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Our ApproachSerious professionals know that proper training on the equipment and in the application area is key to long-term success and the avoidance of costly claims.
Our professional trainers provide exceptional instruction because you deserve the best.
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Our FacilitiesWith more than 465 sq. m (5,000 sq. ft.) of dedicated training space at our HQ, and a training location in Nevada, our trainers hold more than 100+ classes a year. Our HQ facilities include two classrooms, a specialized concrete forms room, and a first-in-the-industry 70.6 sq. m (760 sq. ft.) indoor utility pit.
We bring real-world conditions into a safe learning environment.
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Our ClassesGSSI training courses are organized into two tiers: Intro and Advanced. Intro classes assume no prior knowledge of GPR or EM technology. Advanced classes assume prior attendance of an intro class or working experience with the technology. Advanced classes are typically for users who want to branch out into areas beyond basic applications.
GSSI provides the most training classes in the world.
GPR Soil Suitability Map-
Jonathan Brinkmann -
Jon Algeo -
Rob Sommerfeldt -
Robert Parrillo -
David Bisseri
Jonathan joined GSSI in 2014 as a Technical Trainer. Jonathan has worked with GPR and other geophysical tools since 2002 and has worked on sites all over North America. Jonathan received his BS in Geology from Salem State University and attended graduate school at Wright State University. Jonathan lives a stone’s throw from the city limits of Boston with his wife, young son, and two rescue cats from the British Virgin Islands: Nigel and Nellie.
Jon joined GSSI in 2023 as a Technical Trainer. He was introduced to near-surface geophysics while working toward his B.S. in Geology at Bucknell University. He earned a PhD in Environmental Science from Rutgers University-Newark, focusing his research on expanding the functionality of GPR in clay soils. Since then, Jon has worked as a utility locator and concrete scanner, and as a geophysical consultant. Jon enjoys tabletop gaming and bonsai, and has two cats, Zoe and Oolong, who love to get in the way of both.
Rob Sommerfeldt joined GSSI in 2007, beginning his career in training and customer support before transitioning into sales within the infrastructure industry.
After retiring from GSSI in 2022, Rob found he couldn’t stay away for long. In 2025, he returned to the company as a contractor to focus on educating professionals across the United States and Canada on GPR technology.
Robert began his career with GSSI in 2003, and his experience includes over 30 years’ in non-destructive testing using industrial robotics, coordinate measuring machines, machine vision, and ground penetrating radar. He holds a bachelor’s degree in electrical engineering and has authored several technical papers on the application and use of ground penetrating radar.
Robert retired from GSSI in 2022 as International Sales Manager and continues to enjoy his relationship with GSSI as a certified trainer.
David joined GSSI in 2025 as a workshop trainer after 35 years working as a field geophysicist in the private sector. David has worked with GPR and other geophysical methods to characterize the shallow subsurface in the environmental, civil engineering, and archeological fields. His field study areas included most of the lower 48 States, Hawaii, Alaska, and the Marianas Islands. David received a BS degree in Applied Geophysics From UCLA. He currently resides In Sonoma County California, about 1 ½ hours north of San Francisco with his wife.
The GSSI Product Team is available to answer product-related questions, free of charge. Please provide as much detail as possible using the form below for the most effective and efficient response.
If you prefer, call 1-603-864-0848.