Vendnet brings together years of experience, diverse perspectives and unique business insights to bring customers the vending services needed to excel in their business. Our team is dedicated to providing quick, reliable services for its customers in order to keep your machines operating at maximum efficiency.

Featured Team Members

Douglas Porter


Doug Porter is the Director of Operations for Vendnet, where he leads technical support and parts within the organization. Additionally, he works closely with the Sales, Marketing, Engineering and Manufacturing departments. 

Prior to Vendnet, he worked at General Motors where he held such roles as Technology Expert, Chevrolet District Manager and Buick/GMC District Manager. In total, he has 5 years of IT experience, 7 years of manufacturing experience and 12 years of management experience.

Ben Hoffman


Ben has been part of Vendet team since 2018.  He is responsible the customer success of our national accounts while overseeing day-to-day operations and project management within Vendnet.

Karen Jacobe


Karen has been with the Wittern Group since 2007. She started her career in Production Control, working closely with our Press, Welding, and Paint departments, directing Manufacturing on demand and inventory control. Karen joined the Vendnet team in 2020. Karen most often works with customers on the phone assisting with part inquiries and orders. 

Karen lives south of the Des Moines Metro on a farm with her husband and son. They have many farm animals, the subject of some fantastic stories. Karen likes sharing fresh produce and eggs with the team. In her free time, she enjoys horseback riding with her husband.

Ted Tufty


Ted Tufty has been in the vending business since 2003, working as a vendor operator for 6 years and joining the Wittern Group in 2009. He is the Project Manager of Vendnet and keeps himself busy by starring in the technical help videos, answering phones, and coordinating the knowledge management of our expansive line of machines. His many roles include partnering with Sales, Manufacturing, and the Quality division. Ted has an extensive background in IT, including a Master’s of IT Project Management and multiple Bachelor’s degrees related to IT. His 10 years of IT experience to guide his leadership of the Greenlite Card Reader system.