Management team

Jeff Berkley, PhD – CEO, Chairman and Founder

IMG_6547_webDr. Jeff Berkley is the CEO, Chairman and Founder of Mimic Technologies. Jeff brings decades of experience in the mathematics, engineering and healthcare disciplines focused on technology and virtual reality applications.

Jeff has applied his knowledge of haptic feedback and continuum mechanic-based tissue modeling to surgery simulation. He is a leader in the fields of haptics, surgery simulation and real-time finite element modeling. He is well known as a thought leader through his speaking engagements at academic settings and in print. He has served as a reviewer and authored articles for journals including IEEE Transactions on Visualization and Computer Modeling, Virtual Reality and Electronic Journal of Haptics Research and Medical Imaging.

Jeff has also served as an affiliate assistant professor of Industrial Engineering at the University of Washington, where he taught software development for virtual reality applications. He advanced his real-time algorithms while receiving his PhD in Mechanical Engineering from the University of Washington’s Human Interface Technology Laboratory (HIT Lab), one of the world’s premier virtual reality labs. He obtained his MS in Biomedical Engineering from Northwestern University.

Byron G. Smith, MBA – Chief Financial Officer & Chief Operating Officer

Byron is a finance executive specializing in increasing corporate profitability and performance by building strong finance teams that are trusted business partners to the operations they support. His background includes experience in computing (Intel, Cray), medical devices (Spacelabs), and biotechnology. In addition, Byron has an MBA from the Wharton School of Business.




Seth Green, PhD – Chief Technology Officer

seth green

Seth joined Mimic in 2010.  He brings significant knowledge in real time simulation, geometric algorithms, data analysis and real-time sensor integration.  Seth has over 20 years of software development and hardware design experience in both professional and academic settings.  More recently Seth has taken the role of CTO and oversees all of Mimic’s engineering teams and technology development.

Seth has published scholarly articles in sources including the International Journal for Numerical Methods in Engineering, ACM  Siggraph and the ACM Symposium on Solid Modeling and Applications.  Prior to joining Mimic, Seth contributed to motion compression algorithms and video game technology at Havok and created efficient techniques for improving the layout of integrated circuits at Intel.

Chris Simmonds – Vice President of Business Development & Marketing

simmondsChris started working with Mimic in 2014. He has 30 years experience in Sales & Marketing in the IT & healthcare business.  Most recently he has held Senior Marketing roles with Intuitive Surgical and Boston Scientific in the US & Europe where among his responsibilities was the development of their online interactions. Chris’s key areas of expertise include:  Training | Communications| Marketing | Strategy Development | Digital Infrastructure | e-Business | e-Commerce | General Management.

Chris holds Bachelor of Science from University College London and PGCE from St Edmund’s Hall Oxford University


Eric M. Ringer, PhD, JD – General Counsel

Eric is Mimic’s general counsel and oversees all legal matters including intellectual property, licensing, and contracts. Eric joined Mimic in 2017 after leaving private practice and has an extensive background in intellectual property. Prior to joining Mimic, Eric was a founder of Ringer Intellectual Property Law PLLC, a founder and partner of Han, Santos, and Ringer PLLC and worked in law firms specializing in intellectual property in Atlanta, GA, and Seattle, WA.

Eric earned a bachelor’s degree in Physics from University of California, Irvine, doctorate in Physics from Georgia Institute of Technology, and Juris Doctorate (J.D.) from Georgia State University, College of Law.


John Lenihan Jr., MD – Chief Medical Officer

Dr. Lenihan is a nationally recognized minimally invasive gynecologist from Tacoma, WA.  After graduating from the United State Air Force Academy in Colorado Springs, CO, he trained at Baylor College of Medicine in Houston, TX, completed an OB-GYN residency at Madigan Army Medical Center in Washington State, worked as an OB-GYN in the Air Force for the next ten years, and then transferred to the Air Force Reserves where he worked as a flight surgeon and medical commander until 2008. He moved to Tacoma after leaving the active duty Air Force and has spent the last 35 years there specializing in minimally invasive surgery.

He pioneered many procedures in the Northwest including the first operative hysteroscopy, CO2 lasers, laparoscopic hysterectomies and minimally invasive pelvic prolapse repairs. He was the first GYN surgeon in the Northwest to do robotic surgery soon after it was approved by the FDA in March 2005 and is now recognized as an Epicenter Surgeon by Intuitive Surgical for his innovation, teaching, and dedication to advancing minimally invasive surgery for women.

He has authored many scientific papers and book chapters on robotic and laparoscopic surgery. Combining his aviation background with medicine, he was one of the first to recommend utilizing simulation for robotic surgical training and was responsible for developing simulation based standards for credentialing and privileging that have now become the national standard.Dr. Lenihan belongs to many prestigious societies including the AAGL and is a founding member of the Society of Robotic Surgeons. He is also an Associate Clinical Professor in the OB-GYN Department at the University of Washington School of Medicine. When not involved in his professional activities, he enjoys skiing, scuba diving, wine touring, and hanging out with his grandchildren.