Skip to main content


Michael E. Lubbehusen, P.E.

Mechanical Engineer, Principal

Mike is a graduate of Purdue University with a degree in mechanical engineering. Prior to forming Primary Engineering, Inc., Mike served as a Principal with a mid-sized engineering firm in Indiana and is currently a registered professional engineer in Indiana, Michigan, Illinois, Ohio, Pennsylvania, Maryland, Wisconsin, Kansas, Kentucky, Texas, South Carolina, Iowa, and West Virginia. While working as a mechanical engineer, Mike has designed many facilities that include corrections, educational, commercial and retail spaces. In addition to his engineering duties, Mike volunteers as the board president for YMCA Camp Potawotami each year and volunteers with the NCEES Mechanical PE Test Committee. He currently lives in Fort Wayne, Indiana with his wife, daughter, and son.

Brian C. Johnson

Electrical Engineer, Principal

Brian is a graduate of Purdue University with a degree in electrical engineering. He spent many years working in manufacturing as a design engineer and in plant management before entering the consulting engineering field. Brian spent several years with another consulting engineering firm prior to forming Primary Engineering, Inc. He has a distinguished career designing several projects that are located in many areas across the eastern United States that include commercial offices, correctional facilities, schools and universities, retail spaces and medical offices. Brian is certified in QS9001 quality control measures. He currently lives in Carmel, Indiana with his wife and daughter.

Robert Altman

Electrical Engineer, Principal

Robert has been in the design and construction field since 1995 and designing electrical systems since 2001. His experience includes many K-12 schools, universities, healthcare, commercial, and correctional facilities projects. He is a certified lighting designer and specializes in lighting controls and power distribution. In 2024, Robert became a partner at Primary Engineering.

Cullan Magnuson

Mechanical Engineer, Principal

In 2011, Cullan began his engineering career at Primary Engineering through a high school internship program. He then moved to a part-time role while simultaneously earning his Bachelor of Science degree in Mechanical Engineering Technology from Purdue University in 2017. As he continues to gain experience in the field, he also enjoys working with clients and design teams to develop the best and most cost-efficient systems possible and seeing the final product in operation. In 2024, Cullan became a partner at Primary Engineering.

About Us

Our team is comprised of some of the most talented minds in the fields of mechanical, plumbing and electrical engineering. It's this unique mix of talents that enables us to design robust systems that are energy efficient, reliable, and easy to maintain. We do a lot of things and we do them well.