Kari Helgetun Langfossand work as an assistant professor at the Department of Biotechnology and Food Science at NTNU.
She is responsible for subjects such as Food, processing technology and sustainability (1st grade), practical studies (2nd grade) and Milk and vegetables (3rd grade). At NTNU there is a a long tradition for student internship, where the student can choose from a range of food actors all over the country and even abroad for a 5-month period. The students are closely followed up by their supervisors at the university and in the companies. Kari Helgetun Langfoss also participate in various master's courses. Her subject area is dairy technology and she supervise students who choose this area in their bachelor's or master's thesis.

In addition to her teaching and mentoring of students both at NTNU and Trøndelag University and Vocational College (THYF), she has held courses for apprentices in TINE in connection with their diploma in industrial food production as well as courses for newly established and established local food producers in the production of various dairy products.

Before she started out her academic career she had some years working with quality improvement in Norwegian food industry. This experience and the experience she gained from collaboration with food industry and local food producers in her current job gives her valuable knowledge and experience which are essential in several of her courses.