing

Jeff Frantz has Bachelor and Master of Science degrees in Mechanical Engineering from the University of Cincinnati. He has an Executive Management Certificate from UCLA. Jeff has over twenty-five years in engineering services sales and business development.










Jeremy Gustin Director of Engineering, San Diego



Jeremy Gustin has a Bachelor of Science degree in Mechanical Engineering from CSU Sacramento, and a Master’s degree from UC San Diego focused on advanced structural analysis. He has over 17 years’ of industry experience performing structural modeling, static and dynamic analysis, and testing of advanced mechanical and aerospace systems using finite element methods. His design and analysis experience of high performance lightweight structures covers a multitude of industries, including aircraft, space, optics, and sporting goods. His structural dynamics expertise has also afforded opportunities to support aeroelastic simulations for several manned and unmanned flight development programs.













Andy Kostuch Director of Engineering, Sterling



Mr. Kostuch earned a B.S. in Engineering Mechanics and Mathematics (2000) and an M.S. in Engineering Mechanics (2001) from the University of Wisconsin, with coursework and research activities focused on structural analysis, computational methods, and test-analysis correlation.  His industry experience has centered on advanced mechanical analysis of aerospace systems for government and prime contractor clients.   Mr. Kostuch has leveraged his experience over a broad range of applications including spacecraft, launch vehicles, aircraft, opto-mechanical systems, wind power systems, theme park attractions, medical devices, and basic research.  With Quartus since 2001, Mr. Kostuch opened Quartus’ first eastern region office in 2009 to support a growing local client base.  As Director he manages a diverse, responsive, and experienced engineering staff committed to providing customer focused mechanical engineering solutions.