Meet the Team

When you work with Rotunda Scientific Technologies, you get more than just a product or service. You get a team dedicated to meeting your needs. 

Joe Rotunda


Joe Rotunda is a Partner for the company and guides the technical aspects of the business. Currently, he is focused on dosimetry, neutron detection, ESR, OSL and TLD technology and systems. In addition, he provides personal dosimetry training on the Harshaw TLD product line and the Bruker benchtop ESR5000.

Joe lives in San Diego, California, and operates the local office. When not working, you will find him spending time with his wife Lisa, their kids, or sailing out in the San Diego Bay. 

Lisa Fiocca


Lisa is a quiet but active business partner. She is a serial entrepreneur with previous on-line and store front businesses, which contributes to the success of this woman-owned company.

Lisa lives in San Diego, California, and assists Joe at the local office there. She enjoys going for walks around San Diego, meeting new people and discovering new places.

Alexandra Hoffmann

Sales and Marketing

Alexandra (Alex) Hoffmann is the Sales and Marketing Manager for the ED3, LEDµSF and PSLfood. She also works on the Health and Medical Physics product lines and organizes conferences and trade shows.

Alex is an Ohio native who earned her bachelor's degree in hospitality management from Kent State University. After graduating, she relocated to San Diego, California, where she has lived for the past ten years. Outside of work, Alex enjoys spending time with her husband Mathieu, cooking, and going on adventures with their dog Whiskey.

Ivan Wortman

Sales and Marketing

Ivan Wortman is the Sales and Marketing Manager for the Industrial and Energy product line. He also oversees the company's special projects, quality system, and business automations.

Originally from Pennsylvania, Ivan relocated to Ohio to study at Ashland University while playing baseball. He found his way to Rotunda Scientific Technologies in 2018 and has been here ever since. Outside of work, Ivan enjoys spending time with his wife, Hannah, and their dog, Winnie. Hobbies include: 3D printing, cooking, and woodworking.

Britton Holmes

Service Engineer

Britton is our lead service engineer providing quality field and bench service for our equipment offerings. In addition to providing great care and service to our customers, he brings over 24 years of experience in field service and electromechanical repair.

Britton was born and raised in Cincinnati, where he also spent 16 years as a part-time firefighter and EMT. Outside of work, you can find him fishing, motorcycling, and building electronic gadgets.

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