The ONCE staff is comprised of multi-disciplined experts including inventors, product and application engineers, marketing and creative professionals, sales consultants, business managers, and customer service representatives.
Zdenko Grajcar is an innovative thinker, inventor and businessman in the lighting world who has brought his passion to Agricultural lighting—specifically for improving productivity of plants and animals using light. He holds a Masters Degree in Physics from Comenius University in Bratislava and attributes his vast knowledge base to “Google University”. Zdenko was formerly the Founder & CEO of Lumificient Technologies, a Minnesota company bought by Nexxus Lighting.
Zdenko has forged solid relationships with vendors, customers, and business leaders throughout the globe in order to further agricultural lighting. Zdenko is a “lighting samurai”, as he was labeled by a Chinese sage, and is singularly focused on bringing the science of light to the world of agriculture.
Pete Hentges graduated from the University of St. Thomas in St. Paul, MN, earning Bachelor of Arts degree in Accounting. He has over 20 years of financial management experience in the construction, printing, media and lighting industries. Before joining Once Innovations, Pete was the Chief Financial Officer for Duplication Factory LLC in Chaska, MN.
Josef Hoffmann graduated from Bradley University with a degree in Engineering Physics and earned a Juris Doctor with Honors from Drake Law School.
Josef is a patent attorney with the United States Patent and Trademark Office. Before joining ONCE, Josef was a partner at The Zarley Law Firm in Iowa.
He is a former Officer of the Iowa Intellectual Property Association and keeps watch over the ever-growing ONCE patent portfolio.
Ashlee Glastetter graduated from the University of Missouri with Honors, earning a Bachelor of Arts in English and a Bachelor of Journalism. Ashlee earned a Juris Doctor with Honors from the University of Minnesota Law School. Ashlee works with Joe to keep watch over the ever-growing ONCE Innovations.
David has over 10 years of experience in the lighting industry; leading various teams with extensive offshore manufacturing in the Asian marketplace. He is both a designer and manufacturer and has developed products lines for fluorescent and LED product groups.
David received a Bachelor of Science degree in Electrical Engineering from the Rochester Institute of Technology in New York.
Natarelli is primarily responsible for finding business through new markets.
Aaron holds a Bachelor of Science degree from the University of Wisconsin Milwaukee and a Ph.D. in Biology from Johns Hopkins University. Prior to joining the ONCE team, he worked as a postdoctoral fellow at the University of California San Diego. Drawing on 15 years of research experience in Microbiology, Neuroscience, and Plant Science, Aaron leads genetic research at ONCE in order to develop new and improved technologies that integrate light's influence on physiology and development within crops and livestock.
Tatijana leads research at ONCE in discovering how light influences the performance and welfare of animals. She received her PhD in Animal Science from the University of Kentucky where her work centered on determining the nutritional and management needs of heritage breed chickens compared to commercial broilers and layers. In addition to her extensive research background, Tatijana brings hands on experience of working with livestock to her role.
Ron Demshar received his Bachelor of Arts degree in Business Finance from the University of Wisconsin Eau Claire. Ron is a seasoned sales representative with an extensive background in electronics and electrical products.
Before leading the Agricultural Sales efforts at ONCE, Ron was President of RD-Repping, Inc. for a decade. Ron is also the focal point for ONCE customers focused on egg production.
Contact Ron: firstname.lastname@example.org or 763.607.8780.
Lindsay brings great experience in Agriculture and Sales to our ONCE team.
Contact Lindsay: email@example.com or 763.381.5621.
Brian Babb is a lighting veteran. He worked at Lumificient Technologies, Nexxus Lighting, and started his own LED lighting start-up prior to joining ONCE.
He leads new business development efforts and heads our Swine Segment.
Contact Brian - firstname.lastname@example.org or 763.843.0500.
Mike Roth is our Regional Sales Manager for Iowa and Missouri in the swine market. He comes to Once Innovations with several years experience in the lighting business. Please give Mike a call for all your swine lighting needs!
Contact Mike - email@example.com or 319.461.1177.
David Granger has 23 years experience in the poultry industry. David is a former broiler manager, broiler tech, pullet tech and breeder tech. He understands the lighting demands of the poultry industry and what type of LED lighting will make you a successful producer.
Contact David - firstname.lastname@example.org or 336.927.3061.
Bennie brings great sales experience in the Broilers Market.
Email Bennie at: email@example.com or 763.381.5621.
Tanya has over 5 years of professional marketing experience in a variety of roles and industries. She received her Bachelor of Science degree in Marketing from the University of Wisconsin- River Falls and an M.B.A. from Hamline University.