Talented Team

Dave Tostenson - President

Dave Tostenson has been engineering and developing products for thirty years. After graduating with a BSME from the University of California, Davis in 1984, he took a job with Hewlett-Packard where he was mentored by very seasoned and professional engineers. It was here that he solidified his passion for engineering and doing things right the first time.

After spending thirteen years at HP, Dave started and managed an engineering organization at a San Francisco Bay Area contract manufacturer and then became a managing partner at GVO, a Palo Alto product development consulting firm. During this time, Dave honed his skills in putting a skilled engineering team together and running a business.

In 2001, Dave started DT Engineering Associates, Inc., with the goal of applying sound engineering principals across a broad spectrum of industries.

In his spare time, Dave enjoys flying, piloting boats, and tinkering with just about anything that has nuts and bolts. He enjoys taking things apart, figuring out how to make them better, and then reassembling to create a product that is better than what he started with.

Tim Burkhard - Mechanical Engineer

Tim is a mechanical engineer, holding his BS in Mechanical Engineering from California State University, Sacramento. He started working at DT Engineering as an intern in 2005. Since then, he has learned that being attentive to detail is critical to the success of product development. When he is not solving engineering conundrums, Tim enjoys playing mandolin and banjo, being outdoors, and working on his cars.

Graham Maxwell, P.E. - Mechanical Engineer

Graham began working at DT Engineering in 2013. He appreciates the level of excellence that DT Engineering maintains and enjoys the diversity of projects that he gets to be a part of. Graham holds a BS in mechanical engineering from California state University, Chico and an MS in mechanical engineering from Colorado State University. He is also a lisenced professional engineer in California. Graham enjoys hunting, fishing, and other outdoor pursuits. He believes that you should never leave the house without a watch and a good sharp knife.

Graham Maxwell

Zach Rath - Mechanical Engineer

Zach is a graduate of California State University Chico, holding a BS in Mechanical Engineering. He loves learning new things and enjoys the challenges associated with it. After work and on the weekends, Zach enjoys all kinds of sports, from basketball to cycling.

Zach Rath

Angelo Magliola - Mechanical Engineer

Angelo is a graduate of University of California, Davis in Mechanical Engineering, and began working at DT Engineering in 2016. After working in a research lab focused on composite materials manufacturing, he appreciates the variety of projects in which DTE engages. In his spare time, Angelo enjoys mountain biking, hiking, and running, as well as working on and enthusiastically driving his car.

Brett Touey - Mechanical Engineer

Brett graduated from CSU, Sacramento with his BS degree in Mechanical Engineering. He has a background in military ground-based vehicle design, build, and testing. Additionally, he has extensive training in the aerospace industry, specifically pump-fed rocket engine design. During his free time, Brett enjoys hunting, spending time with his family, and working on his vehicles and house.

Austin Collier - Industrial Designer

Austin is an Industrial Designer with a Bachelor of Science in Industrial Design, with a focus in Product Design from San Francisco State University. Austin resides in the Sacramento region and has been part of the creative community for many years now. He has worked at award winning design studios across the Sacramento area contributing his love for design. Austin is a full spectrum designer; working with state of the art tools, he has experience in creating turnkey products, high level concepts, research and development, design development, rapid prototyping, 3D modeling, fabrication, high-end rendering, and DFM documentation. He also has a background in housewares, where he has helped developed clocks, high-end translucent porcelain lighting, mobiles, and sculptural installations. He also has a passion for photography, snowboarding, and cooking.

Katherine Tostenson - Project Manager

Katherine graduated from California State University, Chico with her Bachelor's Degree in Organizational Communication Studies. She began her career in the San Francisco Bay Area's Silicon Valley, working for a high tech manufacturing company. She has now joined DT Engineering as both the Project Manager and Marketing Manager. Katherine has mastered the skills of multi-tasking, thinking on her feet, and adapting to change. She loves swimming, hiking, studying nutrition, and writing.

Scott Anixter - Business Development

Scott is a graduate from California State University, East Bay with a degree in Communications. He started working at DT Engineering in 2016 and specializes in Business Development to help DT Engineering grow and thrive. Scott was born and raised in the Bay Area, lived in the LA Area for a few years, and now resides in the beautiful city of Sacramento. He enjoys camping, driving, learning about anything, trying new things, and quoting movies.

Nancy Tostenson - Co-Owner and Technical Associate

Co-owner and Technical Associate at DT Engineering, Nancy earned her Bachelor of Science degree at UC Davis, School of Agriculture and Environmental Science. She works to fill several needs at the office, serving both in an Administrative capacity and contributing to projects where her education and experience are appropriate. Activities she enjoys include traveling, raising organic produce, homemaking, and hiking. For relaxation she likes reading history & biographies and visiting with family and friends.

Nancy Tostenson
What We Are

DT Engineering Associates is an engineering consulting firm that focuses on product and equipment development. We have over thirty years of product development experience in the areas of mechanical engineering, electrical engineering, and industrial design. We take pride in our ability to solve difficult engineering and design problems, getting it right the first time.


DT Engineering Associates, Inc.
920 Reserve Dr. Suite 190
Roseville, California 95678
Office - 916.474.5167
Fax - 916.749.3793


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