Kett Engineering Corporation | 3,861 followers on LinkedIn. Automotive Testing & Staffing Services to support our clients evolving technologies. | Kett Engineering Corporation has been operating for over 60 years and has spent the past 28 years dedicating its services to supporting the automotive testing and staffing needs of our clients. As with Kett, MDE International, Inc. has operated for over 60 years and also built it's reputation as a leading supplier of over the road testing and staffing services to the automotive industry. In 2017, MDE International and MDE Staffing Services became part of the Kett Engineering family.